# Copyright (c) 2013 - present Facebook, Inc.
# All rights reserved.
#
# This source code is licensed under the BSD style license found in the
# LICENSE file in the root directory of this source tree. An additional grant
# of patent rights can be found in the PATENTS file in the same directory.

ROOT_DIR = ../..
include $(ROOT_DIR)/Makefile.config

INFER_MAJOR = @INFER_MAJOR@
INFER_MINOR = @INFER_MINOR@
INFER_PATCH = @INFER_PATCH@
INFER_IS_RELEASE = @INFER_IS_RELEASE@

REMOVE = @rm -vf
REMOVE_DIR = @rm -rvf
COPY = cp -f -p
COPY_DIR = cp -rf
MKDIR = mkdir -p
LINK = ln -sf
ATDGEN = @ATDGEN@

OCAML_INCLUDE_DIR = $(shell ocamlc -where)

#### Global declarations ####

BUILD_DIR = $(INFER_DIR)/_build-infer
JAVA_BUILD_DIR = $(BUILD_DIR)/java
CLANG_BUILD_DIR = $(BUILD_DIR)/clang
LLVM_BUILD_DIR = $(BUILD_DIR)/llvm
SCRIPTS_BUILD_DIR = $(BUILD_DIR)/scripts
ANNOT_DIR = $(SRC_DIR)/_build
ETC_DIR = $(INFER_DIR)/etc

#### Infer includes declarations ####

ATDGEN_INCLUDE_DIR = @OCAML_PKG_PATH_atdgen@
BINIOU_INCLUDE_DIR = @OCAML_PKG_PATH_biniou@
EASYFORMAT_INCLUDE_DIR = @OCAML_PKG_PATH_easy_format@
EXTLIB_INCLUDE_DIR = @OCAML_PKG_PATH_extlib@
YOJSON_INCLUDE_DIR = @OCAML_PKG_PATH_yojson@
ZIP_INCLUDE_DIR = @OCAML_PKG_PATH_camlzip@

OCAML_INCLUDES = -I,$(EASYFORMAT_INCLUDE_DIR),-I,$(BINIOU_INCLUDE_DIR),-I,$(YOJSON_INCLUDE_DIR),-I,$(ATDGEN_INCLUDE_DIR),-I,$(EXTLIB_INCLUDE_DIR),-I,$(ZIP_INCLUDE_DIR)
OCAML_LIBS = unix str atdgen extLib zip
OCAML_MODS = easy_format bi_util bi_share bi_outbuf bi_inbuf bi_vint bi_io yojson ag_oj_run ag_ob_run ag_util

# backwards compatibility with OCaml version < 4.02.0
ifeq (@OCAML_HAS_NATIVE_BYTES@,no)
OCAML_INCLUDES := $(OCAML_INCLUDES),-I,@OCAML_PKG_PATH_bytes@
OCAML_LIBS += bytes
endif

OCAMLBUILD_ANNOT_OPTIONS =
ifeq (@ENABLE_OCAML_ANNOT@,yes)
OCAMLBUILD_ANNOT_OPTIONS = -cflags -annot
endif

OCAMLBUILD_BINANNOT_OPTIONS =
ifeq (@ENABLE_OCAML_BINANNOT@,yes)
OCAMLBUILD_BINANNOT_OPTIONS = -cflags -bin-annot
endif

OCAMLBUILD_OPTIONS = \
                     $(OCAMLBUILD_ANNOT_OPTIONS) \
                     $(OCAMLBUILD_BINANNOT_OPTIONS) \
                     -classic-display \
                     -cflags -warn-error,@5@8@10..12@20@26@39 \
                     -lflags $(OCAML_INCLUDES) \
                     -cflags $(OCAML_INCLUDES) \
                     $(addprefix -lib ,$(OCAML_LIBS)) \
                     $(addprefix -mod ,$(OCAML_MODS))

ifeq (@OCAMLC_HAS_SAFE_STRING@,yes)
OCAMLBUILD_OPTIONS += -cflags -safe-string
endif

