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authorThomas Schwinge <thomas@schwinge.name>2010-04-14 09:02:07 +0200
committerThomas Schwinge <thomas@schwinge.name>2010-04-14 09:02:07 +0200
commit03501d57c9b91735de313c834a0d4fb23e48928e (patch)
treed72ad70a91cfb5e84fd74547804f86a7d6b70978 /open_issues
parent376c893e82a6925656150a7443e7d153919851a0 (diff)
hurd/building/cross-compiling: C++.
open_issues/gcc/c++: Fix pending.
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-[[!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.