diff options
| -rw-r--r-- | configure.in | 37 |
1 files changed, 35 insertions, 2 deletions
diff --git a/configure.in b/configure.in index 822478679..2d55c1277 100644 --- a/configure.in +++ b/configure.in @@ -255,8 +255,41 @@ if test x$enable_shared = xyes; then IMGDSONAME="libfltk_images.so.$FL_API_VERSION" CAIRODSONAME="libfltk_cairo.so.$FL_API_VERSION" DSOCOMMAND="\$(CXX) \$(DSOFLAGS) -Wl,-soname,\$@ \$(LDLIBS) -shared -fPIC $DEBUGFLAG -o" - OPTIM="$OPTIM -fvisibility=hidden" - CXXFLAGS="$CXXFLAGS -fvisibility-inlines-hidden" + + # See if the compiler supports -fvisibility... + AC_CACHE_CHECK([if the compiler supports -fvisibility], + ac_cv_cxx_fvisibility, [ + OLDCXXFLAGS="$CXXFLAGS" + CXXFLAGS="$CXXFLAGS -fvisibility=hidden" + AC_LANG_SAVE + AC_LANG_CPLUSPLUS + AC_TRY_COMPILE(,, + ac_cv_cxx_fvisibility=yes, + ac_cv_cxx_fvisibility=no) + CXXFLAGS="$OLDCXXFLAGS" + AC_LANG_RESTORE + ]) + if test x"$ac_cv_cxx_fvisibility" = xyes; then + OPTIM="$OPTIM -fvisibility=hidden" + fi + + # See if the compiler supports -fvisibility-inlines-hidden... + AC_CACHE_CHECK([if the compiler supports -fvisibility-inlines-hidden], + ac_cv_cxx_fvisibility_inlines, [ + OLDCXXFLAGS="$CXXFLAGS" + CXXFLAGS="$CXXFLAGS -fvisibility-inlines-hidden" + AC_LANG_SAVE + AC_LANG_CPLUSPLUS + AC_TRY_COMPILE(,, + ac_cv_cxx_fvisibility_inlines=yes, + ac_cv_cxx_fvisibility_inlines=no) + CXXFLAGS="$OLDCXXFLAGS" + AC_LANG_RESTORE + ]) + if test x"$ac_cv_cxx_fvisibility_inlines" = xyes; then + CXXFLAGS="$CXXFLAGS -fvisibility-inlines-hidden" + fi + if test "x$libdir" != "x/usr/lib" -a "x$libdir" != "x/usr/lib64"; then DSOLINK="-Wl,-rpath,$libdir" fi |