From 10489879f731465f3d2105870e7533c2b355af5d Mon Sep 17 00:00:00 2001
From: Dan Fandrich <dan@coneharvesters.com>
Date: Tue, 11 Jul 2006 21:35:35 +0000
Subject: [PATCH] Enable --enable-hidden-symbols for SunPro C
---
configure.ac | 21 +++++++++++++++++----
include/curl/curl.h | 9 +++++----
2 files changed, 22 insertions(+), 8 deletions(-)
diff --git a/configure.ac b/configure.ac
index c5486a387b..55a442f311 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1962,29 +1962,42 @@ AC_HELP_STRING([--disable-cookies],[Disable cookies support]),
dnl ************************************************************
dnl Enable hiding of internal symbols in library to reduce its size and
dnl speed dynamic linking of applications. This currently is only supported
-dnl on gcc >= 4.0
+dnl on gcc >= 4.0 and SunPro C.
dnl
AC_MSG_CHECKING([whether to enable hidden symbols in the library])
AC_ARG_ENABLE(hidden-symbols,
-AC_HELP_STRING([--enable-hidden-symbols],[Hide internal symbols in library (gcc>=4)])
+AC_HELP_STRING([--enable-hidden-symbols],[Hide internal symbols in library])
AC_HELP_STRING([--disable-hidden-symbols],[Leave all symbols with default visibility in library]),
[ case "$enableval" in
no)
AC_MSG_RESULT(no)
;;
*)
+ AC_MSG_CHECKING([whether $CC supports it])
if test "$GCC" = yes ; then
- AC_MSG_CHECKING([whether $CC supports it])
if $CC --help --verbose 2>&1 | grep fvisibility= > /dev/null ; then
AC_MSG_RESULT(yes)
AC_DEFINE(CURL_HIDDEN_SYMBOLS, 1, [to enable hidden symbols])
AC_SUBST(CURL_HIDDEN_SYMBOLS)
+ AC_DEFINE(CURL_EXTERN_SYMBOL, [__attribute__ ((visibility ("default")))], [to make a symbol visible])
+ AC_SUBST(CURL_EXTERN_SYMBOL)
CFLAGS="$CFLAGS -fvisibility=hidden"
else
AC_MSG_RESULT(no)
fi
+
else
- AC_MSG_RESULT([no (not gcc)])
+ dnl Test for SunPro cc
+ if $CC 2>&1 | grep flags >/dev/null && $CC -flags | grep xldscope= >/dev/null ; then
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(CURL_HIDDEN_SYMBOLS, 1, [to enable hidden symbols])
+ AC_SUBST(CURL_HIDDEN_SYMBOLS)
+ AC_DEFINE(CURL_EXTERN_SYMBOL, [__global], [to make a symbol visible])
+ AC_SUBST(CURL_EXTERN_SYMBOL)
+ CFLAGS="$CFLAGS -xldscope=hidden"
+ else
+ AC_MSG_RESULT(no)
+ fi
fi
;;
esac ],
diff --git a/include/curl/curl.h b/include/curl/curl.h
index 1a118a36c6..b9b341deef 100644
--- a/include/curl/curl.h
+++ b/include/curl/curl.h
@@ -61,11 +61,12 @@ extern "C" {
#ifdef CURL_HIDDEN_SYMBOLS
/*
- * On gcc >= 4 if -fvisibility=hidden is given then this is used to cause
- * external definitions to be put into the shared library. It makes no
- * difference to applications whether this is set or not, only the library.
+ * This definition is used to make external definitions visibile in the
+ * shared library when symbols are hidden by default. It makes no
+ * difference when compiling applications whether this is set or not,
+ * only when compiling the library.
*/
-#define CURL_EXTERN __attribute__ ((visibility ("default")))
+#define CURL_EXTERN CURL_EXTERN_SYMBOL
#else
#define CURL_EXTERN
#endif
--
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