[FFmpeg-cvslog] build: simplify enabling of compat objects

[Mans Rullgard]

ffmpeg | branch: master | Mans Rullgard <mans at mansr.com> | Sun Oct 14 17:56:00 2012 +0100| [84e65c763d8fd09afbfd9743174ad4a81d597783] | committer: Mans Rullgard

build: simplify enabling of compat objects

Add a configure function to pull in a compat object and set up
redirects in one operation.  This avoids duplicating conditions
across configure and makefiles.

Signed-off-by: Mans Rullgard <mans at mansr.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=84e65c763d8fd09afbfd9743174ad4a81d597783
---

 configure          |   15 +++++++++++----
 libavutil/Makefile |    3 +--
 2 files changed, 12 insertions(+), 6 deletions(-)

diff --git a/configure b/configure
index e6b2a31..5240a7c 100755
--- a/configure
+++ b/configure
@@ -641,6 +641,12 @@ add_host_ldflags(){
     append host_ldflags $($host_ldflags_filter "$@")
 }
 
+add_compat(){
+    append compat_objs $1
+    shift
+    map 'add_cppflags -D$v' "$@"
+}
+
 check_cmd(){
     log "$@"
     "$@" >> $logfile 2>&1
@@ -2906,10 +2912,10 @@ elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
     libc_type=newlib
 elif check_func_headers stdlib.h _get_doserrno; then
     libc_type=msvcrt
-    add_cflags -Dstrtod=avpriv_strtod
-    add_cflags -Dsnprintf=avpriv_snprintf   \
-               -D_snprintf=avpriv_snprintf  \
-               -Dvsnprintf=avpriv_vsnprintf
+    add_compat strtod.o strtod=avpriv_strtod
+    add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
+                                 _snprintf=avpriv_snprintf  \
+                                 vsnprintf=avpriv_vsnprintf
 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
     libc_type=klibc
 fi
@@ -3753,6 +3759,7 @@ CFLAGS-avplay=$sdl_cflags
 ZLIB=$($ldflags_filter -lz)
 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
 EXTRALIBS=$extralibs
+COMPAT_OBJS=$compat_objs
 INSTALL=install
 LIBTARGET=${LIBTARGET}
 SLIBNAME=${SLIBNAME}
diff --git a/libavutil/Makefile b/libavutil/Makefile
index e2b84e0..a85d3ae 100644
--- a/libavutil/Makefile
+++ b/libavutil/Makefile
@@ -88,8 +88,7 @@ OBJS = adler32.o                                                        \
        utils.o                                                          \
        xtea.o                                                           \
 
-OBJS-$(HAVE_MSVCRT) += ../compat/msvcrt/snprintf.o                      \
-                       ../compat/strtod.o
+OBJS += $(COMPAT_OBJS:%=../compat/%)
 
 SKIPHEADERS          = old_pix_fmts.h