diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 71191f14ad7..5bd29a4d2f2 100644 --- a/configure.ac +++ b/configure.ac @@ -525,6 +525,17 @@ if test "$GCC" = yes -a "$ICC" = no; then # Optimization flags for specific files that benefit from vectorization PGAC_PROG_CC_VAR_OPT(CFLAGS_VECTORIZE, [-ftree-vectorize]) # + # If the compiler knows how to hide symbols add the switch needed for that + # to CFLAGS_SL_MODULE and define HAVE_VISIBILITY_ATTRIBUTE. + PGAC_PROG_CC_VAR_OPT(CFLAGS_SL_MODULE, [-fvisibility=hidden]) + if test "$pgac_cv_prog_CC_cflags__fvisibility_hidden" = yes; then + AC_DEFINE([HAVE_VISIBILITY_ATTRIBUTE], 1, + [Define to 1 if your compiler knows the visibility("hidden") attribute.]) + fi + # For C++ we additionally want -fvisibility-inlines-hidden + PGAC_PROG_VARCXX_VARFLAGS_OPT(CXX, CXXFLAGS_SL_MODULE, [-fvisibility=hidden]) + PGAC_PROG_VARCXX_VARFLAGS_OPT(CXX, CXXFLAGS_SL_MODULE, [-fvisibility-inlines-hidden]) + # # The following tests want to suppress various unhelpful warnings by adding # -Wno-foo switches. But gcc won't complain about unrecognized -Wno-foo # switches, so we have to test for the positive form and if that works, @@ -573,6 +584,8 @@ fi AC_SUBST(CFLAGS_UNROLL_LOOPS) AC_SUBST(CFLAGS_VECTORIZE) +AC_SUBST(CFLAGS_SL_MODULE) +AC_SUBST(CXXFLAGS_SL_MODULE) # Determine flags used to emit bitcode for JIT inlining. # 1. We must duplicate any behaviour-changing compiler flags used above, |