[[!meta copyright="Copyright © 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014 Free Software Foundation, Inc."]] [[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable id="license" text="Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled [[GNU Free Documentation License|/fdl]]."]]"""]] [[!tag open_issue_gcc]] Here's what's to be done for maintaining GCC. Apart from the target-specific configuration machinery, there shouldn't be any major differences within GCC between the GNU/Hurd and GNU/Linux ports, for example. Especially all the compiler magic is all the same. [[!toc levels=2]] # [[General information|/gcc]] # [[Sources|source_repositories/gcc]] # Configuration Last reviewed up to the [[Git mirror's d3faa4b6d102b09a5ea17bbf81590f215b42fbc4 (2014-09-26) sources|source_repositories/gcc]]. has documentation for the `configure` switches. * Configure fragments that have `*linux*` cases might/should often contain those for us (and GNU/k*BSD) as well. * `configure.ac` * `libstdc++-v3` * `configure.host` `abi_baseline_pair` etc. setting. `config/abi/post/*-linux-gnu`. TODO. * `config/os/gnu-linux` Is used for all GNU systems, as per `configure.host`. Should rename to `gnu-user` to reflect this? TODO. * `gcc/acinclude.m4`:`gcc_GAS_FLAGS`: always pass `--32` to assembler for x86 Linux. Probably we should just do the same, see `*-*-linux*` comment in [[!message-id "87zjrjcasc.fsf@schwinge.name"]]. * `lib-prefix.m4` (present twice in GCC sources) contains one remaining `linux`-only case. * `libjava` TODO: classpath/include/jni_md-x86-linux-gnu.h See below (`log_build`). Makefile.am:## _GNU_SOURCE defined for some Linux builds. It doesn't hurt to Makefile.am:## always define it. Some systems, including Linux, need Makefile.am:# certain linuxthread functions get linked: Makefile.am:## This is specific to Linux/{Free,Net,Open}BSD/Hurd and perhaps few others. Makefile.am: $(mkinstalldirs) $(DESTDIR)$(SDK_INCLUDE_DIR)/linux; \ Makefile.am: $(DESTDIR)$(SDK_INCLUDE_DIR)/linux); \ Makefile.am: $(DESTDIR)$(SDK_INCLUDE_DIR)/linux/$$headername.h; \ classpath/NEWS: the epoll notification mechanism on Linux 2.6. classpath/config.rpath: linux* | k*bsd*-gnu) classpath/config.rpath: gnu* | linux* | k*bsd*-gnu) classpath/config.rpath: linux*oldld* | linux*aout* | linux*coff*) classpath/config.rpath: linux* | k*bsd*-gnu) classpath/configure.ac: *linux*) classpath/configure.ac: target_os=linux-gnu classpath/configure.ac: AC_MSG_WARN(no, using x86-linux-gnu) classpath/doc/cp-vmintegration.texinfo:has been primarily tested against Linux and lacks garbage collections, a classpath/doc/cp-vmintegration.texinfo:Linux and Windows 2000. As of June, 2004, it does not appear that ORP classpath/doc/cp-vmintegration.texinfo:This is a free Java Virtual Machine that is being developed on GNU/Linux classpath/doc/cp-vmintegration.texinfo:Runs on the x86 and PowerPC architectures, on the AIX, Linux, and Mac classpath/gnu/classpath/SystemProperties.java: && "Linux".equals(defaultProperties.get("os.name"))) classpath/gnu/java/nio/EpollSelectorImpl.java: * notification mechanism on GNU/Linux. classpath/java/io/File.java: * Implementation note: Unlike the RI, on Linux and UNIX classpath/java/net/MimeTypeMapper.java: // On Linux this usually means /etc/mime.types. classpath/ltcf-cxx.sh: linux*) classpath/ltcf-cxx.sh: linux*) classpath/ltconfig:# Transform linux* to *-*-linux-gnu*, to support old configure scripts. classpath/ltconfig:linux-gnu*) ;; classpath/ltconfig:linux*) host=`echo $host | sed 's/^\(.*-.*-linux\)\(.*\)$/\1-gnu\2/'` classpath/ltconfig: version_type=linux classpath/ltconfig: version_type=linux classpath/ltconfig: version_type=linux classpath/ltconfig: version_type=linux classpath/ltconfig: version_type=linux classpath/ltconfig: version_type=linux classpath/ltconfig:# No shared lib support for Linux oldld, aout, or coff. classpath/ltconfig:linux-gnuoldld* | linux-gnuaout* | linux-gnucoff*) classpath/ltconfig:# This must be Linux ELF. classpath/ltconfig:linux-gnu*) classpath/ltconfig: version_type=linux classpath/ltconfig: # powerpc, because MkLinux only supported shared libraries with the classpath/ltconfig: # most powerpc-linux boxes support dynamic linking these days and classpath/ltconfig: # assume the GNU/Linux dynamic linker is in use. classpath/ltconfig: dynamic_linker='GNU/Linux ld.so' classpath/ltconfig: version_type=linux classpath/ltconfig: version_type=linux classpath/ltconfig: version_type=linux classpath/ltconfig: version_type=linux classpath/ltconfig: dynamic_linker='GNU/Linux ld.so' classpath/ltconfig: version_type=linux classpath/ltconfig: version_type=linux classpath/ltconfig: version_type=linux classpath/ltmain.sh:# compiler flags: $LTCFLAGS classpath/ltmain.sh: *-*-linux*) classpath/ltmain.sh: darwin|linux|osf|windows|none) classpath/ltmain.sh: # Like Linux, but with the current version available in classpath/ltmain.sh: linux) classpath/m4/lib-link.m4: dnl 2. if it's /usr/local/include and we are using GCC on Linux, classpath/m4/lib-link.m4: linux* | gnu* | k*bsd*-gnu) haveit=yes;; classpath/m4/lib-link.m4: dnl 2. if it's /usr/local/lib and we are using GCC on Linux, classpath/m4/lib-link.m4: linux* | gnu* | k*bsd*-gnu) haveit=yes;; classpath/m4/lib-prefix.m4: dnl 3. if it's /usr/local/include and we are using GCC on Linux, classpath/m4/lib-prefix.m4: linux* | gnu* | k*bsd*-gnu) haveit=yes;; classpath/m4/lib-prefix.m4: CPPFLAGS="${CPPFLAGS}${CPPFLAGS:+ }-I$additional_includedir" classpath/m4/lib-prefix.m4: dnl 3. if it's /usr/local/lib and we are using GCC on Linux, classpath/m4/lib-prefix.m4: linux*) haveit=yes;; classpath/m4/lib-prefix.m4: LDFLAGS="${LDFLAGS}${LDFLAGS:+ }-L$additional_libdir" classpath/m4/lib-prefix.m4: dnl On glibc systems, the current practice is that on a system supporting classpath/native/jni/java-net/javanet.c: /* Not writable on Linux */ classpath/native/jni/java-nio/gnu_java_nio_VMChannel.c: * vector based read call (currently readv on Linux). classpath/native/jni/java-nio/gnu_java_nio_VMChannel.c: * vector based read call (currently readv on Linux). classpath/vm/reference/java/lang/VMProcess.java: // Linux use a