BuildSystem: initial Xcode5 support

Tested on MacOSX 10.8.5 w/ Xcode 5.0, 4.6.3 and 4.5.2, various builds,
including terminal Xcode, terminal no Xcode and Xcode IDE,
and permutations with/without mp4v2 and mkv.

- push defs for optional static libraries (OSL) to respective modules
- adjust make-driven linking to use OSL
- adjust Xcode-driven linking to use OSL via ld -filelist option
- add Xcode project group for all OSL
- set Xcode project to use clang compiler
- add osx 10.8 xcconfig files
- add "supplemental" xcconfig file where EXTERNAL_CONFIGURE may be used
  to specify configure-time options
- patch mp4v2 to compile with clang

Intructions for custom configure-options within Xcode IDE:

1. edit macosx/xcconfig/supplemental.xcconfig
2. save file (unsure how long it takes IDE to see change but it does)
3. build clean
4. build
5. never commit supplemental.xcconfig to repository - it is meant to
   exist but not effect the build on a clean checkout, and to be used
   only as a developer transient developer customization file.


git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@5800 b64f7644-9d1e-0410-96f1-a4d463321fa5

2 files changed, 23 insertions, 4 deletions

diff --git a/make/include/function.defs b/make/include/function.defs
index 5bf5aaa89..3be6a73e5 100644
--- a/make/include/function.defs
+++ b/make/include/function.defs
@@ -17,3 +17,8 @@ fn.ARGS = $(strip $(foreach a,$(2), \
 fn.VARS = $(foreach v,$($(1).vars),$(v)="$($(1).vars.$(v))")
 
 fn.TARGET = $(TARGET.$(2).prefix)$(1)$(TARGET.$(2).suffix)$(TARGET.$(2).ext)
+
+define fn.PRINTLN
+$(1)
+
+endef
diff --git a/make/xcodemake b/make/xcodemake
index a5950811b..f3aa4e6ae 100755
--- a/make/xcodemake
+++ b/make/xcodemake
@@ -106,15 +106,21 @@ if [ -n "$reconfigure" ]; then
         driver="--xcode-driver=$EXTERNAL_DRIVER"
     fi
 
+    ## determine which compiler to use based on Xcode environment (project).
     case "$GCC_VERSION" in
     com.apple.compilers.llvmgcc42)
-        gcc="--gcc=$DEVELOPER_BIN_DIR/llvm-gcc-4.2"
+        gcc="--gcc=`$DEVELOPER_BIN_DIR/xcodebuild -find-executable llvm-gcc-4.2`"
         ;;
     com.apple.compilers.llvm.clang.1_0)
-        gcc="--gcc=$DEVELOPER_BIN_DIR/clang"
+        gcc="--gcc=`$DEVELOPER_BIN_DIR/xcodebuild -find-executable clang`"
         ;;
     *)
-        gcc=
+        echo "*********************************************************************"
+        echo "***"
+        echo "*** ERROR: unexpected value for GCC_VERSION: $GCC_VERSION"
+        echo "***"
+        echo "*********************************************************************"
+        exit 1
         ;;
     esac
 
@@ -145,6 +151,14 @@ if [ -n "$reconfigure" ]; then
         minver=
     fi
 
+    ## pickup user setting from Xcode IDE and avoid recursion
+    if [ -n "$EXTERNAL_CONFIGURE" ]; then
+        extconf="$EXTERNAL_CONFIGURE"
+    else
+        extconf=
+    fi
+    EXTERNAL_CONFIGURE=
+
     ## invoke configure with (hidden) option which indicates conf performed by xcode
     (set -ex; $EXTERNAL_SRC/configure --force \
         $EXTERNAL_CONF_ARGS \
@@ -152,7 +166,7 @@ if [ -n "$reconfigure" ]; then
         $driver \
         --xcode-symroot="$SYMROOT" \
         --xcode-config="$EXTERNAL_XCCONFIG" \
-        $gcc $arch $debug $sysroot $minver)
+        $gcc $arch $debug $sysroot $minver $extconf)
     [ $? -ne 0 ] && exit 1
 fi