Fix building universal binaries.

When building various libraries for Rockbox Utility make sure they use the same compiler as Qt. Pass Qt's CC instead of explicitly setting it. This fixes issues linking on OS X (with recent XCode building universal binaries requires the use of gcc-4-0 while the default one is 4.2).

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@23779 a1c6a512-1295-4272-9138-f99709370657
diff --git a/rbutil/mkamsboot/Makefile b/rbutil/mkamsboot/Makefile
index 3716360..70b79aa 100644
--- a/rbutil/mkamsboot/Makefile
+++ b/rbutil/mkamsboot/Makefile
@@ -6,7 +6,6 @@
 
 # We use the UCL code available in the Rockbox tools/ directory
 CFLAGS=-I../../tools/ucl/include -Wall -DVERSION=\"$(APPVERSION)\"
-CC = gcc
 
 ifndef V
 SILENT = @
diff --git a/rbutil/mktccboot/Makefile b/rbutil/mktccboot/Makefile
index 14c1843..6173765 100644
--- a/rbutil/mktccboot/Makefile
+++ b/rbutil/mktccboot/Makefile
@@ -11,8 +11,6 @@
 TOOLSDIR=../../tools
 CFLAGS := -O -g -W -Wall -Wshadow -pedantic -I$(TOOLSDIR)
 
-CC = gcc
-
 ifndef V
 SILENT = @
 endif
diff --git a/rbutil/rbutilqt/rbutilqt.pro b/rbutil/rbutilqt/rbutilqt.pro
index 90949fc..b09bd19 100644
--- a/rbutil/rbutilqt/rbutilqt.pro
+++ b/rbutil/rbutilqt/rbutilqt.pro
@@ -39,17 +39,15 @@
 }
 # custom rules for rockbox-specific libs
 !mac {
-rbspeex.commands = @$(MAKE) TARGET_DIR=$$MYBUILDDIR -C $$RBBASE_DIR/tools/rbspeex librbspeex.a
-libucl.commands = @$(MAKE) TARGET_DIR=$$MYBUILDDIR -C $$RBBASE_DIR/tools/ucl/src libucl.a
-libmkamsboot.commands = @$(MAKE) TARGET_DIR=$$MYBUILDDIR -C $$RBBASE_DIR/rbutil/mkamsboot libmkamsboot.a
-libmktccboot.commands = @$(MAKE) TARGET_DIR=$$MYBUILDDIR -C $$RBBASE_DIR/rbutil/mktccboot libmktccboot.a
+    RBLIBPOSTFIX = .a
 }
 mac {
-rbspeex.commands = @$(MAKE) TARGET_DIR=$$MYBUILDDIR -C $$RBBASE_DIR/tools/rbspeex librbspeex-universal
-libucl.commands = @$(MAKE) TARGET_DIR=$$MYBUILDDIR -C $$RBBASE_DIR/tools/ucl/src libucl-universal
-libmkamsboot.commands = @$(MAKE) TARGET_DIR=$$MYBUILDDIR -C $$RBBASE_DIR/rbutil/mkamsboot libmkamsboot-universal
-libmktccboot.commands = @$(MAKE) TARGET_DIR=$$MYBUILDDIR -C $$RBBASE_DIR/rbutil/mktccboot libmktccboot-universal
+    RBLIBPOSTFIX = -universal
 }
+rbspeex.commands = @$(MAKE) TARGET_DIR=$$MYBUILDDIR -C $$RBBASE_DIR/tools/rbspeex librbspeex$$RBLIBPOSTFIX CC=\"$$QMAKE_CC\"
+libucl.commands = @$(MAKE) TARGET_DIR=$$MYBUILDDIR -C $$RBBASE_DIR/tools/ucl/src libucl$$RBLIBPOSTFIX CC=\"$$QMAKE_CC\"
+libmkamsboot.commands = @$(MAKE) TARGET_DIR=$$MYBUILDDIR -C $$RBBASE_DIR/rbutil/mkamsboot libmkamsboot$$RBLIBPOSTFIX CC=\"$$QMAKE_CC\"
+libmktccboot.commands = @$(MAKE) TARGET_DIR=$$MYBUILDDIR -C $$RBBASE_DIR/rbutil/mktccboot libmktccboot$$RBLIBPOSTFIX CC=\"$$QMAKE_CC\"
 QMAKE_EXTRA_TARGETS += rbspeex libucl libmkamsboot libmktccboot
 PRE_TARGETDEPS += rbspeex libucl libmkamsboot libmktccboot
 
@@ -271,7 +269,7 @@
     QMAKE_LFLAGS_PPC=-mmacosx-version-min=10.4 -arch ppc
     QMAKE_LFLAGS_X86=-mmacosx-version-min=10.4 -arch i386
     CONFIG+=x86 ppc
-    LIBS += -L/usr/local/lib -framework IOKit
+    LIBS += -L/usr/local/lib -framework IOKit -lz
     INCLUDEPATH += /usr/local/include
     QMAKE_INFO_PLIST = Info.plist
     RC_FILE = icons/rbutilqt.icns
diff --git a/tools/rbspeex/Makefile b/tools/rbspeex/Makefile
index 87ce08f..6385c8a 100644
--- a/tools/rbspeex/Makefile
+++ b/tools/rbspeex/Makefile
@@ -22,10 +22,6 @@
 ifeq ($(findstring CYGWIN,$(shell uname)),CYGWIN)
 CFLAGS+=-mno-cygwin
 endif
-# on mingw32, make sure CC is set to gcc
-ifeq ($(findstring MINGW,$(shell uname)),MINGW)
-CC = gcc
-endif
 
 ifdef RBARCH
 CFLAGS += -arch $(RBARCH)
diff --git a/tools/ucl/src/Makefile b/tools/ucl/src/Makefile
index 14ca1f3..018c29a 100644
--- a/tools/ucl/src/Makefile
+++ b/tools/ucl/src/Makefile
@@ -7,7 +7,6 @@
 # $Id$
 #
 CFLAGS = -I../include
-CC = gcc
 
 ifndef V
 SILENT = @