#### Backend declarations ####

BACKEND_SOURCES = backend

INFERANALYZE_MAIN = $(BACKEND_SOURCES)/inferanalyze

#### Typeprop declarations ####

TYPEPROP_MAIN = $(BACKEND_SOURCES)/type_prop
TYPEPROP_BIN = $(BIN_DIR)/Typeprop

#### InferPrint declarations ####

INFERPRINT_ATDGEN_STUB_BASE = $(BACKEND_SOURCES)/jsonbug
INFERPRINT_ATDGEN_STUB_ATD = $(INFERPRINT_ATDGEN_STUB_BASE).atd
INFERPRINT_ATDGEN_SUFFIXES = _t.ml _t.mli _j.ml _j.mli
INFERPRINT_ATDGEN_STUBS = $(addprefix $(INFERPRINT_ATDGEN_STUB_BASE), $(INFERPRINT_ATDGEN_SUFFIXES))

INFERPRINT_MAIN = $(BACKEND_SOURCES)/inferprint

#### Java declarations ####

PTREES_INCLUDE_DIR = @OCAML_PKG_PATH_ptrees@
JAVALIB_INCLUDE_DIR = @OCAML_PKG_PATH_javalib@
SAWJA_INCLUDE_DIR = @OCAML_PKG_PATH_sawja@

JAVA_INCLUDES = -I,$(PTREES_INCLUDE_DIR),-I,$(JAVALIB_INCLUDE_DIR),-I,$(SAWJA_INCLUDE_DIR)
JAVA_LIBS = ptrees javalib sawja
JAVA_OCAMLBUID_OPTIONS = -lflags $(JAVA_INCLUDES) -cflags $(JAVA_INCLUDES) $(addprefix -lib ,$(JAVA_LIBS))

JAVA_SOURCES = java

INFERJAVA_MAIN = $(JAVA_SOURCES)/jMain

#### Clang declarations ####

CLANG_SOURCES = clang
INFERCLANG_MAIN = $(CLANG_SOURCES)/cMain

FCP_CLANG_OCAML_BUILD_DIR = $(FCP_CLANG_OCAML_DIR)/build

CLANG_PLUGIN_BINARIES = $(addprefix $(FCP_CLANG_OCAML_BUILD_DIR), \
                          clang_ast_converter clang_ast_named_decl_printer)

CLANG_AST_BASE_NAME = clang_ast
CLANG_ATDGEN_STUB_BASE = $(CLANG_SOURCES)/$(CLANG_AST_BASE_NAME)
CLANG_ATDGEN_STUB_ATD = $(FCP_CLANG_OCAML_BUILD_DIR)/$(CLANG_AST_BASE_NAME).atd
CLANG_ATDGEN_SUFFIXES = _t.ml _t.mli _b.ml _b.mli _j.ml _j.mli _v.ml _v.mli
CLANG_ATDGEN_STUBS = $(addprefix $(CLANG_ATDGEN_STUB_BASE), $(CLANG_ATDGEN_SUFFIXES))

FCP_CLANG_AST_PROJ = $(addprefix $(FCP_CLANG_OCAML_BUILD_DIR)/, \
                       clang_ast_proj.ml clang_ast_proj.mli)
FCP_CLANG_AST_MAIN = $(addprefix $(FCP_CLANG_OCAML_DIR)/, \
                       clang_ast_visit.ml clang_ast_main.ml)
FCP_FILES_TO_MIRROR = $(FCP_CLANG_AST_PROJ) $(FCP_CLANG_AST_MAIN)
INFER_CLANG_FCP_MIRRORED_FILES = $(addprefix $(CLANG_SOURCES)/, $(notdir $(FCP_FILES_TO_MIRROR)))

CLANG_BINIOU_DICT = $(ETC_DIR)/clang_ast.dict

#### LLVM declarations ####

LLVM_SOURCES = llvm
INFERLLVM_MAIN = $(LLVM_SOURCES)/lMain
INFERLLVM_BIN = $(BIN_DIR)/InferLLVM

#### scripts declarations ####

SCRIPT_SOURCES = scripts

CHECKCOPYRIGHT_BIN = $(SCRIPT_DIR)/checkCopyright
CHECKCOPYRIGHT_MAIN = $(SCRIPT_SOURCES)/checkCopyright

