[Ipsec-tools-devel] [patch 7/7] ocross-compiling: penssl-requires-zlib

[<zil...@ge...>]

Check if linking -lcrypto -lssl requires -lz specified explicetely.
If -lz is needed, add '-L$(path_to_zlib) -lz' to CRYPTO_EXTRA variable.

---

 ipsec-tools-swoop/configure.ac |   33 ++++++++++++++++++++++++++++++---
 1 files changed, 30 insertions(+), 3 deletions(-)

diff -puN configure.ac~openssl-requires-zlib configure.ac
--- ipsec-tools/configure.ac~openssl-requires-zlib	2005-03-29 10:38:09.000000000 +0300
+++ ipsec-tools-swoop/configure.ac	2005-03-29 10:38:09.000000000 +0300
@@ -177,9 +177,7 @@ AC_ARG_WITH(zlib,
 AC_MSG_RESULT(${zlib-default})
 
 if test "x$zlib" != "x"; then
-# todo AC_TRY_LINK ...
-	LIBS="$LIBS -L $zlib"
-	echo "\$LIBS='$LIBS' ..."
+	ZLIB_PATH="-L$zlib"
 fi
 
 
@@ -206,6 +204,35 @@ AC_TRY_COMPILE(
 AC_MSG_ERROR([OpenSSL version must be 0.9.6 or higher. Aborting.])
 ])
 
+# check if openssl libraries require zlib
+saved_LDFLAGS="$LDFLAGS"
+saved_LIBS="$LIBS"
+
+LIBS="-lssl -lcrypto"
+LDFLAGS="-L$crypto_dir"
+AC_MSG_CHECKING(OpenSSL needs zlib)
+AC_TRY_LINK([
+#include <openssl/ssl.h>
+],
+[
+SSL_library_init();
+],
+[
+	AC_MSG_RESULT([no])
+],
+[
+	if test "x$zlib" = "x"; then
+		EXTRA_CRYPTO="$EXTRA_CRYPTO -lz"
+	else
+		EXTRA_CRYPTO="$EXTRA_CRYPTO -lz -L$zlib"
+	fi
+	AC_MSG_RESULT([yes])
+])
+
+LDFLAGS="$saved_LDFLAGS"
+LIBS="$saved_LIBS"
+
+
 AC_CHECK_HEADERS(openssl/engine.h)
 
 # checking rijndael
_