process-per-thread model, which means the same thread configure.ac: *-*-linux*) configure.ac: AC_DEFINE(LINUX_THREADS, 1, [Define if using POSIX threads on Linux.]) include/config.h.in:/* Define if using POSIX threads on Linux. */ include/config.h.in:#undef LINUX_THREADS include/posix-threads.h:# ifdef LOCK_DEBUG /* Assumes Linuxthreads */ include/posix-threads.h:#ifndef LINUX_THREADS include/posix-threads.h:// pthread_mutex_destroy does nothing on Linux and it is a win to avoid include/posix-threads.h:#endif /* LINUX_THREADS */ include/posix-threads.h: // For linux_threads this is really a pointer to its thread data include/posix-threads.h:// E.g. on X86 Linux, pthread_self() is too slow for our purpose. include/posix-threads.h:// This code should probably go away when Linux/X86 starts using a posix-threads.cc:#if defined(LINUX_THREADS) || defined(FREEBSD_THREADS) posix-threads.cc: // LinuxThreads (prior to glibc 2.1) usurps both SIGUSR1 and SIGUSR2. posix-threads.cc:#else /* LINUX_THREADS */ posix-threads.cc:#endif /* LINUX_THREADS */ posix-threads.cc: // In older glibc's (prior to 2.1.3), the cond_wait functions may posix-threads.cc: // glibc 2.1.3 doesn't set the value of `thread' until after start_routine configure.ac: # We can save a little space at runtime if the mutex has m_count configure.ac: # or __m_count. This is a nice hack for Linux. configure.ac: AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[ configure.ac: extern pthread_mutex_t *mutex; int q = mutex->m_count; Makes sense to implement in our [[/libpthread]] ([[!taglink open_issue_libpthread]])? configure.ac: i?86-*-linux*) configure.ac: SIGNAL_HANDLER=include/i386-signal.h configure.ac: SIGNAL_HANDLER_AUX=include/x86_64-signal.h include/i386-signal.h:// on an i386 based Linux system. include/i386-signal.h: directly rather than via glibc. The sigaction structure that the include/i386-signal.h: * called _directly_ by the kernel, because linuxthreads wraps signal include/i386-signal.h: * handler to a linuxthreads wrapper, we will lose the PC adjustment include/i386-signal.h: * Also, there may not be any unwind info in the linuxthreads configure.ac: *-linux*) configure.ac: host_os=linux;; configure.host: i[34567]86*-linux* | \ configure.host: can_unwind_signal=yes configure.host: libgcj_ld_symbolic='-Wl,-Bsymbolic' configure.host: if test x$slow_pthread_self = xyes \ configure.host: [...] configure.host: i[34567]86*-kfreebsd*-gnu | x86_64*-kfreebsd*-gnu) configure.host: libgcj_ld_symbolic='-Wl,-Bsymbolic' configure.host: slow_pthread_self= java/lang/natObject.cc:// What follows currenly assumes a Linux-like platform. java/lang/natObject.cc:// Some of it specifically assumes X86 or IA64 Linux, though that java/lang/natObject.cc:# define INVALID_THREAD_ID 0 // Works for Linux? java/lang/natObject.cc: const unsigned MIN_SLEEP_USECS = 2001; // Shorter times spin under Linux. java/lang/natVMClassLoader.cc: // a module named (eg, on Linux) `lib-gnu-pkg-quux.so', followed libltdl/acinclude.m4:x86_64-*linux*|ppc*-*linux*|powerpc*-*linux*|s390*-*linux*|sparc*-*linux*) libltdl/acinclude.m4: x86_64-*linux*) libltdl/acinclude.m4: ppc64-*linux*|powerpc64-*linux*) libltdl/acinclude.m4: LD="${LD-ld} -m elf32ppclinux" libltdl/acinclude.m4: s390x-*linux*) libltdl/acinclude.m4: sparc64-*linux*) libltdl/acinclude.m4: x86_64-*linux*) libltdl/acinclude.m4: ppc*-*linux*|powerpc*-*linux*) libltdl/acinclude.m4: s390*-*linux*) libltdl/acinclude.m4: sparc*-*linux*) libltdl/acinclude.m4: # Under GNU Hurd, this test is not required because there is libltdl/acinclude.m4: version_type=linux libltdl/acinclude.m4: version_type=linux libltdl/acinclude.m4: version_type=linux libltdl/acinclude.m4: version_type=linux libltdl/acinclude.m4: version_type=linux libltdl/acinclude.m4: version_type=linux libltdl/acinclude.m4: version_type=linux libltdl/acinclude.m4:# No shared lib support for Linux oldld, aout, or coff. libltdl/acinclude.m4:linux*oldld* | linux*aout* | linux*coff*) libltdl/acinclude.m4:# This must be Linux ELF. libltdl/acinclude.m4:linux*) libltdl/acinclude.m4: version_type=linux libltdl/acinclude.m4: # powerpc, because MkLinux only supported shared libraries with the libltdl/acinclude.m4: # most powerpc-linux boxes support dynamic linking these days and libltdl/acinclude.m4: # assume the GNU/Linux dynamic linker is in use. libltdl/acinclude.m4: dynamic_linker='GNU/Linux ld.so' libltdl/acinclude.m4: version_type=linux libltdl/acinclude.m4: version_type=linux libltdl/acinclude.m4: version_type=linux libltdl/acinclude.m4: version_type=linux libltdl/acinclude.m4: version_type=linux libltdl/acinclude.m4: version_type=linux libltdl/acinclude.m4: version_type=linux libltdl/acinclude.m4:# This must be Linux ELF. libltdl/acinclude.m4:linux*) libltdl/acinclude.m4: linux*) libltdl/acinclude.m4:linux*) libltdl/acinclude.m4: linux*) libltdl/acinclude.m4: # Linux and Compaq Tru64 Unix objects are PIC. libltdl/acinclude.m4: # Linux and Compaq Tru64 Unix objects are PIC. libltdl/acinclude.m4: linux*) libltdl/acinclude.m4: linux*) libltdl/acinclude.m4: gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu) libltdl/acinclude.m4: # GNU and its variants, using gnu ld.so (Glibc) libltdl/ltmain.sh: darwin|linux|osf|windows) libltdl/ltmain.sh: # Like Linux, but with the current version available in libltdl/ltmain.sh: linux) shlibpath.m4: version_type=linux shlibpath.m4: version_type=linux shlibpath.m4: version_type=linux shlibpath.m4: version_type=linux shlibpath.m4: version_type=linux shlibpath.m4: version_type=linux shlibpath.m4:# No shared lib support for Linux oldld, aout, or coff. shlibpath.m4:linux*oldld* | linux*aout* | linux*coff*) shlibpath.m4:# This must be Linux ELF. shlibpath.m4:linux*|k*bsd*-gnu) shlibpath.m4: version_type=linux shlibpath.m4: # powerpc, because MkLinux only supported shared libraries with the shlibpath.m4: # most powerpc-linux boxes support dynamic linking these days and shlibpath.m4: # assume the GNU/Linux dynamic linker is in use. shlibpath.m4: dynamic_linker='GNU/Linux ld.so' shlibpath.m4: version_type=linux shlibpath.m4: version_type=linux shlibpath.m4: version_type=linux shlibpath.m4: version_type=linux shlibpath.m4: version_type=linux shlibpath.m4: version_type=linux testsuite/lib/libjava.exp: if { [regexp "linux" $target_triplet] } { Adds `-specs=libgcj-test.spec`, which is created by `configure`. *This spec file is read by gcj when linking. It is only used by the testing harnesses (in libjava and gdb).