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Bug 4075

Summary: configury adds Metal.framework to linkage even if it is not available
Product: SDL Reporter: Ozkan Sezer <sezeroz>
Component: buildAssignee: Sam Lantinga <slouken>
Status: RESOLVED FIXED QA Contact: Sam Lantinga <slouken>
Severity: normal    
Priority: P2    
Version: HG 2.0   
Hardware: All   
OS: Mac OS X (All)   

Description Ozkan Sezer 2018-02-10 21:47:05 UTC 
Configury adds Metal.framework to linkage even if it is not available.
My solution is setting enable_render_metal to no when Metal.framework
is not found, i.e. like the following:

diff --git a/configure.in b/configure.in
--- a/configure.in
+++ b/configure.in
@@ -2086,7 +2086,7 @@
         ],[
         ],[
         have_metal=yes
-        ])
+        ],[enable_render_metal=no])
         CFLAGS="$save_CFLAGS"
         AC_MSG_RESULT($have_metal)
         if test x$have_metal = xyes; then
diff --git a/configure b/configure
--- a/configure
+++ b/configure
@@ -21303,6 +21303,8 @@
 
         have_metal=yes
 
+else
+  enable_render_metal=no
 fi
 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
         CFLAGS="$save_CFLAGS"
Comment 1 Sam Lantinga 2018-02-12 01:26:46 UTC 
I did basically the same thing slightly more clear to the novice autoconf user.
https://hg.libsdl.org/SDL/rev/2eff89e82b60

Thanks!