diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index b501ddd439..5f75b25105 100644 --- a/configure.ac +++ b/configure.ac @@ -1254,6 +1254,33 @@ LIBC_LINKER_FEATURE([--no-dynamic-linker], [libc_cv_no_dynamic_linker=no]) LIBC_CONFIG_VAR([have-no-dynamic-linker], [$libc_cv_no_dynamic_linker]) +AC_CACHE_CHECK(whether to suppress unused version in version script, + libc_cv_undefined_version, [dnl +cat > conftest.c <<EOF +void foo (void) { } +EOF +cat > conftest.map <<EOF +VER_1.0 { + global: + bar; +}; +EOF +libc_cv_undefined_version="" +if ! AC_TRY_COMMAND([${CC-cc} -nostdlib -nostartfiles $no_ssp -fPIC -shared -Wl,--version-script=conftest.map conftest.c -o conftest.so]); +then + LIBC_LINKER_FEATURE([--undefined-version], + [-Wl,--undefined-version], + [libc_cv_support_undefined_version=yes], + [libc_cv_support_undefined_version=no]) + if test "$libc_cv_support_undefined_version" = no; then + AC_MSG_ERROR([support for -Wl,--undefined-version required]) + fi + libc_cv_undefined_version="-Wl,--undefined-version" +fi +rm -f conftest.*t]) +LIBC_CONFIG_VAR([config-ldflags-undefined-version],[$libc_cv_undefined_version]) + + AC_CACHE_CHECK(for -static-pie, libc_cv_static_pie, [dnl LIBC_TRY_CC_OPTION([-static-pie], [libc_cv_static_pie=yes], |