Makefile for building cling from source. Works on win32 cygwin, need to modify the exename variable to make it work on Linux

Makefile

cling-version := 45925
install-dir := $(shell pwd)/cling
exename := $(install-dir)/bin/cling.exe

.PHONY: all clean exe clang cling repl crepl cpprepl

all: exe

clean:
	rm ./lastKnownGood
	cd ./llvm && make clean
	cd ./llvm/tools/clang && make clean
	cd ./llvm/tools/cling && make clean
	rm -rf ./build

lastKnownGood:
	svn co --depth files -r $(cling-version) http://root.cern.ch/svn/root/trunk/interpreter/cling &&\
	cp ./cling/LastKnownGoodLLVMSVNRevision.txt ./lastKnownGood &&\
	rm -rf ./cling

llvm: lastKnownGood
	lkg=`cat lastKnownGood` &&\
	svn co -r "$$lkg"  http://llvm.org/svn/llvm-project/llvm/trunk $@

clang: llvm/tools/clang
llvm/tools/clang: | lastKnownGood
	lkg=`cat lastKnownGood` &&\
	cd ./llvm/tools && \
	svn co -r "$$lkg" http://llvm.org/svn/llvm-project/cfe/trunk clang

cling: llvm/tools/cling
llvm/tools/cling: | lastKnownGood
	cd ./llvm/tools && \
	svn co -r $(cling-version) http://root.cern.ch/svn/root/trunk/interpreter/cling/ && \
	cd ../ && \
	cat tools/cling/patches/*.diff | patch -p0

build:
	mkdir build

build/Makefile: llvm | clang cling build #phony targets and directories should be order-only
	cd ./build &&\
	../llvm/configure --prefix=$(install-dir) --enable-optimized --enable-targets=host-only CC=gcc CXX=g++ #--build=x86_64-w64-mingw32 --target=x86_64-w64-mingw32

exe: $(exename)

$(exename): build/Makefile
	cd ./build &&\
	$(MAKE) && $(MAKE) install

repl: cpprepl

crepl: exe 
	$(exename)

cpprepl: exe
	$(exename) -I /usr/lib/gcc/i686-pc-cygwin/4.8.2/include/c++/ -I /usr/lib/gcc/i686-pc-cygwin/4.8.2/include/c++/i686-pc-cygwin/

cpp11repl: exe
	$(exename) -Wc++11-extensions -std=c++11 -I /usr/lib/gcc/i686-pc-cygwin/4.8.2/include/c++/ -I /usr/lib/gcc/i686-pc-cygwin/4.8.2/include/c++/i686-pc-cygwin/