* TODO. [[!taglink open_issue_gdb]]. * `libgcc` * `config/t-linux` * `config/i386/t-linux` TODO, rename to `t-gnu-user`. * `config/i386/linux-unwind.h` TODO, probably needs porting, if we need this. [[!GCC_PR 57851 desc="[patch] unwinding via signal trampoline for kfreebsd*-gnu"]]. * `libitm` TODO: * `libitm/config/linux` * `hurd/usr` `NATIVE_SYSTEM_HEADER_DIR`, `638454a19c1c08f01c10517bc72a114250fc4f33`, [[!message-id "mcrzkhcbftp.fsf@coign.corp.google.com"]]. Debian. * Eventually: get rid of this special-casing. [[!message-id "gckk1s$e0b$1@ger.gmane.org"]]. * [`-fsplit-stack`](http://nickclifton.livejournal.com/6889.html) #define TARGET_CAN_SPLIT_STACK #define TARGET_THREAD_SPLIT_STACK_OFFSET 0x30 libgcc/config/i386/morestack.S libgcc/config/i386/t-stack-i386 libgcc/config/t-stack libgcc/generic-morestack-thread.c libgcc/generic-morestack.c libgcc/generic-morestack.h libgcc/config/i386/morestack.S: cmpl %gs:0x30,%eax # See if we have enough space. libgcc/config/i386/morestack.S: # gcc/config/i386/linux.h. libgcc/config/i386/morestack.S: movl %eax,%gs:0x30 # Save the new stack boundary. libgcc/config/i386/morestack.S: movl %eax,%gs:0x30 # Save the new stack boundary. libgcc/config/i386/morestack.S: movl %ecx,%gs:0x30 # Save new stack boundary. libgcc/config/i386/morestack.S: # gcc/config/i386/linux64.h. libgcc/config/i386/morestack.S: movl %eax,%gs:0x30 libgcc/config/i386/morestack.S: movl %gs:0x30,%eax libgcc/config/i386/morestack.S: movl %eax,%gs:0x30 libgcc/generic-morestack-thread.c: can build glibc. */ libgcc/generic-morestack-thread.c: not be necessary if glibc supports -fsplit-stack directly. */ libgcc/generic-morestack.c: can build glibc. */ libgcc/generic-morestack.c: since stack splitting only works on GNU/Linux anyhow. */ libgcc/generic-morestack.c:#if defined(__GLIBC__) && defined(__linux__) libgcc/generic-morestack.c: /* In glibc, the first two real time signals are used by the NPTL IRC, freenode, #hurd, 2014-01-10: Hi, I assume gcc -fsplit-stack is not yet supported? gnu_srs1: https://lists.gnu.org/archive/html/bug-hurd/2013-06/msg00100.html braunr: That's exactly where the problem is: src/libgcc/generic-morestack.c:814:__morestack_load_mmap no return value recorded creating a call: page = mmap ((void*)0x0, 0, 4, 2, -1, 0);, returning EINVAL lenght of 0 ? yes, __morestack_current_segment, is zero mmap is expected to return einval if the requested mapping has a size of 0 .. i don't know what split stack is, but i remember it's a problem for the hurd sorry, the address is zero from the above, and the length in the call is zero too yes that's what i understood and i'm telling you it's normal the size is invalid libgcc/generic-morestack.c: mmap (__morestack_current_segment, 0, PROT_READ, MAP_ANONYMOUS, -1, 0); well this is wrong and the error code stays, not being reset in subsequent calls causing an error later on as roland says in https://lists.gnu.org/archive/html/bug-hurd/2013-06/msg00102.html, it should be possible to support split-stack now that we have tls as thomas reported i don't see the relation between split-stack and the mmap invocation tls s in 2.17-97, right? that's the one I tried tls is there, but not split stack support and libpthread still has bugs related to changing the stack apparently fixed upstream but not yet in debian packages unless you want to try with the thread destruction packages not sure it will change much though * Also see `libgcc/config/i386/morestack.S`: comments w.r.t `TARGET_THREAD_SPLIT_STACK_OFFSET`/`%gs:0x30` usage; likely needs porting. * As per `libgcc/config/i386/t-stack-i386`, the former file is only used for `-fsplit-stack` support -- which is currently enabled for us in `libgcc/config.host`. * `gcc/config/gnu-user.h` defines `*SPLIT_STACK*` macros -- which aren't valid for us (yet), I think. * Also see [[!sourceware_PR 10686]], glibc commit ecbf434213c0333d81706074e4d107ac45011635 `Reserve new TLS field for x86 and x86_64` (`__private_ss`). * Might `-fsplit-stack` be useful for us with respect to our [[multithreaded|multithreading]] libraries? * `gcc/ada` (not all reviewed) * [[Ada (GNAT)|GNAT]] support is work in progress. * `gcc/go`, `gcc/testsuite/go.test`, `libgo` (not reviewed) * The [[Google Go's libgo|gccgo]] (introduced in e440a3286bc89368b8d3a8fd6accd47191790bf2 (2010-12-03)) needs OS configuration / support. * `--enable-frame-pointer` `gcc/configure.ac`: `enable_frame_pointer=no` * `--with-dwarf2`? * `--enable-werror` * `--enable-checking` * `--enable-linker-build-id` * `--enable-gnu-unique-object` * `--enable-lto` * `--enable-indirect-function` [[IFUNC]] * , * `gcc/config/t-linux` should be named `gcc/config/t-gnu-user` or similar. Likewise for `gcc/config/i386/t-linux`. * Debian's GCC package has Hurd-specific patches. Some have been forwarded upstream (and have been ignored). [[Thomas_Schwinge|tschwinge]] is working on getting them integrated. * [\[meta-bug\] bootstrap bugs for \*-gnu\*](http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21824) * [build system: gcc\_cv\_libc\_provides\_ssp and NATIVE\_SYSTEM\_HEADER\_DIR](http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html) * [-fstack-protector shouldn't use TLS in freestanding mode](http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29838) * See also commit bf1c0af128f33bd342636c4afeaa8f3a8a7cf8ca (reverted in commit a204f0622242865ffea889bd698bc7c7bd236bd1), commit 05c1aa95e6c37b3b281d749c76c673392941a031. * 34618b3190c110b8926cc2b1db4b4eac95451995 »config-list.mk« What's this used for? (Check ML.) Ask to include i686-pc-gnu (once it is buildable out of the box)? See also 73905b5de0d9a086f22ded7638bb1c0ae1b91326. * [low] [[toolchain/cross-gnu]] toolchain bootstrap vs. `fenv.h` in libgcc's libbid: [...]/xgcc [...] -DIN_LIBGCC2 -fbuilding-libgcc [...] -Dinhibit_libc [...] -o bid_decimal_globals.o [...] -c [...]