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| author | Niels Möller <nisse@lysator.liu.se> | 2004-11-17 22:16:13 +0100 |
|---|---|---|
| committer | Niels Möller <nisse@lysator.liu.se> | 2004-11-17 22:16:13 +0100 |
| commit | 1b1a44478115b239cdfa173a5ed1a95a115dc820 (patch) | |
| tree | 3323bd1403dac5db7e5259e09289f7f4e22fb924 /configure.ac | |
| parent | c7747446dfce98a83248c10547863154ce950c8e (diff) | |
| download | nettle-1b1a44478115b239cdfa173a5ed1a95a115dc820.tar.gz | |
(ASM_SYMBOL_PREFIX): Check if global symbols have a
leading underscore.
Rev: src/nettle/configure.ac:1.52
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac index 849b2bc8..75cff5bf 100644 --- a/configure.ac +++ b/configure.ac @@ -168,7 +168,30 @@ else fi AC_SUBST([CCPIC_MAYBE]) -LSH_MAKE_CONDITIONAL([ENABLE_ASM], [test x$enable_assembler = xyes]) +ASM_SYMBOL_PREFIX='' + +if test x$enable_assembler = xyes ; then + AC_CACHE_CHECK([if globals are prefixed by underscore], + nettle_cv_asm_underscore, + [ # Default is no underscore + nettle_cv_asm_underscore=no + AC_COMPILE_IFELSE( + [int a_global_symbol;], + [ nm conftest.$OBJEXT >conftest.out + if grep _a_global_symbol conftest.out >/dev/null ; then + nettle_cv_asm_underscore=yes + elif grep a_global_symbol conftest.out >/dev/null ; then + nettle_cv_asm_underscore=no + else + AC_MSG_WARN([nm doesn't list a_global_symbol at all]) + fi], + [AC_MSG_WARN([test program with a single global could not be compiled!?])])]) + if x$nettle_cv_asm_underscore=xyes ; then + ASM_SYMBOL_PREFIX='_' + fi +fi + +AC_SUBST(ASM_SYMBOL_PREFIX) AC_SUBST(SHLIBCFLAGS) AC_SUBST(SHLIBMAJOR) |