#### End of declarations ####

# Check whether .facebook file exists in a root directory.
# Based on that determine which code should be loaded
ifeq ($(wildcard $(ROOT_DIR)/.facebook),)
	EXTRA_DEPS = opensource
else
	EXTRA_DEPS = facebook
endif

DEPENDENCIES = $(BACKEND_SOURCES) checkers eradicate facebook/checkers facebook/checkers/graphql facebook/scripts harness $(EXTRA_DEPS)

OCAMLBUILD = ocamlbuild $(OCAMLBUILD_OPTIONS) -j 0 $(addprefix -I , $(DEPENDENCIES))

.PHONY: all java clang llvm checkCopyright build_java build_clang build_llvm build_checkCopyright \
        java_annotations clang_annotations llvm_annotations scripts_annotations \
        init version sanitize clean

all: java clang llvm checkCopyright

java: $(INFERJAVA_BIN)

clang: $(INFERCLANG_BIN) $(CLANG_BINIOU_DICT)

llvm: $(INFERLLVM_BIN)

checkCopyright: $(CHECKCOPYRIGHT_BIN)

build_java: init $(INFERPRINT_ATDGEN_STUBS)
	$(OCAMLBUILD) -build-dir $(JAVA_BUILD_DIR) $(JAVA_OCAMLBUID_OPTIONS) \
	  $(TYPEPROP_MAIN).native \
	  $(INFERANALYZE_MAIN).native \
	  $(INFERPRINT_MAIN).native \
	  $(INFERJAVA_MAIN).native

build_clang: init $(INFERPRINT_ATDGEN_STUBS) $(CLANG_ATDGEN_STUBS) $(INFER_CLANG_FCP_MIRRORED_FILES)
	$(OCAMLBUILD) -build-dir $(CLANG_BUILD_DIR) \
	  $(INFERANALYZE_MAIN).native \
	  $(INFERPRINT_MAIN).native \
	  $(INFERCLANG_MAIN).native

build_llvm:
	$(OCAMLBUILD) -build-dir $(LLVM_BUILD_DIR) -use-menhir $(INFERLLVM_MAIN).native

build_checkCopyright:
	$(OCAMLBUILD) -build-dir $(SCRIPTS_BUILD_DIR) -I $(SCRIPT_SOURCES) \
	  $(CHECKCOPYRIGHT_MAIN).native

ifeq (@ENABLE_OCAML_ANNOT@,yes)
java_annotations: build_java
	rsync -a --include '*/' --include '*.annot' --exclude '*' $(JAVA_BUILD_DIR)/ $(ANNOT_DIR)/

clang_annotations: build_clang
	rsync -a --include '*/' --include '*.annot' --exclude '*' $(CLANG_BUILD_DIR)/ $(ANNOT_DIR)/

llvm_annotations: build_llvm
	rsync -a --include '*/' --include '*.annot' --exclude '*' $(LLVM_BUILD_DIR)/ $(ANNOT_DIR)/

scripts_annotations: build_checkCopyright
	rsync -a --include '*/' --include '*.annot' --exclude '*' $(SCRIPTS_BUILD_DIR)/ $(ANNOT_DIR)/

java: java_annotations
clang: clang_annotations
llvm: llvm_annotations
checkCopyright: scripts_annotations
endif

define gen_atdgen_rules
# generate files using atdgen
# parameters:
#   1. the .atd file to generate .ml{,i} files from
#   2. the base name of .ml{,i} files
#   3. the type of files to generate: b, j, t, or v

$(2)_$(3).ml $(2)_$(3).mli: $(1)
	$(ATDGEN) -$(3) $$< -o $(2)

# the .ml depends on the corresponding .mli to avoid running atdgen
# twice during parallel builds
$(2)_$(3).ml: $(2)_$(3).mli
endef

