diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 118 |
1 files changed, 26 insertions, 92 deletions
diff --git a/configure.ac b/configure.ac index ffa44ce..6a56826 100644 --- a/configure.ac +++ b/configure.ac @@ -1105,89 +1105,25 @@ if test $libc_cv_asm_set_directive = yes; then AC_DEFINE(HAVE_ASM_SET_DIRECTIVE) fi -AC_CACHE_CHECK(for .protected and .hidden assembler directive, - libc_cv_asm_protected_directive, [dnl -cat > conftest.s <<EOF -.protected foo -foo: -.hidden bar -bar: -EOF -if AC_TRY_COMMAND(${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then - libc_cv_asm_protected_directive=yes -else - AC_MSG_ERROR(assembler support for symbol visibility is required) -fi -rm -f conftest*]) - -if test $libc_cv_asm_protected_directive = yes; then - AC_CACHE_CHECK(whether __attribute__((visibility())) is supported, - libc_cv_visibility_attribute, - [cat > conftest.c <<EOF - int foo __attribute__ ((visibility ("hidden"))) = 1; - int bar __attribute__ ((visibility ("protected"))) = 1; -EOF - libc_cv_visibility_attribute=no - if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then - if grep '\.hidden.*foo' conftest.s >/dev/null; then - if grep '\.protected.*bar' conftest.s >/dev/null; then - libc_cv_visibility_attribute=yes - fi - fi - fi - rm -f conftest.{c,s} - ]) - if test $libc_cv_visibility_attribute != yes; then - AC_MSG_ERROR(compiler support for visibility attribute is required) - fi -fi - -if test $libc_cv_visibility_attribute = yes; then - AC_CACHE_CHECK(linker support for protected data symbol, - libc_cv_protected_data, - [cat > conftest.c <<EOF - int bar __attribute__ ((visibility ("protected"))) = 1; +AC_CACHE_CHECK(linker support for protected data symbol, + libc_cv_protected_data, + [cat > conftest.c <<EOF + int bar __attribute__ ((visibility ("protected"))) = 1; EOF - libc_cv_protected_data=no - if AC_TRY_COMMAND(${CC-cc} -nostdlib -nostartfiles -fPIC -shared conftest.c -o conftest.so); then - cat > conftest.c <<EOF - extern int bar; - int main (void) { return bar; } + libc_cv_protected_data=no + if AC_TRY_COMMAND(${CC-cc} -nostdlib -nostartfiles -fPIC -shared conftest.c -o conftest.so); then + cat > conftest.c <<EOF + extern int bar; + int main (void) { return bar; } EOF - if AC_TRY_COMMAND(${CC-cc} -nostdlib -nostartfiles conftest.c -o conftest conftest.so); then - libc_cv_protected_data=yes - fi + if AC_TRY_COMMAND(${CC-cc} -nostdlib -nostartfiles conftest.c -o conftest conftest.so); then + libc_cv_protected_data=yes fi - rm -f conftest.* - ]) -else - libc_cv_protected_data=no -fi + fi + rm -f conftest.* + ]) AC_SUBST(libc_cv_protected_data) -if test $libc_cv_visibility_attribute = yes; then - AC_CACHE_CHECK(for broken __attribute__((visibility())), - libc_cv_broken_visibility_attribute, - [cat > conftest.c <<EOF - int foo (int x); - int bar (int x) __asm__ ("foo") __attribute__ ((visibility ("hidden"))); - int bar (int x) { return x; } -EOF - libc_cv_broken_visibility_attribute=yes - if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then -changequote(,)dnl - if grep '\.hidden[ _]foo' conftest.s >/dev/null; then -changequote([,])dnl - libc_cv_broken_visibility_attribute=no - fi - fi - rm -f conftest.c conftest.s - ]) - if test $libc_cv_broken_visibility_attribute = yes; then - AC_MSG_ERROR(working compiler support for visibility attribute is required) - fi -fi - AC_CACHE_CHECK(for broken __attribute__((alias())), libc_cv_broken_alias_attribute, [cat > conftest.c <<EOF @@ -1211,20 +1147,18 @@ if test $libc_cv_broken_alias_attribute = yes; then AC_MSG_ERROR(working alias attribute support required) fi -if test $libc_cv_visibility_attribute = yes; then - AC_CACHE_CHECK(whether to put _rtld_local into .sdata section, - libc_cv_have_sdata_section, - [echo "int i;" > conftest.c - libc_cv_have_sdata_section=no - if ${CC-cc} $LDFLAGS -fPIC -shared -Wl,--verbose conftest.c -o conftest.so 2>&1 \ - | grep '\.sdata' >/dev/null; then - libc_cv_have_sdata_section=yes - fi - rm -f conftest.c conftest.so - ]) - if test $libc_cv_have_sdata_section = yes; then - AC_DEFINE(HAVE_SDATA_SECTION) - fi +AC_CACHE_CHECK(whether to put _rtld_local into .sdata section, + libc_cv_have_sdata_section, + [echo "int i;" > conftest.c + libc_cv_have_sdata_section=no + if ${CC-cc} $LDFLAGS -fPIC -shared -Wl,--verbose conftest.c -o conftest.so 2>&1 \ + | grep '\.sdata' >/dev/null; then + libc_cv_have_sdata_section=yes + fi + rm -f conftest.c conftest.so + ]) +if test $libc_cv_have_sdata_section = yes; then + AC_DEFINE(HAVE_SDATA_SECTION) fi AC_CACHE_CHECK(for .preinit_array/.init_array/.fini_array support, |