/libgcc/config/libbid/bid_decimal_globals.c [...]/libgcc/config/libbid/bid_decimal_globals.c:47:18: fatal error: fenv.h: No such file or directory compilation terminated. make[1]: *** [bid_decimal_globals.o] Error 1 make[1]: Leaving directory `/media/boole-data/thomas/tmp/gnu-0/src/gcc.obj/i686-pc-gnu/libgcc' make: *** [all-target-libgcc] Error 2 See threads at [[!message-id "AANLkTinY1Cd4_qO_9euYJN8zev4hdr7_ANpjNG+yGRMn@mail.gmail.com"]], [[!message-id "20110328225532.GE5293@synopsys.com"]], [[!message-id "4D52D522.1040804@gmail.com"]]. Can simply configure the first GCC with `--disable-decimal-float`. Alternatively, can we use `#ifndef inhibit_libc` for this (these?) file(s)? See `generic-nonstrack.c`, for example. The latter (and also `generic-morestack-thread.c`) also has a nice explanation of `inhibit_libc` which could be centralized at one place, for example definition of `inhibit_libc`. * [low] [[toolchain/cross-gnu]] The directory that should contain system headers does not exist: /media/boole-data/thomas/tmp/gnu-0/sys_root/usr/include make[2]: *** [stmp-fixinc] Error 1 make[2]: Leaving directory `/media/boole-data/thomas/tmp/gnu-0/src/gcc.obj/gcc' make[1]: *** [all-gcc] Error 2 make[1]: Leaving directory `/media/boole-data/thomas/tmp/gnu-0/src/gcc.obj' `mkdir` the directory for now, but what is really going on? GCC has *use `/usr/include` patch*, but glibc still installs into `/include/`? * `__GLIBC__` IRC, freenode, #hurd, 2012-01-05: on GNU/kFreeBSD, it's GCC that defines __GLIBC__, funny ?? not from features.h ? in gcc/config/kfreebsd-gnu.h :-) correct, it's enabled in gcc's config i discovered that after banging my head on the wall trying to find out why some stuff wasn't compiling even after kfreebsd porting patches adding preprocessors checks for __GLIBC__ GNU/kFreeBSD and GNU/kNetBSD: commit 6396cc37141180db4d2c8f73cab4f5977d8a1e19 (2004-06-24, r83577), GNU/kOpenSolaris: commit 3bef40126fb1633018fce47828df0fa9f65f110c (2009-01-29, r143768). See also GDB commits fda1b24c62843f81d31de2af57b1ed9c55f1e348 and 1acb4f4ff73d20850a7524fc939d2651be75f47b, and binutils commits e3081899be7570eb90ccfd5d767950d3a62871ee, 127c4d4a4fe65bd17ea64db1be7f3c93d393afcb, 47dbf5b634b955c2db1221715d15751e1281546a, and ad2be7e8b846f4cd67fa1e032f98d5dc1cdb6b8d. IRC, freenode, #hurd, 2012-05-25: Hi, looks like __GLIBC__ is not defined by default for GNU? touch foo.h; cpp -dM foo.h|grep LIBC: empty gnu_srs: well, this only tells your the compiler defaults gnu_srs: See the email I just sent. [[!message-id "87396od3ej.fsf@schwinge.name"]] __GLIBC__ would probably be introduced by a glibc header tschwinge: I saw your email. I wonder if features.h is included in the kFreeBSD build of webkit. It is defined in their build, but not in the Hurd build. gcc on kfreebsd unconditionally defines __GLIBC__ (a bit stupid choice imho, but hardly something that could be changed now...) :/ personally i don't consider this only "a bit" stupid, as kfreebsd is one of the various efforts pushing towards portability and using such hacks actually hinders portability ... yeah don't tell me, i can remember at least half dozen of occasions when a code wouldn't have been compiling at all on other glibc platforms otherwise sure, i have nothing against kfreebsd's efforts, but making gcc define something which is proper of the libc used is stupid it is i spotted changes like: -#ifdef __linux +#if defined(__linux__) || defined(__GLIBC__) and wondered why they wouldn't work at all for us... and then realized there were no #include in that file before that preprocessor check This is even in upstream GCC gcc/config/kfreebsd-gnu.h: #define GNU_USER_TARGET_OS_CPP_BUILTINS() \ do \ { \ builtin_define ("__FreeBSD_kernel__"); \ builtin_define ("__GLIBC__"); \ builtin_define_std ("unix"); \ builtin_assert ("system=unix"); \ builtin_assert ("system=posix"); \ } \ while (0) I might raise this upstream at some point. tschwinge: i could guess the change was proposed by the kfreebsd people, so asking them before at d-bsd@d.o would be a start pinotree: Ack. especially that they would need to fix stuff afterwards imho we could propose them the change, and if they agree put that as local patch to debian's gcc4.6/.7 after wheezy, so there is plenty of time for them to fix stuff what should be done first is, however, find out why that define has been added to gcc [[!message-id "201211061305.02565.pino@debian.org"]]. IRC, freenode, #hurd, 2014-01-08: How come __GLIBC__ is defined in gcc for kFreeBSD and not GNU? They sometimes use that instead of __FreeBSD_kernel__ it's defined by libc's /usr/include/features.h pochu: __GLIBC__ is defined in features.h both for GNU and kFreeBSD, but only in gcc/cpp for kFreeBSD: touch foo.h;gcc -E -dM foo.h|grep GLIBC gnu_srs: #include pochu: they both include gnu_srs: I get __GLIBC__ defined if I include features.h with an empty file (as suggested by your `touch foo.h') I don't get it defined, whether on hurd or linux, but I think that's expected pochu: might be so but it is not pre-defined in CPP, as it is for kFreeBSD. I think it should not be defined, or it should be defined by all three: GNU,.kFreeBSD and Linux an anomaly, something for tschwinge https://lists.debian.org/debian-bsd/2012/11/msg00016.html braunr: good finding, I assume nothing has happened since then? not likely * [low] Does `-mcpu=native` etc. work? (For example, 2ae1f0cc764e998bfc684d662aba0497e8723e52.) * transactional memory, 4c0315d05fa0f707875686abc4f91f7a979a7c7b * `config/mmap.m4` * In `libitm/config/`, is the generic stuff (`tls.h`, etc.) enough for us? * f29a2041f32773464e226a83f41762c2e9cf658e (e53a96c2136f7cdff4699475fea41afeed9dece3) Testresults same as for GNU/Linux. * [high] 3efc00f6f17778172d3fa7ac737fa1473b3b4d5a, `Check __GLIBC__ when using __SIGRTMIN`. GCC PR52390. Fixed by 8d2259c83f94c082ad8a00b5d00bb639ce24efce. * 15ac1e637ad0cb92bf7629205c617ea847a4b810 `Build 64-bit libffi multilib for i?86-linux`. * `libstdc++`: uses `_GLIBCXX_HAVE_TLS`, but where is this defined? Supposed to come from `config/tls.m4:GCC_CHECK_TLS`? * `libgcc/gthr-posix.h:__gthread_active_p` -- is