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Diffstat (limited to 'open_issues/gcc/c++.mdwn')
| -rw-r--r-- | open_issues/gcc/c++.mdwn | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/open_issues/gcc/c++.mdwn b/open_issues/gcc/c++.mdwn new file mode 100644 index 00000000..cab4c1f1 --- /dev/null +++ b/open_issues/gcc/c++.mdwn @@ -0,0 +1,41 @@ +[[!meta copyright="Copyright © 2008, 2009 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_porting open_issue_gcc fixed_in_debian]] + +Modify the [[hurd/building/cross-compiling]] shell script to configure GCC for +building GCC with C++ support when building its second (i.e., final) version. + +Compiling a most-trivial C++ program used to work with GCC 4.2 and 4.3 (and the +resulting binaries would also work), but linking fails with GCC SVN trunk: + + $ $TARGET-g++ -Wall a.cc -lpthread + /home/thomas/tmp/gnu-0/lib/gcc/i586-pc-gnu/4.4.0/../../../../i586-pc-gnu/lib/libgcc_s.so: undefined reference to `__multf3' + /home/thomas/tmp/gnu-0/lib/gcc/i586-pc-gnu/4.4.0/../../../../i586-pc-gnu/lib/libgcc_s.so: undefined reference to `__fixunstfsi' + /home/thomas/tmp/gnu-0/lib/gcc/i586-pc-gnu/4.4.0/../../../../i586-pc-gnu/lib/libgcc_s.so: undefined reference to `__subtf3' + /home/thomas/tmp/gnu-0/lib/gcc/i586-pc-gnu/4.4.0/../../../../i586-pc-gnu/lib/libgcc_s.so: undefined reference to `__divtf3' + /home/thomas/tmp/gnu-0/lib/gcc/i586-pc-gnu/4.4.0/../../../../i586-pc-gnu/lib/libgcc_s.so: undefined reference to `__copysigntf3' + /home/thomas/tmp/gnu-0/lib/gcc/i586-pc-gnu/4.4.0/../../../../i586-pc-gnu/lib/libgcc_s.so: undefined reference to `__addtf3' + /home/thomas/tmp/gnu-0/lib/gcc/i586-pc-gnu/4.4.0/../../../../i586-pc-gnu/lib/libgcc_s.so: undefined reference to `__lttf2' + /home/thomas/tmp/gnu-0/lib/gcc/i586-pc-gnu/4.4.0/../../../../i586-pc-gnu/lib/libgcc_s.so: undefined reference to `__floatsitf' + /home/thomas/tmp/gnu-0/lib/gcc/i586-pc-gnu/4.4.0/../../../../i586-pc-gnu/lib/libgcc_s.so: undefined reference to `__netf2' + /home/thomas/tmp/gnu-0/lib/gcc/i586-pc-gnu/4.4.0/../../../../i586-pc-gnu/lib/libgcc_s.so: undefined reference to `__floatunsitf' + /home/thomas/tmp/gnu-0/lib/gcc/i586-pc-gnu/4.4.0/../../../../i586-pc-gnu/lib/libgcc_s.so: undefined reference to `__eqtf2' + /home/thomas/tmp/gnu-0/lib/gcc/i586-pc-gnu/4.4.0/../../../../i586-pc-gnu/lib/libgcc_s.so: undefined reference to `__fabstf2' + collect2: ld returned 1 exit status + +Whether this defect report also applies to a natively-build GCC from SVN trunk +has not yet been checked. + +[[Thomas_Schwinge|tschwinge]] suspects the problem to be a configuration issue +of a GCC helper library, whose configuration setup has changed after GCC 4.3. + +The need for `-lpthread` is another story. See the Debian glibc patches +repository for details. |