VPATH = @srcdir@

LLVM_OPTIONS = \
  -D_GNU_SOURCE \
  -D__STDC_CONSTANT_MACROS \
  -D__STDC_FORMAT_MACROS \
  -D__STDC_LIMIT_MACROS \

PLUGIN_OPTIONS = \
  -shared \
  -fPIC

INCDIR = @srcdir@/..

# Strictly speaking we should use clang --version | awk 'FNR==1 {print $3}' here...
PLUGIN_INSTALL_DIR = /usr/lib64/clang/`llvm-config --version`/lib

PLUGIN_NAME = annobin-for-clang.so

all: $(PLUGIN_NAME)

$(PLUGIN_NAME): annobin.cpp
	clang++ $(LLVM_OPTIONS) $(PLUGIN_OPTIONS) -I$(INCDIR) $< -o $@

install: $(PLUGIN_NAME)
	install -Dpm0755 -t ${PLUGIN_INSTALL_DIR} $<

clean:
	rm -f $(PLUGIN_NAME) clang-plugin-test.out hello.o

CLANG=clang
READELF=readelf
PLUGIN = @abs_builddir@/$(PLUGIN_NAME)

PLUGIN_TEST_OPTIONS = \
   -D_FORTIFY_SOURCE=2 \
   -O2 \
   -g -grecord-gcc-switches \
   -fPIE \
    -Wall \
   -fsanitize=safe-stack \
   -fstack-protector-strong \
   -fcf-protection \
   -fsanitize=cfi-cast-strict 

check: @srcdir@/hello.c
	@ $(CLANG) -fplugin=$(PLUGIN) $(PLUGIN_TEST_OPTIONS) -c @srcdir@/hello.c
	@ $(READELF) --wide --notes hello.o > clang-plugin-test.out
	@ grep --silent -e "annobin built by clang version" clang-plugin-test.out
	@ grep --silent -e "running on clang version" clang-plugin-test.out
	@ grep --silent -e "sanitize_cfi" clang-plugin-test.out
	@ grep --silent -e "SpecLoadHarden" clang-plugin-test.out
	@ echo "PASS Clang plugin test"