From http://www.jwz.org/xscreensaver/xscreensaver-5.29.tar.gz

[xscreensaver] / OSX / Makefile

diff --git a/OSX/Makefile b/OSX/Makefile
index 28588ee8f613c19584b80cc1a9349a7cd31d09bc..6d808354b0631af6fe986b28ae767098f6dc21b6 100644 (file)
--- a/OSX/Makefile
+++ b/OSX/Makefile
@@ -1,21 +1,28 @@
-# XScreenSaver for MacOS X, Copyright (c) 2006-2013 by Jamie Zawinski.
+# XScreenSaver for MacOS X, Copyright (c) 2006-2014 by Jamie Zawinski.
 
-XCODEBUILD = /usr/bin/xcodebuild
-TARGETS    = -target "All Savers"
+# We have to use Xcode 5.0.2 in order to build savers that will run on
+# MacOS 10.6 and 10.7, because that's the latest version of Xcode that
+# ships with a version of clang that implements "-fobjc-gc".
+#
+XCODE_APP = /Applications/Xcode-5.0.2.app
+
+TARGETS    = All Savers
 ARCH       = -arch i386 -arch x86_64
 CERT       = 'Jamie Zawinski'
 CERT       = 'iPhone Developer: Jamie Zawinski (Y5M82TL69N)'
-THUMBDIR   = $(HOME)/www/xscreensaver/screenshots/
 PKGID     = org.jwz.xscreensaver
-SETFILE    = /Applications/Xcode.app/Contents/Developer/Tools/SetFile
+THUMBDIR   = $(HOME)/www/xscreensaver/screenshots/
+XCODEBUILD = $(XCODE_APP)/Contents/Developer/usr/bin/xcodebuild
+SETFILE    = $(XCODE_APP)/Contents/Developer/Tools/SetFile
 SETICON    = /usr/local/bin/seticon
+# seticon is from osxutils1.7.pkg
 
 default: release
 all: debug release
 
 clean:
        -rm -rf build
-#      cd ..; $(XCODEBUILD) $(TARGETS) clean
+#      cd ..; $(XCODEBUILD) -target "$(TARGETS)" clean
 
 distclean:
        -rm -f config.status config.cache config.log \
@@ -27,10 +34,10 @@ distdepend:: Sparkle.framework
 distdepend:: update_plist_version
 
 debug: distdepend
-       cd ..; $(XCODEBUILD) $(ARCH) $(TARGETS) -configuration Debug   build
+       cd ..; $(XCODEBUILD) $(ARCH) -target "$(TARGETS)" -configuration Debug   build
 
 release:: distdepend
-       cd ..; $(XCODEBUILD) $(ARCH) $(TARGETS) -configuration Release build
+       cd ..; $(XCODEBUILD) $(ARCH) -target "$(TARGETS)" -configuration Release build
 
 release:: check_versions
 release:: update_thumbs
@@ -66,6 +73,25 @@ check_versions:
   if [ "$$RESULT" = 0 ]; then echo "Versions match ($$V2)" ; fi ;      \
   exit $$RESULT
 
+
+check_gc:
+       @\
+  DIR="build/Release" ;                                                        \
+  RESULT=0 ;                                                           \
+  for S in "$$DIR/"*.saver ; do                                                \
+   SS=`echo "$$S" | sed -e 's@^.*/@@' -e 's/.saver$$//'` ;             \
+   D="$$S/Contents/MacOS/$$SS" ;                                       \
+   V=`otool -s __DATA __objc_imageinfo "$$D"                           \
+      | grep ' 00 02 00 '` ;                                           \
+   if [ -z "$$V" ]; then                                               \
+     echo "$$S does not have GC enabled" ;                             \
+     RESULT=1 ;                                                                \
+   fi ;                                                                        \
+  done ;                                                               \
+  if [ "$$RESULT" = 0 ]; then echo "GC enabled" ; fi ;                 \
+  exit $$RESULT
+
+
 update_thumbs::
        ./update-thumbnail.pl $(THUMBDIR) build/Release/*.saver
 
@@ -167,7 +193,7 @@ build/Release/installer.pkg: installer.rtf installer.xml installer.sh installer.
 
 
 # -format UDBZ saves 4% (~1.2 MB) over UDZO.
-dmg:: distdepend check_versions build/Release/installer.pkg
+dmg:: distdepend check_versions check_gc build/Release/installer.pkg
        @                                                                     \
   set -e ;                                                                   \
   SRC=../utils/version.h ;                                                   \