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configure: Enable -fvisibility=hidden for g++ as well

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This commit is contained in:
Kristian Høgsberg 2010-09-08 20:34:07 -04:00
parent 7fc882643c
commit 7b34fcc487
1 changed files with 7 additions and 0 deletions
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7
configure.ac
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@ -155,6 +155,13 @@ fi
if test "x$GXX" = xyes; then
CXXFLAGS="$CXXFLAGS -Wall"
# Enable -fvisibility=hidden if using a gcc that supports it
save_CXXFLAGS="$CXXFLAGS"
AC_MSG_CHECKING([whether $CXX supports -fvisibility=hidden])
CXXFLAGS="$CXXFLAGS -fvisibility=hidden"
AC_LINK_IFELSE([AC_LANG_PROGRAM()], AC_MSG_RESULT([yes]),
[CXXFLAGS="$save_CXXFLAGS" ; AC_MSG_RESULT([no])]);
# Work around aliasing bugs - developers should comment this out
CXXFLAGS="$CXXFLAGS -fno-strict-aliasing"
fi