For non-GCC (Sun) compilers check for "-xldscope=hidden". Use it if
supported to hide the internal symbols.
Cc: Alan Coopersmith <alan.coopersmith@xxxxxxxxxx>
Signed-off-by: Emil Velikov <emil.l.velikov@xxxxxxxxx>
---
configure.ac | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/configure.ac b/configure.ac
index 1fcc8de..91c6662 100644
--- a/configure.ac
+++ b/configure.ac
@@ -405,6 +405,19 @@ if test "x$GCC" = xyes; then
# Restore CFLAGS; VISIBILITY_CFLAGS are added to it where needed.
CFLAGS=$save_CFLAGS
AC_SUBST([VISIBILITY_CFLAGS])
+else
+ # Enable -xldscope=hidden if using a compiler that supports it (SUNCC)
+ save_CFLAGS="$CFLAGS"
+ AC_MSG_CHECKING([whether $CC supports -xldscope=hidden])
+ VISIBILITY_CFLAGS="-xldscope=hidden"
+ CFLAGS="$CFLAGS $VISIBILITY_CFLAGS"
+ AC_LINK_IFELSE([AC_LANG_PROGRAM()], AC_MSG_RESULT([yes]),
+ [VISIBILITY_CFLAGS=""; AC_MSG_RESULT([no])]);
+
+ # Restore CFLAGS; VISIBILITY_CFLAGS are added to it where needed.
+ CFLAGS=$save_CFLAGS
+ AC_SUBST([VISIBILITY_CFLAGS])
+
fi
AC_MSG_CHECKING([whether $CC supports __attribute__((visibility))])
--
2.3.1
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