diff options
| author | Ludovic Courtès <ludo@gnu.org> | 2013-11-18 14:06:47 +0100 |
|---|---|---|
| committer | Ludovic Courtès <ludo@gnu.org> | 2013-11-18 14:06:47 +0100 |
| commit | a7bf595fffd3db97b14ab3d5a5703497de266cb9 (patch) | |
| tree | bd69f1f5c8b6cd91b1aa4ab54e4f499913865511 /gnu | |
| parent | 0129c94832a9fdd8c901848dd9e963e7c20063eb (diff) | |
gnu: gcc: Really always link against libgcc_s.so.
* gnu/packages/gcc.scm (gcc-4.7): Add snippet to add -lgcc_s to the
"lib" spec. Remove --as-needed trick from 65d3b7c: it had no effect
in cases where we have !static-libgcc && !shared-libgcc.
Diffstat (limited to 'gnu')
| -rw-r--r-- | gnu/packages/gcc.scm | 23 |
1 files changed, 7 insertions, 16 deletions
diff --git a/gnu/packages/gcc.scm b/gnu/packages/gcc.scm index f11e506bc7..aa3b48692e 100644 --- a/gnu/packages/gcc.scm +++ b/gnu/packages/gcc.scm @@ -161,11 +161,14 @@ where the OS part is overloaded to denote a specific ABI---into GCC (substitute* (find-files "gcc/config" "^gnu-user.*\\.h$") (("#define GNU_USER_TARGET_LIB_SPEC (.*)$" _ suffix) - ;; Note that with this "lib" spec, we may still add a - ;; RUNPATH to GCC even when `libgcc_s' is not NEEDED. - ;; There's not much that can be done to avoid it, though. + ;; Help libgcc_s.so be found (see also below.) Always use + ;; '-lgcc_s' so that libgcc_s.so is always found by those + ;; programs that use 'pthread_cancel' (glibc dlopens + ;; libgcc_s.so when pthread_cancel support is needed, but + ;; having it in the application's RUNPATH isn't enough; see + ;; <http://sourceware.org/ml/libc-help/2013-11/msg00023.html>.) (format #f "#define GNU_USER_TARGET_LIB_SPEC \ -\"-L~a/lib %{!static:-rpath=~a/lib %{!static-libgcc:-rpath=~a/lib64 -rpath=~a/lib}} \" ~a" +\"-L~a/lib %{!static:-rpath=~a/lib %{!static-libgcc:-rpath=~a/lib64 -rpath=~a/lib -lgcc_s}} \" ~a" libc libc out out suffix)) (("#define GNU_USER_TARGET_STARTFILE_SPEC.*$" line) (format #f "#define STANDARD_STARTFILE_PREFIX_1 \"~a/lib\" @@ -173,18 +176,6 @@ where the OS part is overloaded to denote a specific ABI---into GCC ~a" libc line)))) - ;; Use '-lgcc_s' rather than '--as-needed -lgcc_s', so that - ;; libgcc_s.so is always found by those programs that use - ;; 'pthread_cancel' (glibc dlopens libgcc_s.so when - ;; pthread_cancel support is needed, but having it in the - ;; application's RUNPATH isn't enough; see - ;; <http://sourceware.org/ml/libc-help/2013-11/msg00023.html>.) - ;; Also, "gcc_cv_ld_as_needed=no" as a configure flag doesn't - ;; work. - (substitute* "gcc/gcc.c" - (("#ifndef USE_LD_AS_NEEDED.*$" line) - (string-append "#undef USE_LD_AS_NEEDED\n" line))) - ;; Don't retain a dependency on the build-time sed. (substitute* "fixincludes/fixincl.x" (("static char const sed_cmd_z\\[\\] =.*;") |