this suitable for us? This is used in libgcc for ObjC wrapper stuff and similar in libstdc++. C.f. [[!message-id "x57jobtqx89w.fsf@frobland.mtv.corp.google.com"]], [[!message-id "x57jd359fkx3.fsf@frobland.mtv.corp.google.com"]] as well as [[!debbug 629866]]/[[!message-id "20110609002620.GA16719@const.famille.thibault.fr"]]. commit 026e608ecebcb2a6193971006a85276307d79b00. * [[`libsanitizer`|_san]] (not reviewed) A lot of Linux-specific things. * 30f690e026ecdf99c68e777a48562b58afe37f43 `TARGET_LIBC_HAS_FUNCTION`. Where is `targetm` set? All TARGET_C99_FUNCTIONS and TARGET_HAS_SINCOS gone? * `libvtv` * Disabled in `configure.tgt`. * `libvtv/vtv_rts.cc`: `if (strcmp (info->dlpi_name, "linux-vdso.so.1") == 0)` -- not a problem for us, but... * `libvtv/vtv_rts.cc`: `/proc/self/exe` usage, `PATH_MAX`. * ./libgomp/testsuite/libgomp.c/affinity-1.c Linux usage * `libcilkrts` Disabled for Hurd. libcilkrts/Makefile.am: +# If we're building on Linux, use the Linux version script +if LINUX_LINKER_SCRIPT + libcilkrts_la_LDFLAGS += -Wl,--version-script,$(srcdir)/runtime/linux-symbols.ver +endif libcilkrts/configure.ac: +# We have linker scripts for appropriate operating systems +linux_linker_script=no +case "${host}" in + *-*-linux*) + linux_linker_script=yes + ;; +esac +AM_CONDITIONAL(LINUX_LINKER_SCRIPT, test "$linux_linker_script" = "yes") libcilkrts/runtime/cilk_malloc.c: +#if defined _WIN32 || defined _WIN64 || defined __linux__ +#include +#define HAS_MEMALIGN 1 +#endif libcilkrts/runtime/config/x86/cilk-abi-vla.c: +#if defined(__x86_64) + // For Intel64 linux & MACH ABI, all the parameters were passed in + // register, so top of the stack frame above the return address + // is just the size of the return address plus + // distance_from_sp_to_alloca_area on the chance that the alloca + // area isn't at the very bottom of the calling functions stack. +#elif defined(__MACH__) + // For ia32 MACH, parameter size is always a mutliple of 16 + // bytes to keep the stack 16 byte aligned. So we need to round + // number of parameters up to multiple of 4. + param_size = 8 * sizeof(char *); +#else + // For both windows Intel64 ABI, and the IA32 windows and + // linux ABIs, space is reserved on the stack for all these + // parameters. param_size is 5 * size of a stack slot. + param_size = 5 * sizeof(char *); +#endif +#if defined(__x86_64) + // For Intel64 linux & MACH ABI, all the parameters were passed in + // register, so top of the stack frame above the return address + // is just the size of the return address plus + // distance_from_sp_to_alloca_area on the chance that the alloca + // area isn't at the very bottom of the calling functions stack. +#elif defined(__MACH__) + // For ia32 MACH, parameter size is always a mutliple of 16 + // bytes to keep the stack 16 byte aligned. So we need to round + // number of parameters up to multiple of 4. + param_size = 8 * sizeof(char *); +#else + // For both windows Intel64 ABI, and the IA32 windows and + // linux ABIs, space is reserved on the stack for all these + // parameters. param_size is 5 * size of a stack slot. + param_size = 6 * sizeof(char *); +#endif libcilkrts/runtime/os-unix.c: +#ifdef __linux__ + // define _GNU_SOURCE before *any* #include. + // Even will break later #includes if this macro is not + // already defined when it is #included. +# define _GNU_SOURCE +#endif +#if defined __linux__ +# include +# include Syscall usage outside __linux__? Will run into: +#else +#error "Unknown architecture" libcilkrts/runtime/sysdep-unix.c: +#ifdef __linux__ + // define _GNU_SOURCE before *any* #include. + // Even will break later #includes if this macro is not + // already defined when it is #included. +# define _GNU_SOURCE +#endif +#ifdef __linux__ +# include +# include +#endif +#if defined( __linux__) || defined(__VXWORKS__) + pthread_t tid = *(pthread_t *)thread_id; + if (i < 0 || i > g->total_workers) + return 0; + return g->sysdep->threads[i] == tid; +#else + // Needs to be implemented + return 0; +#endif IRC, freenode, #hurd, 2014-01-10: bwaarf, libcilkrts in gcc-4.9 libcilkrts? the runtime for the cilk language I guess Yes. That most likely needs disabling for us. I'll hve a look eventually. As soon as I get resolved, actually. [[!debbug 734973]]. gcc-4.9/debian/patches/libcilkrts-targets.diff * Debian GCC 48594516135e34a726cafe3863a4dc661bbd61a4 `boehm-gc: use anonymous mmap instead of brk also on hurd-*.`. [[!debbug 753791]]. # Build Here's a log of a GCC build run; this is from our [[Git repository's f91948d1bd857c81bb2cea688457b84fa3ce6b84 (2014-09-26; d3faa4b6d102b09a5ea17bbf81590f215b42fbc4 (2014-09-26)) sources|source_repositories/gcc]], run on kepler.SCHWINGE and laplace.SCHWINGE. $ export LC_ALL=C $ (cd ../master/ && contrib/gcc_update --touch) $ ../master/configure --prefix="$PWD".install SHELL=/bin/dash CC=gcc-4.9 CXX=g++-4.9 --enable-languages=all,ada 2>&1 | tee log_build [...] $ make 2>&1 | tee log_build_ [...] Different hosts may default to different shells and compiler versions; thus harmonized. This takes up around 4 GiB, and runs for [[4 h 48 min|performance#measure]] on kepler.SCHWINGE and [[5 h 10 min|performance#measure]] on laplace.SCHWINGE. ## Analysis $ toolchain/logs/process gcc build * [[`checking if gcc static flag -static works... no`|glibc_madvise_vs_static_linking]] Addressed in Debian glibc. * `gcc/config/host-linux.c` vs. `host-default.c` * `gcc/config/x-linux` * *fixincludes* stuff * malloc? -cat ../../hurd/gcc/config/i386/pmm_malloc.h > mm_malloc.h +cat ../../hurd/gcc/config/i386/gmm_malloc.h > mm_malloc.h Comes from `gcc/config.gcc`: `i386/t-pmm_malloc` vs. `i386/t-gmm_malloc` for `i[34567]86-*-linux*` vs. `i[34567]86-*-*`. 2004-08-03, PR target/16570, id:20040802163509.GA18487@lucon.org * `libgomp` * `libgomp/config/linux`, `libgomp/config/linux/x86` `sed`ed away in `log_build*`. TODO. * `-march=i486 -mtune=i686` `sed`ed away in `log_build*`. This comes from `libgomp/configure.tgt`, where this is added to `XCFLAGS` for `i[456]86-*-linux*` only. TODO? * Missing `EOWNERDEAD`, `ENOTRECOVERABLE`. What're they used for? * `RLIMIT_VMEM`. Usage kosher? * `libtool: link: ar rc .libs/libstdc++.a [...]