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| author | Jay Berkenbilt <ejb@ql.org> | 2019-06-22 02:27:31 +0200 |
|---|---|---|
| committer | Jay Berkenbilt <ejb@ql.org> | 2019-06-22 04:29:31 +0200 |
| commit | 864a546af6e1c17e0de2dc2be6da105f454b6e54 (patch) | |
| tree | 8c57f3d83d46b4391c40f093a22425c39db200de /configure.ac | |
| parent | 97833d7cf385b98854df62ee529b507d627cb829 (diff) | |
| download | qpdf-864a546af6e1c17e0de2dc2be6da105f454b6e54.tar.zst | |
Build with -fvisibility=hidden when supported
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 541b8c52..9cb99184 100644 --- a/configure.ac +++ b/configure.ac @@ -60,6 +60,33 @@ AC_SUBST(LT_AGE) LT_SONAME=$(expr $LT_CURRENT - $LT_AGE) AC_SUBST(LT_SONAME) +AC_MSG_CHECKING(for -fvisibility=hidden) +try_flags=-fvisibility=hidden +oCXXFLAGS=$CXXFLAGS +CXXFLAGS="$CXXFLAGS $try_flags" +AC_LANG_PUSH([C++]) +AC_LINK_IFELSE([AC_LANG_PROGRAM( + [[class X +{ + public: + __attribute__ ((visibility ("default"))) + X() {} + __attribute__ ((visibility ("default"))) + void f() {} +}; + ]],[[X x; x.f();]])], + [qpdf_VISIBILITY_HIDDEN=1], + [qpdf_VISIBILITY_HIDDEN=0]) +AC_LANG_POP +if test "$qpdf_VISIBILITY_HIDDEN" = "0"; then + AC_MSG_RESULT(no) + CXXFLAGS=$oCXXFLAGS +else + AC_MSG_RESULT(yes) + CFLAGS="$CFLAGS $try_flags" +fi + +AC_MSG_CHECKING(whether to use insecure random numbers) AC_ARG_ENABLE(insecure-random, AS_HELP_STRING([--enable-insecure-random], [whether to use stdlib's random number generator (default is no)]), |