[FFmpeg-cvslog] r19620 - trunk/configure

[mru]

Author: mru
Date: Mon Aug 10 19:25:46 2009
New Revision: 19620

Log:
Fix dependency generation with ccache/gcc

When running behind ccache, the output from -MMD is corrupted unless
we also use the -MF and -MT flags.

Since ccache is difficult to detect and gcc 2.x doesn't support the
-MF and -MT flags, we always use the old dependency generation method
when gcc 2.x is detected.

Modified:
   trunk/configure

Modified: trunk/configure
==============================================================================
--- trunk/configure	Mon Aug 10 19:25:42 2009	(r19619)
+++ trunk/configure	Mon Aug 10 19:25:46 2009	(r19620)
@@ -1510,8 +1510,10 @@ filter_asflags=echo
 
 if   $cc -v 2>&1 | grep -qi ^gcc; then
     cc_type=gcc
-    CC_DEPFLAGS='-MMD'
-    AS_DEPFLAGS='-MMD'
+    if ! $cc -dumpversion | grep -q '^2\.'; then
+        CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
+        AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
+    fi
 elif $cc --version 2>/dev/null | grep -q Intel; then
     cc_type=icc
     CC_DEPFLAGS='-MMD'