` Just different order of object files, or another problem? TODO * `libobjc/encoding.c`: libtool: compile: [...]/hurd/master.build/./gcc/xgcc [...] [...]/hurd/master/libobjc/encoding.c -c [...] +[...]/hurd/master/libobjc/encoding.c:128:1: warning: '_darwin_rs6000_special_round_type_align' defined but not used [-Wunused-function] * `libobjc/thr.c`: `gcc/gthr-posix.h` libtool: compile: [...]/hurd/master.build/./gcc/xgcc [...] [...]/hurd/master/libobjc/thr.c -c [...] +In file included from [...]/hurd/master/libobjc/../libgcc/gthr.h:142:0, + from [...]/hurd/master/libobjc/thr.c:45: +../libgcc/gthr-default.h: In function '__gthread_objc_thread_set_priority': +../libgcc/gthr-default.h:388:41: warning: unused parameter 'priority' [-Wunused-parameter] * `/proc/self/*` -checking for /proc/self/exe... yes -checking for /proc/self/maps... yes +checking for /proc/self/exe... no +checking for /proc/self/maps... no * GCJ: `java-signal.h`, `java-signal-aux.h` -config.status: linking ../../../hurd/libjava/include/i386-signal.h to include/java-signal.h -config.status: linking ../../../hurd/libjava/include/i386-signal.h to include/java-signal-aux.h +config.status: linking ../../../hurd/libjava/include/default-signal.h to include/java-signal.h +config.status: linking ../../../hurd/libjava/include/default-signal.h to include/java-signal-aux.h * GCJ: `jni_md.h` -checking jni_md.h support... yes +checking jni_md.h support... configure: WARNING: no * *default library search path* -checking for the default library search path... /lib /usr/lib /lib/i386-linux-gnu /usr/lib/i386-linux-gnu /lib/i486-linux-gnu /usr/lib/i486-linux-gnu /usr/local/lib +checking for the default library search path... /lib /usr/lib [[binutils]] issue? Should be aligned by Samuel's binutils patch. * `./classpath/[...]/*.properties` Just different order of files, or another problem? * `libjava/gnu/gcj/util/natGCInfo.cc` libtool: compile: [...]/hurd/master.build/./gcc/xgcc [...] -c ../../../master/libjava/gnu/gcj/util/natGCInfo.cc [...] +../../../master/libjava/gnu/gcj/util/natGCInfo.cc:440:1: warning: unused parameter 'name' [-Wunused-parameter] +../../../master/libjava/gnu/gcj/util/natGCInfo.cc:446:1: warning: unused parameter 'name' [-Wunused-parameter] +../../../master/libjava/gnu/gcj/util/natGCInfo.cc:452:1: warning: unused parameter 'name' [-Wunused-parameter] * `libgcj.la` Just different order of object files, or another problem? Is there a pattern that GNU/Hurd hands out the files alphabetically sorted where it wouldn't need to ([[!taglink open_issue_hurd]])? * `libjvm.la`, `.libs/libjvm.so`, `libgij.la`, `.libs/libgij.so.12.0.0` `-Wl,-Bsymbolic` vs. `-Wl,-Bsymbolic-functions` * `jar` make[2]: Entering directory `[...]/hurd/master.build/[ARCH]/libjava' -: make ; exec make "AR_FLAGS=rc" [...] "RANLIB=ranlib" "DESTDIR=" "JAR=[...]/hurd/master.build/[ARCH]/libjava/scripts/jar" DO=all multi-do +: make ; exec make "AR_FLAGS=rc" [...] "RANLIB=ranlib" "DESTDIR=" "JAR=jar" DO=all multi-do Probably because kepler.SCHWINGE has an OpenJDK `/usr/bin/jar`, and laplace.SCHWINGE a GCJ one. 2013-12-01: Yes: uninstalled OpenJDK on kepler.SCHWINGE, and it changed to `JAR=jar`. There are other instances of this in the following. * `value-unwind.h` -DEFINES='' HEADERS='../../../master/libgcc/config/i386/value-unwind.h' \ +DEFINES='' HEADERS='' \ ../../../master/libgcc/mkheader.sh > tmp-libgcc_tm.h Comes from `gcc/config.gcc`: for `i[34567]86-*-linux*` vs. `i[34567]86-*-*`, but apparently is important only for *x86_64* anyway. * `soft-fp` prototypes ../../../master/libgcc/soft-fp/eqtf2.c:34:9: warning: no previous prototype for '__eqtf2' [-Wmissing-prototypes] +../../../master/libgcc/soft-fp/eqtf2.c:50:1: warning: no previous prototype for '__netf2' [-Wmissing-prototypes] ../../../master/libgcc/soft-fp/getf2.c:34:9: warning: no previous prototype for '__getf2' [-Wmissing-prototypes] +../../../master/libgcc/soft-fp/getf2.c:50:1: warning: no previous prototype for '__gttf2' [-Wmissing-prototypes] ../../../master/libgcc/soft-fp/letf2.c:34:9: warning: no previous prototype for '__letf2' [-Wmissing-prototypes] +../../../master/libgcc/soft-fp/letf2.c:50:1: warning: no previous prototype for '__lttf2' [-Wmissing-prototypes] * `libatomic` on GNU/Linux compiles several more files than on GNU/Hurd. Is that correct? Probably futex support. # Install $ make install 2>&1 | tee log_install [...] This takes up around 1.1 GiB, and runs for [[3 min|performance#measure]] on kepler.SCHWINGE and [[13 min|performance#measure]] on laplace.SCHWINGE. ## Analysis $ toolchain/logs/process gcc install * `libtool: finish`: `ldconfig` is not run for the Hurd. [[libtool]]. * `libjvm.la`, `.libs/libjvm.so`, `libgij.la`, `.libs/libgij.so.12.0.0` `-Wl,-Bsymbolic` vs. `-Wl,-Bsymbolic-functions` (as above) * `jar`: as above. # Testsuite Testing on GNU/Hurd is blocked on [[fork_mach_port_mod_refs_ekern_urefs_owerflow]]. TODO. On GNU/Hurd, it is advisable to reboot after having built and installed GCC, before running the testsuite, as otherwise there seems to be a tendency that the system crashes during the `gcc.c-torture/compile/limits-structnest.c` tests, which are rather memory hungry, see [[!message-id "87bol6aixd.fsf@schwinge.name"]]. $ make -k check 2>&1 | tee log_test [...] This runs for [[10 h 46 min|performance#measure]] on kepler.SCHWINGE and [[18 h 10 min|performance#measure]] on laplace.SCHWINGE. ## Analysis $ toolchain/logs/process gcc test * PTYs Occasionally tests FAIL due to: spawn -open -1 failed, 1 5, The system has no more ptys. Ask your system administrator to create more. TODO. * Some are correctly UNSUPPORTED: * [[IFUNC]] Also multiversioning, `g++.dg/ext/mv*`, for example (several of which started FAILing (ICE) on kepler.SCHWINGE). * [[`asan.exp`|_san]] * missing profiling C library (`-lc_p`) `g++.old-deja/g++.law/profile1.C`, `gcc.dg/20021014-1.c`, `gcc.dg/nest.c`, `gcc.dg/nested-func-4.c`, `gcc.dg/pr32450.c`, `gcc.dg/pr43643.c` * other C libraries `gcc.target/i386/long-double-64-2.c`, `gcc.target/i386/long-double-80-3.c` * `gcc` spawn [open ...] FAIL: gcc.dg/split-2.c execution test FAIL: gcc.dg/split-5.c