diff options
Diffstat (limited to 'configure')
| -rwxr-xr-x | configure | 92 |
1 files changed, 91 insertions, 1 deletions
@@ -673,6 +673,8 @@ V6_FLAG OPENSSL_LIBS HTTPS_SUPPORT AM_CFLAGS +HAVE_VISIBILITY +CFLAG_VISIBILITY LDFLAGS_PIE CFLAGS_PIE DEFAULT_LDFLAGS @@ -13994,7 +13996,95 @@ fi ### Check for -fvisibility=hidden support -gl_VISIBILITY + + + CFLAG_VISIBILITY= + HAVE_VISIBILITY=0 + if test -n "$GCC"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the -Werror option is usable" >&5 +$as_echo_n "checking whether the -Werror option is usable... " >&6; } +if ${gl_cv_cc_vis_werror+:} false; then : + $as_echo_n "(cached) " >&6 +else + gl_save_CFLAGS="$CFLAGS" + CFLAGS="$CFLAGS -Werror" + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main () +{ + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + gl_cv_cc_vis_werror=yes +else + gl_cv_cc_vis_werror=no +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext + CFLAGS="$gl_save_CFLAGS" + +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gl_cv_cc_vis_werror" >&5 +$as_echo "$gl_cv_cc_vis_werror" >&6; } + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for simple visibility declarations" >&5 +$as_echo_n "checking for simple visibility declarations... " >&6; } +if ${gl_cv_cc_visibility+:} false; then : + $as_echo_n "(cached) " >&6 +else + gl_save_CFLAGS="$CFLAGS" + CFLAGS="$CFLAGS -fvisibility=hidden" + if test $gl_cv_cc_vis_werror = yes; then + CFLAGS="$CFLAGS -Werror" + fi + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +extern __attribute__((__visibility__("hidden"))) int hiddenvar; + extern __attribute__((__visibility__("default"))) int exportedvar; + extern __attribute__((__visibility__("hidden"))) int hiddenfunc (void); + extern __attribute__((__visibility__("default"))) int exportedfunc (void); + void dummyfunc (void); + int hiddenvar; + int exportedvar; + int hiddenfunc (void) { return 51; } + int exportedfunc (void) { return 1225736919; } + void dummyfunc (void) {} + +int +main () +{ + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + gl_cv_cc_visibility=yes +else + gl_cv_cc_visibility=no +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext + CFLAGS="$gl_save_CFLAGS" + +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gl_cv_cc_visibility" >&5 +$as_echo "$gl_cv_cc_visibility" >&6; } + if test $gl_cv_cc_visibility = yes; then + CFLAG_VISIBILITY="-fvisibility=hidden" + HAVE_VISIBILITY=1 + fi + fi + + + +cat >>confdefs.h <<_ACEOF +#define HAVE_VISIBILITY $HAVE_VISIBILITY +_ACEOF + + AM_CFLAGS="$AM_CFLAGS $CFLAG_VISIBILITY" |