The new llvm compiler in Xcode 4 is able to create universal binaries
(using lipo underneath, most certainly).
So I tried to patch the PJSIP build system to work with the llvm compiler
and this is what I tried:
#
CC="/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/llvm-gcc-4.2"
ARCH="-arch armv6 -arch armv7" ./configure-iphone
# make dep
# make
The compiler has some limitations, that need some patching:
1.) for some strange reason it seems to require a space after -o
2.) -M and -E don't work together with multiple arch arguments
So I came up with this hack (quick and dirty):
$ svn diff
Index: pjsip-apps/build/Samples.mak
===================================================================
--- pjsip-apps/build/Samples.mak (revision 3557)
+++ pjsip-apps/build/Samples.mak (working copy)
@@ -45,13 +45,13 @@
all: $(BINDIR) $(OBJDIR) $(EXES)
$(BINDIR)/%$(HOST_EXE): $(OBJDIR)/%$(OBJEXT) $(PJ_LIB_FILES)
- $(LD) $(LDOUT)$(subst /,$(HOST_PSEP),$@) \
+ $(LD) $(LDOUT) $(subst /,$(HOST_PSEP),$@) \
$(subst /,$(HOST_PSEP),$<) \
$(_LDFLAGS)
$(OBJDIR)/%$(OBJEXT): $(SRCDIR)/%.c
$(CC) $(_CFLAGS) \
- $(CC_OUT)$(subst /,$(HOST_PSEP),$@) \
+ $(CC_OUT) $(subst /,$(HOST_PSEP),$@) \
$(subst /,$(HOST_PSEP),$<)
$(OBJDIR):
Index: configure-iphone
===================================================================
--- configure-iphone (revision 3557)
+++ configure-iphone (working copy)
@@ -106,7 +106,7 @@
export RANLIB="echo ranlib"
# Use gcc -E as preprocessor instead of cpp, since cpp will find the
# header files in standard /usr/include instead of in isysroot
-export CPP="${CC} ${ARCH} -E -isysroot ${SDKPATH}"
+#export CPP="${CC} ${ARCH} -E -isysroot ${SDKPATH}"
# Print settings
if test "1" = "1"; then
Index: build/rules.mak
===================================================================
--- build/rules.mak (revision 3557)
+++ build/rules.mak (working copy)
@@ -45,7 +45,7 @@
# When generating dependency (gcc -MM), ideally we use only either
# CFLAGS or CXXFLAGS (not both). But I just couldn't make if/ifeq to
work.
#
-DEPFLAGS = $($(APP)_CXXFLAGS) $($(APP)_CFLAGS)
+DEPFLAGS = $(subst armv6,armv7,$($(APP)_CXXFLAGS) $($(APP)_CFLAGS))
# Dependency file
DEP_FILE := .$(app)-$(TARGET_NAME).depend
@@ -84,7 +84,7 @@
$(EXE): $(OBJDIRS) $(OBJS) $($(APP)_EXTRA_DEP)
if test ! -d $(BINDIR); then $(subst @@,$(subst
/,$(HOST_PSEP),$(BINDIR)),$(HOST_MKDIR)); fi
- $(LD) $(LDOUT)$(subst /,$(HOST_PSEP),$(EXE)) \
+ $(LD) $(LDOUT) $(subst /,$(HOST_PSEP),$(EXE)) \
$(subst /,$(HOST_PSEP),$(OBJS)) $($(APP)_LDFLAGS)
$(OBJDIR)/$(app).o: $(OBJDIRS) $(OBJS)
@@ -117,22 +117,22 @@
$(OBJDIR)/%$(OBJEXT): $(SRCDIR)/%.m
$(CC) $($(APP)_CFLAGS) \
- $(CC_OUT)$(subst /,$(HOST_PSEP),$@) \
+ $(CC_OUT) $(subst /,$(HOST_PSEP),$@) \
$(subst /,$(HOST_PSEP),$<)
$(OBJDIR)/%$(OBJEXT): $(SRCDIR)/%.c
$(CC) $($(APP)_CFLAGS) \
- $(CC_OUT)$(subst /,$(HOST_PSEP),$@) \
+ $(CC_OUT) $(subst /,$(HOST_PSEP),$@) \
$(subst /,$(HOST_PSEP),$<)
$(OBJDIR)/%$(OBJEXT): $(SRCDIR)/%.S
$(CC) $($(APP)_CFLAGS) \
- $(CC_OUT)$(subst /,$(HOST_PSEP),$@) \
+ $(CC_OUT) $(subst /,$(HOST_PSEP),$@) \
$(subst /,$(HOST_PSEP),$<)
$(OBJDIR)/%$(OBJEXT): $(SRCDIR)/%.cpp
$(CC) $($(APP)_CXXFLAGS) \
- $(CC_OUT)$(subst /,$(HOST_PSEP),$@) \
+ $(CC_OUT) $(subst /,$(HOST_PSEP),$@) \
$(subst /,$(HOST_PSEP),$<)
$(OBJDIRS):
That works for the moment, but is nothing to check in. I don't know what
this -E line in configure-iphone is good for (is there any C++ in PJSIP?)
and the $(subst) thing in rules.mak is, well, the definition of a hack in
itself. $DEPFLAGS is used together with -M, which doesn't work with "-arch
armv6 -arch armv7", but is happy with "-arch armv7 -arch armv7". ;)
Maybe someone is able to clear that up a bit and make something useful out
of it?
Regards,
Sebastian.
pjsip-bounces at lists.pjsip.org schrieb am 24.06.2011 11:21:05:
| You should compile separately for both arch armv6 and armv7 and
| combine libraries with tool lipo