execution test TODO. xgcc: internal compiler error: Aborted (program cc1) libbacktrace could not find executable to open Please submit a full bug report, [...] FAIL: largefile.c -O0 -g -I. -Dwith_PCH (internal compiler error) [...] TODO. * `g++` spawn [open ...] terminate called after throwing an instance of 'int' FAIL: g++.dg/eh/sighandle.C -std=gnu++98 execution test FAIL: g++.dg/eh/sighandle.C -std=gnu++11 execution test TODO. spawn [open ...] FAIL: g++.dg/cdce3.C -std=gnu++98 execution test FAIL: g++.dg/cdce3.C -std=gnu++11 execution test TODO. * `gcc`, `g++` FAIL: gcc.dg/cleanup-10.c execution test FAIL: gcc.dg/cleanup-11.c execution test FAIL: gcc.dg/cleanup-8.c execution test FAIL: gcc.dg/cleanup-9.c execution test FAIL: g++.dg/ext/cleanup-10.C -std=gnu++98 execution test FAIL: g++.dg/ext/cleanup-10.C -std=gnu++11 execution test FAIL: g++.dg/ext/cleanup-11.C -std=gnu++98 execution test FAIL: g++.dg/ext/cleanup-11.C -std=gnu++11 execution test FAIL: g++.dg/ext/cleanup-8.C -std=gnu++98 execution test FAIL: g++.dg/ext/cleanup-8.C -std=gnu++11 execution test FAIL: g++.dg/ext/cleanup-9.C -std=gnu++98 execution test FAIL: g++.dg/ext/cleanup-9.C -std=gnu++11 execution test TODO. spawn [open ...] gdb: took too long to attach testcase [...]/gcc/testsuite/gcc.dg/guality/guality.exp completed in 16 seconds spawn [open ...] gdb: took too long to attach testcase [...]/gcc/testsuite/g++.dg/guality/guality.exp completed in 20 seconds TODO. The gfortran ones worked fine. * `[ARCH]/libgomp` As of dcdba5abca23716daa6aeb5c92f367e0978e4539 (2013-05-27; 0479dc77cf50ee78769b55563051cf72d39b3d60 (2013-05-27)), plus `id:"87txlnlg0z.fsf@kepler.schwinge.homeip.net"`, about a dozen of them (but different ones per each run) FAIL on laplace.SCHWINGE: spawn [open ...] Program aborted. Backtrace: #0 0x1042523 #1 0x1043D6F #2 0x10F9BC7 FAIL: libgomp.fortran/lib1.f90 -O1 execution test All have basically the same backtrace. TODO. * `[ARCH]/libjava` spawn [open ...] Exception in thread "main" java.io.IOException: Invalid argument at gnu.java.nio.channels.FileChannelImpl.write(natFileChannelImpl.cc:202) at java.io.FileOutputStream.write(libgcj.so.14) at java.io.DataOutputStream.write(libgcj.so.14) at java.io.RandomAccessFile.write(libgcj.so.14) at LargeFile.main(LargeFile.exe) FAIL: LargeFile execution - source compiled test UNTESTED: LargeFile output - source compiled test FAIL: LargeFile -findirect-dispatch execution - source compiled test UNTESTED: LargeFile -findirect-dispatch output - source compiled test FAIL: LargeFile -O3 execution - source compiled test UNTESTED: LargeFile -O3 output - source compiled test FAIL: LargeFile -O3 -findirect-dispatch execution - source compiled test UNTESTED: LargeFile -O3 -findirect-dispatch output - source compiled test TODO. spawn [open ...] 1 FAIL: Throw_2 execution - source compiled test UNTESTED: Throw_2 output - source compiled test FAIL: Throw_2 -findirect-dispatch execution - source compiled test UNTESTED: Throw_2 -findirect-dispatch output - source compiled test FAIL: Throw_2 -O3 execution - source compiled test UNTESTED: Throw_2 -O3 output - source compiled test FAIL: Throw_2 -O3 -findirect-dispatch execution - source compiled test UNTESTED: Throw_2 -O3 -findirect-dispatch output - source compiled test TODO. * `[ARCH]/libstdc++-v3` FAIL: libstdc++-abi/abi_check TODO. $ readelf --symbols --wide i686-unknown-gnu0.3/./libstdc++-v3/src/.libs/libstdc++.so | grep pthread_mutex 1065: 00000000 0 FUNC WEAK DEFAULT UND pthread_mutex_unlock@GLIBC_2.13_DEBIAN_31 (37) 2515: 00000000 0 FUNC WEAK DEFAULT UND pthread_mutex_lock@GLIBC_2.13_DEBIAN_31 (37) 2978: 00068430 15 FUNC GLOBAL DEFAULT 11 _ZNSt12__basic_fileIcEC2EP15__pthread_mutex@@GLIBCXX_3.4 3790: 00068430 15 FUNC GLOBAL DEFAULT 11 _ZNSt12__basic_fileIcEC1EP15__pthread_mutex@@GLIBCXX_3.4 2085: 00000000 0 FUNC WEAK DEFAULT UND pthread_mutex_unlock@@GLIBC_2.13_DEBIAN_31 3535: 00000000 0 FUNC WEAK DEFAULT UND pthread_mutex_lock@@GLIBC_2.13_DEBIAN_31 3998: 00068430 15 FUNC GLOBAL DEFAULT 11 _ZNSt12__basic_fileIcEC2EP15__pthread_mutex 4810: 00068430 15 FUNC GLOBAL DEFAULT 11 _ZNSt12__basic_fileIcEC1EP15__pthread_mutex `_ZNSt12__basic_fileIcEC1EP15__pthread_mutex` (`std::__basic_file::__basic_file(__pthread_mutex*)`), but `_ZNSt12__basic_fileIcEC2EP15pthread_mutex_t` (`std::__basic_file::__basic_file(pthread_mutex_t*)`) is expected. FAIL: 22_locale/time_get/get_date/wchar_t/4.cc execution test FAIL: 27_io/basic_filebuf/close/char/4879.cc execution test FAIL: 27_io/basic_filebuf/close/char/9964.cc execution test FAIL: 27_io/basic_filebuf/imbue/char/13171-2.cc execution test FAIL: 27_io/basic_filebuf/imbue/wchar_t/14975-2.cc execution test WARNING: program timed out. FAIL: 27_io/basic_filebuf/open/char/9507.cc execution test FAIL: 27_io/basic_filebuf/seekoff/char/26777.cc execution test WARNING: program timed out. FAIL: 27_io/basic_filebuf/showmanyc/char/9533-1.cc execution test FAIL: 27_io/basic_filebuf/underflow/char/10097.cc execution test FAIL: 27_io/objects/char/7.cc execution test FAIL: 27_io/objects/char/9661-1.cc execution test FAIL: 27_io/objects/wchar_t/7.cc execution test FAIL: 27_io/objects/wchar_t/9661-1.cc execution test FAIL: 30_threads/async/42819.cc execution test FAIL: 30_threads/async/49668.cc execution test FAIL: 30_threads/async/54297.cc execution test FAIL: 30_threads/async/any.cc execution test FAIL: 30_threads/async/async.cc execution test FAIL: 30_threads/async/sync.cc execution test FAIL: 30_threads/call_once/39909.cc execution test FAIL: 30_threads/call_once/49668.cc execution test FAIL: 30_threads/call_once/call_once1.cc execution test FAIL: 30_threads/condition_variable/54185.cc execution test FAIL: 30_threads/condition_variable_any/50862.cc execution test FAIL: 30_threads/condition_variable_any/53830.cc execution test FAIL: 30_threads/future/members/45133.cc execution test FAIL: 30_threads/future/members/get.cc execution test FAIL: 30_threads/future/members/get2.cc execution test FAIL: 30_threads/future/members/share.cc execution test FAIL: 30_threads/future/members/valid.cc execution test FAIL: 30_threads/future/members/wait.cc execution test FAIL: 