curl: Backport a fix for a build issue

mkhelp: generate code for --disable-manual as well

This allows configure --disable-manual to run and build without having
to regenerate the src/tool_hugehelp.c file which otherwise is necessary
since we ship tarballs with that file present.

(From OE-Core rev: 544a96255203a6779d1f0022d003c6680f330511)

Signed-off-by: Tudor Florea <tudor.florea@enea.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-support/curl/curl/generate_code_for_disable_manual.patch

@@ -0,0 +1,38 @@
+Upsteam-Status Backport [fixed in 7.37.0]
+commit 38d582ff541353d738858299d4a2b78bafac03ed
+Author: Daniel Stenberg <daniel@haxx.se>
+Date:   Wed Mar 26 13:22:10 2014 +0100
+
+    mkhelp: generate code for --disable-manual as well
+    
+    This allows configure --disable-manual to run and build without having
+    to regenerate the src/tool_hugehelp.c file which otherwise is necessary
+    since we ship tarballs with that file present.
+    
+    Reported-by: Remi Gacogne
+    Bug: http://curl.haxx.se/bug/view.cgi?id=1350
+
+diff --git a/src/mkhelp.pl b/src/mkhelp.pl
+index 444b669..7ed86f7 100644
+--- a/src/mkhelp.pl
++++ b/src/mkhelp.pl
+@@ -6,7 +6,7 @@
+ #                            | (__| |_| |  _ <| |___
+ #                             \___|\___/|_| \_\_____|
+ #
+-# Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al.
++# Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al.
+ #
+ # This software is licensed as described in the file COPYING, which
+ # you should have received as part of this distribution. The terms
+@@ -256,6 +256,10 @@ foot();
+ 
+ sub foot {
+   print <<FOOT
++#else /* !USE_MANUAL */
++/* built-in manual is disabled, blank function */
++#include "tool_hugehelp.h"
++void hugehelp(void) {}
+ #endif /* USE_MANUAL */
+ FOOT
+   ;

meta/recipes-support/curl/curl_7.36.0.bb

@@ -11,6 +11,7 @@ DEPENDS_class-nativesdk = "nativesdk-zlib"
 
 SRC_URI = "http://curl.haxx.se/download/curl-${PV}.tar.bz2 \
            file://pkgconfig_fix.patch \
+           file://generate_code_for_disable_manual.patch \
 "
 
 # curl likes to set -g0 in CFLAGS, so we stop it