From 5fcc4332d62feb5ab33e2d405388158ae1e9a44d Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Mon, 20 Sep 2010 23:20:36 +0200
Subject: [PATCH] configure: don't enable RTMP if the lib detect fails

librtmp is often statically linked and using sub dependencies like
OpenSSL, so we need to make sure we can actually link with it properly
before enabling it. Otherwise we easily end up trying to link with a
RTMP lib that fails.
---
 configure.ac | 27 ++++++++++++++-------------
 1 file changed, 14 insertions(+), 13 deletions(-)

diff --git a/configure.ac b/configure.ac
index eaf57f9d3..7c170cf20 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2065,6 +2065,7 @@ if test X"$OPT_LIBRTMP" != Xno; then
     ;;
   off)
     dnl no --with-librtmp option given, just check default places
+    LIB_RTMP="-lrtmp"
     ;;
   *)
     dnl use the given --with-librtmp spot
@@ -2083,13 +2084,19 @@ if test X"$OPT_LIBRTMP" != Xno; then
   CPPFLAGS="$CPPFLAGS $CPP_RTMP"
   LIBS="$LIBS $LIB_RTMP"
 
-  AC_CHECK_LIB(rtmp, RTMP_Init)
-
-  AC_CHECK_HEADERS(librtmp/rtmp.h,
-    curl_rtmp_msg="enabled (librtmp)"
-    LIBRTMP_ENABLED=1
-    AC_DEFINE(USE_LIBRTMP, 1, [if librtmp is in use])
-    AC_SUBST(USE_LIBRTMP, [1])
+  AC_CHECK_LIB(rtmp, RTMP_Init,
+    [
+     AC_CHECK_HEADERS(librtmp/rtmp.h,
+        curl_rtmp_msg="enabled (librtmp)"
+        LIBRTMP_ENABLED=1
+        AC_DEFINE(USE_LIBRTMP, 1, [if librtmp is in use])
+        AC_SUBST(USE_LIBRTMP, [1])
+     )
+    ],
+      dnl not found, revert back to clean variables
+      LDFLAGS=$CLEANLDFLAGS
+      CPPFLAGS=$CLEANCPPFLAGS
+      LIBS=$CLEANLIBS
   )
 
   if test X"$OPT_LIBRTMP" != Xoff &&
@@ -2097,12 +2104,6 @@ if test X"$OPT_LIBRTMP" != Xno; then
     AC_MSG_ERROR([librtmp libs and/or directories were not found where specified!])
   fi
 
-  if test "$LIBRTMP_ENABLED" != "1"; then
-    dnl no librtmp, revert back to clean variables
-    LDFLAGS=$CLEANLDFLAGS
-    CPPFLAGS=$CLEANCPPFLAGS
-    LIBS=$CLEANLIBS
-  fi
 fi
 
 dnl **********************************************************************