diff options
Diffstat (limited to 'configure.in')
| -rw-r--r-- | configure.in | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/configure.in b/configure.in index 8b797c792e..11421eff9f 100644 --- a/configure.in +++ b/configure.in @@ -489,6 +489,54 @@ if test $libc_cv_asm_set_directive = yes; then AC_DEFINE(HAVE_ASM_SET_DIRECTIVE) fi +AC_CACHE_CHECK(for .symver assembler directive, libc_cv_asm_symver_directive, +[cat > conftest.s <<EOF +.text +_sym: ret +.symver _sym,sym@VERS +EOF +if ${CC-cc} -c $CFLAGS $CPPFLAGS conftest.s 1>&AC_FD_CC 2>&AC_FD_CC; then + libc_cv_asm_symver_directive=yes +else + libc_cv_asm_symver_directive=no +fi +rm -f conftest*]) +AC_CACHE_CHECK(for ld --version-script, libc_cv_ld_version_script_option, [dnl +if test $libc_cv_asm_symver_directive = yes; then + cat > conftest.s <<EOF +.text +_sym: ret +.symver _sym,sym@VERS +EOF + cat > conftest.map <<EOF +VERS { + global: sym; +}; +EOF + if ${CC-cc} -c $CFLAGS $CPPFLAGS conftest.s 1>&AC_FD_CC 2>&AC_FD_CC; then + if AC_TRY_COMMAND([${CC-cc} $CFLAGS --shared -o conftest.so conftest.o + -Wl,--version-script,conftest.map]); + then + libc_cv_ld_version_script_option=yes + else + libc_cv_ld_version_script_option=no + fi + else + libc_cv_ld_version_script_option=no + fi +else + libc_cv_ld_version_script_option=no +fi +rm -f conftest*]) +if test $libc_cv_asm_symver_directive = yes && + test $libc_cv_ld_version_script_option = yes; then + VERSIONING=yes + AC_DEFINE(DO_VERSIONING) +else + VERSIONING=no +fi +AC_SUBST(VERSIONING) + if test $elf = yes; then AC_CACHE_CHECK(for .previous assembler directive, libc_cv_asm_previous_directive, [dnl |