Remove an object from a static library

rmobj.sh

#!/bin/sh

# Remove an object from a static library.


LIB_SRC=${1}
OBJ=${2}


if [ -z ${OBJ} ]; then
	echo "Usage: $0 source.a target.o"
	exit 0
fi

if [ ! -f ${LIB_SRC} ]; then
	echo "File ${LIB_SRC} not found"
	exit 1
fi

EXTRACT_FAT(){
	SUBS=""
	for ARCH in `echo $LIB_INFO | sed -n -e 's/Architectures in the fat file:.*are: \(.*\)/\1/p'`; do
		SUB=${1}_${ARCH}.a
		lipo -thin ${ARCH} ${1} -output ${SUB}
		EXTRACT ${SUB} ${2}
		SUBS="${SUBS} ${SUB}"
	done

	lipo -create ${SUBS} -output ${1}
	rm ${SUBS}
}

EXTRACT(){
	ar -d ${1} ${2}
}

LIB_INFO=`lipo -info ${LIB_SRC}`
if [ `echo $LIB_INFO | grep -c "Architectures in the fat file" ` -gt 0 ]; then
  	EXTRACT_FAT ${LIB_SRC} ${OBJ}
else
  	EXTRACT ${LIB_SRC} ${OBJ}
fi