build-emacs

#!/bin/sh


set -e

ROOT_DIR="`pwd`"
BUILD_DIR=/tmp/emacs-build
SRC_DIR=emacs

cd ${SRC_DIR}

if test -n "$1"; then
	commit="$1"
else
	commit="origin/master"
	git pull
fi

REV=`git log -n 1 --no-color --pretty='format:%h' ${commit}`
TIMESTAMP=`git log -n 1 --no-color --pretty='format:%at' ${commit}`
PATCH_LIST=`find ${ROOT_DIR}/patches/ -name '*.patch'`

DAY=`date -u -r $TIMESTAMP +"%Y-%m-%d_%H-%M-%S"`
ORIG=`git show $commit:configure.ac | grep ^AC_INIT`
VNUM=`echo $ORIG | sed 's#^AC_INIT(\(.*\))#\1#; s/ //g' | cut -f2 -d,`
VNUM_ONLY=$(echo "$VNUM" | sed -e 's,\[,,g' -e 's,\],,g')
VERS="$DAY Git $REV"
DESCR="Emacs_Cocoa_${VNUM_ONLY}_${DAY}_Git_${REV}"
NCPU=$(getconf _NPROCESSORS_ONLN)

# Use Homebrew libxml pkgconfig
export PKG_CONFIG_PATH=../pkgconfig

CFLAGS="${CFLAGS} -pipe -march=nocona"
export CC=gcc
export CFLAGS



function cleanup_build_dir() {
	rm -rf ${BUILD_DIR}
}

function initialize_build_dir() {
	if test -e ${BUILD_DIR}/configure.ac; then
		return
	fi
	mkdir ${BUILD_DIR}
	git archive --format tar $commit | tar -C ${BUILD_DIR} -xvf -


	cd ${BUILD_DIR}
	rsync -aE ${ROOT_DIR}/site-lisp lisp
	
	sed -e "s/@@GIT_COMMIT@@/$REV/" -i '' lisp/site-lisp/early-site-start.el

	for f in ${PATCH_LIST}; do
		echo "Applying patch `basename $f`"
		patch -p1 -i $f
	done
}

function build_bootstrap_emacs() {
	if test -e ${BUILD_DIR}/configure.ac; then
		return
	fi

	cd ${BUILD_DIR}
	#autogen/copy_autogen
	./autogen.sh

	for f in $STRINGS; do
		sed -e "s/@version@/@version@ $VERS/" -i '' $f
	done


	./configure \
		--build=x86_64-apple-darwin \
		--without-dbus \
		--with-imagemagick \
		--with-ns

	make bootstrap -j$NCPU || exit 1 && make install -j$NCPU
}

function build_emacs() {
	make -j$NCPU || exit 1 && make install -j$NCPU
}

function build_pkg_dir() {
	cd ${BUILD_DIR}
	rsync -aE nextstep/Emacs.app _out
	rsync -aE ${ROOT_DIR}/emacs-dmg/* _out
	rsync -aE ${ROOT_DIR}/emacs/src  _out/Emacs.app/Contents/Resources/
	mkdir -p dir _out/Emacs.app/Contents/Resources/patches
	cp ${PATCH_LIST} _out/Emacs.app/Contents/Resources/patches
	rsync -aE ${ROOT_DIR}/bin/*  _out/Emacs.app/Contents/MacOS/bin/


	
	Rez -o "_out/More.../Alternative Icon" _out/icon.r
	rm _out/icon.r

	# Set the finder info bit that says the file has a custom icon.
	xattr -x -w com.apple.FinderInfo "00 00 00 00 00 00 00 00 04 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00" "_out/More.../Alternative Icon"

	mv _out/dot-DS_Store _out/.DS_Store
	SetFile -a Vc _out/background.*

}

function fix_dynlib() {
	local f=$1
	local indent="$2"
	local loader_path="$3"
	local target
	local lib

	local rpath=$(otool -l $f | grep RPATH -A2 | awk '{if($1=="path"){print $2}}')

	echo "$indent* Examinating $f"
	
	for lib in $(otool -L $f  | grep -F '.dylib ' | grep -v '/usr/lib/' |\
		grep -v '[[:space:]]\+@executable_path/' |\
		sed -n 's/^[[:space:]]*\(.*\) (.*/\1/p' | uniq); do
		target="_out/Emacs.app/Contents/Resources/lib/$(basename $lib)"
		if ! test -e "$target"; then
			resolved_lib=$(echo $lib | sed "s,@rpath,$rpath,")
			if test -n "$loader_path"; then
				resolved_lib=$(echo $resolved_lib | sed "s,@loader_path,$loader_path,")
			fi
			echo "$indent  - copying $lib ($resolved_lib)"
			cp "$resolved_lib" "$target"
			chmod 644 "$target"
			install_name_tool -id \
				@executable_path/../Resources/lib/$(basename $lib) \
				"$target"
			fix_dynlib "$target" "  $indent" $(dirname $resolved_lib)
		fi
		echo "$indent  - fixing $(basename $lib)"
		install_name_tool -change $lib \
			@executable_path/../Resources/lib/$(basename $lib) $f
	done
}

function fix_libs() {
	cd ${BUILD_DIR}
	mkdir -p _out/Emacs.app/Contents/Resources/lib
	for f in `find  _out/Emacs.app/Contents/MacOS/ -type f`; do
		fix_dynlib $f
	done

}

function build_dmg() {
	cd ${BUILD_DIR}
	rm -f ../tmp.dmg
	hdiutil makehybrid -hfs -hfs-volume-name "$DESCR" -hfs-openfolder _out _out -o ../tmp.dmg
	hdiutil convert -format UDZO ../tmp.dmg -o "${ROOT_DIR}/${DESCR}.dmg"
	rm -rf tmp.dmg
}


initialize_build_dir
build_bootstrap_emacs
build_emacs
build_pkg_dir
fix_libs
build_dmg
exit