With iOS SDK 8 I could locate lipo util with following code:
IPHONE_OS_PLATFORM_PATH = $(shell xcrun --sdk iphoneos --show-sdk-platform-path)
ARM_DEV_DIR = $(IPHONE_OS_PLATFORM_PATH)/Developer/usr/bin
And run like this (Boost library example):
$(ARM_DEV_DIR)/lipo -create $(foreach arch,$(ARM_ARCHITECTURES),$(IPHONE_BUILD_DIR)/$(arch)/libboost.a) $(foreach arch,$(SIM_ARCHITECTURES),$(IPHONESIM_BUILD_DIR)/$(arch)/libboost.a) -o $(IOS_LIBBOOST)
Now there is no lipo in that location. How to get location?
Update #1
Same thing with ar. Looks like they where removed from iOS SDK and available only as OSX versions in /opt/local/bin.
:; xcrun --sdk iphoneos -f lipo
/Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/lipo
:; xcrun --sdk iphoneos -f ar
/Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ar