File libssh2-visbility.patch of Package libssh2_org
diff --git a/configure.ac b/configure.ac
index aeba90e..a1dbaf6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -162,6 +162,45 @@ AC_HELP_STRING([--disable-debug],[Disable debug options]),
AC_MSG_RESULT(no)
)
+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 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])
+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
+ if $CC --help --verbose 2>&1 | grep fvisibility= > /dev/null ; then
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(LIBSSH2_API, [__attribute__ ((visibility ("default")))], [to make a symbol visible])
+ CFLAGS="$CFLAGS -fvisibility=hidden"
+ else
+ AC_MSG_RESULT(no)
+ fi
+
+ else
+ dnl Test for SunPro cc
+ if $CC 2>&1 | grep flags >/dev/null && $CC -flags | grep xldscope= >/dev/null ; then
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(LIBSSH2_API, [__global], [to make a symbol visible])
+ CFLAGS="$CFLAGS -xldscope=hidden"
+ else
+ AC_MSG_RESULT(no)
+ fi
+ fi
+ ;;
+ esac ],
+ AC_MSG_RESULT(no)
+)
+
# Checks for header files.
# AC_HEADER_STDC
AC_CHECK_HEADERS([errno.h fcntl.h stdio.h stdlib.h unistd.h sys/uio.h])