30_threads/future/members/wait_for.cc execution test FAIL: 30_threads/future/members/wait_until.cc execution test FAIL: 30_threads/lock/2.cc execution test FAIL: 30_threads/lock/4.cc execution test FAIL: 30_threads/mutex/try_lock/2.cc execution test FAIL: 30_threads/packaged_task/49668.cc execution test FAIL: 30_threads/packaged_task/cons/3.cc execution test FAIL: 30_threads/packaged_task/cons/alloc.cc execution test FAIL: 30_threads/packaged_task/members/get_future.cc execution test FAIL: 30_threads/packaged_task/members/invoke.cc execution test FAIL: 30_threads/packaged_task/members/invoke2.cc execution test FAIL: 30_threads/packaged_task/members/invoke3.cc execution test FAIL: 30_threads/packaged_task/members/invoke4.cc execution test FAIL: 30_threads/packaged_task/members/invoke5.cc execution test FAIL: 30_threads/packaged_task/members/reset2.cc execution test FAIL: 30_threads/promise/cons/alloc.cc execution test FAIL: 30_threads/promise/cons/move.cc execution test FAIL: 30_threads/promise/cons/move_assign.cc execution test FAIL: 30_threads/promise/members/get_future.cc execution test FAIL: 30_threads/promise/members/set_exception.cc execution test FAIL: 30_threads/promise/members/set_exception2.cc execution test FAIL: 30_threads/promise/members/set_value.cc execution test FAIL: 30_threads/promise/members/set_value2.cc execution test FAIL: 30_threads/promise/members/set_value3.cc execution test FAIL: 30_threads/promise/members/swap.cc execution test FAIL: 30_threads/shared_future/members/get.cc execution test FAIL: 30_threads/shared_future/members/get2.cc execution test FAIL: 30_threads/shared_future/members/valid.cc execution test FAIL: 30_threads/shared_future/members/wait.cc execution test FAIL: 30_threads/shared_future/members/wait_for.cc execution test FAIL: 30_threads/shared_future/members/wait_until.cc execution test FAIL: 30_threads/this_thread/3.cc execution test FAIL: 30_threads/this_thread/4.cc execution test FAIL: 30_threads/thread/cons/2.cc execution test FAIL: 30_threads/thread/cons/3.cc execution test FAIL: 30_threads/thread/cons/4.cc execution test FAIL: 30_threads/thread/cons/49668.cc execution test FAIL: 30_threads/thread/cons/5.cc execution test FAIL: 30_threads/thread/cons/6.cc execution test FAIL: 30_threads/thread/cons/7.cc execution test FAIL: 30_threads/thread/cons/8.cc execution test FAIL: 30_threads/thread/cons/9.cc execution test FAIL: 30_threads/thread/cons/moveable.cc execution test FAIL: 30_threads/thread/members/1.cc execution test FAIL: 30_threads/thread/members/2.cc execution test FAIL: 30_threads/thread/members/3.cc execution test FAIL: 30_threads/thread/native_handle/cancel.cc execution test FAIL: 30_threads/thread/swap/1.cc execution test FAIL: 30_threads/timed_mutex/try_lock/2.cc execution test FAIL: 30_threads/timed_mutex/try_lock_for/3.cc execution test FAIL: 30_threads/timed_mutex/try_lock_until/2.cc execution test FAIL: 30_threads/try_lock/2.cc execution test FAIL: 30_threads/try_lock/4.cc execution test TODO. Perhaps just timeouts? [[!message-id "200609052027.NAA09861@hpsje.cup.hp.com"]]. [[!message-id "1227217275.6205.6.camel@janis-laptop"]]. If needed, can re-implement in GCC DejaGnu's `remote.exp:remote_wait` to get rid of (that is, ignore) its `timeout` parameter which, in DejaGnu code, is often invoked with a hard-coded value (that we may want to override) (or is that what `gcc/testsuite/lib/timeout.exp:standard_wait` is for?). * What is `gcc/testsuite/gcc.test-framework/test-framework.exp` and should we define `CHECK_TEST_FRAMEWORK` to run these tests? ## Enhancements ### `contrib/testsuite-management/`, `contrib/regression/` * 35a27ee8c4b349fea44fd1fadc9614ab3cc9d578 `Add an xfail manifest for x86_64-unknown-linux-gnu to trunk.` ### Parallel Testing [[!message-id "20110331070322.GI11563@sunsite.ms.mff.cuni.cz"]]. ### Distributed Testing #### IRC, OFTC, #gcc, 2012-05-31 jsm28: in your mentor testing, you have the source and build tree available for make check? or it's a pure installed-tree test? dnovillo: Source tree, install tree, no build tree. jsm28: so, you run make check on top of the source tree or copy the */testsuite trees to a testing area? Create a site.exp and do runtest in a temporary directory. runtest is pointed to the source tree to find sources. For cross testing for GNU/Linux targets, the temporary directory is mounted at the same path on host and target. jsm28: thanks. i guess i'll have to find the slice of the source tree i need to copy. jsm28: for libstdc++ do you write a different site.exp? i noticed that it generates a different site,exp there. The site.exp is mostly the same for all testsuites (so includes settings that only some testsuites use). ok, thanks. and when you say "pointed to the source tree" you mean "set srcdir /path/to/top/of/gcc" ? (in site.exp) The GDB testsuite requires that you run the GDB testsuite's configure script in the temporary directory where you will run runtest. I don't think any GCC testsuites we use have requirements like that. dnovillo: --srcdir option to runtest. ah, yes. (and --tool, --target_board etc.) right since i'm distributing the tests. i want each node to only do a bunch of files. this means that i either use 'tool.exp=file-pattern' or simply copy the subset of files i want tool.exp to find. i chose the second approach, but that breaks in a handful of cases that need files from other sub-directories. like g++.dg gcc.dg using stuff from c-c++-common. for libstdc++, the possibilities for splitting are enormous as it has many directories. but i'm not setting it right. runtest runs without even trying to test anything. i'm not having it pick up the right driver. Probably all .exp files should be copied to anywhere running testsuites, since some read .exp files from other directories. jsm28: that could be it too. it's irritating that libstdc++ does not even error out. runtest just does nothing and returns 0. ##### IRC, OFTC, #gcc, 2012-06-06 any libstdc++ maintainer around? or, does anyone know when the testsuite/data files are copied into the running testsuite/ dir? seems to be done in advance by make. ##### [[!message-id "4FC7791E.6040407@gmail.com"]]