$(foreach atd_type,j t,\
    $(eval \
        $(call gen_atdgen_rules,$(INFERPRINT_ATDGEN_STUB_ATD),$(INFERPRINT_ATDGEN_STUB_BASE),$(atd_type))))

# rebuild the artifacts of the AST files whenever they're upated in FCP
$(foreach atd_type,b j t v,\
    $(eval \
        $(call gen_atdgen_rules,$(CLANG_ATDGEN_STUB_ATD),$(CLANG_ATDGEN_STUB_BASE),$(atd_type))))


define mirror_fcp_file
$(CLANG_SOURCES)/$(notdir $(1)): $(1)
	@INSTALL@ -m 644 -C $$< $$@
endef

$(foreach file, $(FCP_FILES_TO_MIRROR), $(eval $(call mirror_fcp_file,$(file))))


$(CLANG_BINIOU_DICT): $(CLANG_ATDGEN_STUB_ATD)
# overapproximation of the words we need in the biniou dictionary
# the long litany of symbols is [:punct:] minus "_-'"
	tr -s '[*!"#\$%&\(\)\+,\\\.\/:;<=>\?@\[\\\\]^`\{|\}~[:space:]]' '\n' \
	  < $< \
	  | sort | uniq  \
	  > $@

init: sanitize version $(BUILD_DIR)

sanitize:
ifneq ($(wildcard $(BUILD_DIR)/sanitize.sh),)
	$(BUILD_DIR)/sanitize.sh
endif

version: $(BACKEND_SOURCES)/version.ml.in Makefile
	TMPFILE=$$(mktemp $(BACKEND_SOURCES)/version.ml.tmp.XXXX); \
	INFER_GIT_COMMIT=$$(git --work-tree=$(ROOT_DIR) --git-dir=$(ROOT_DIR)/.git rev-parse --short HEAD || printf "unknown"); \
	INFER_GIT_BRANCH=$$(git --work-tree=$(ROOT_DIR) --git-dir=$(ROOT_DIR)/.git rev-parse --abbrev-ref HEAD || printf "unknown"); \
	sed \
	  -e 's|@INFER_MAJOR[@]|$(INFER_MAJOR)|g' \
	  -e 's|@INFER_MINOR[@]|$(INFER_MINOR)|g' \
	  -e 's|@INFER_PATCH[@]|$(INFER_PATCH)|g' \
	  -e 's|@INFER_IS_RELEASE[@]|$(INFER_IS_RELEASE)|g' \
	  -e "s|@INFER_GIT_COMMIT[@]|$$INFER_GIT_COMMIT|g" \
	  -e "s|@INFER_GIT_BRANCH[@]|$$INFER_GIT_BRANCH|g" \
	  $< > "$$TMPFILE"; \
	@INSTALL@ -m 644 -C "$$TMPFILE" $(BACKEND_SOURCES)/version.ml; \
	rm -f "$$TMPFILE"

$(BUILD_DIR):
	$(MKDIR) $(BUILD_DIR)

$(INFERJAVA_BIN): build_java
	$(COPY) $(JAVA_BUILD_DIR)/$(TYPEPROP_MAIN).native $(TYPEPROP_BIN)
	$(COPY) $(JAVA_BUILD_DIR)/$(INFERANALYZE_MAIN).native $(INFERANALYZE_BIN)
	$(COPY) $(JAVA_BUILD_DIR)/$(INFERPRINT_MAIN).native $(INFERPRINT_BIN)
	$(COPY) $(JAVA_BUILD_DIR)/$(INFERJAVA_MAIN).native $(INFERJAVA_BIN)

$(INFERCLANG_BIN): build_clang
	$(COPY) $(CLANG_BUILD_DIR)/$(INFERANALYZE_MAIN).native $(INFERANALYZE_BIN)
	$(COPY) $(CLANG_BUILD_DIR)/$(INFERPRINT_MAIN).native $(INFERPRINT_BIN)
	$(COPY) $(CLANG_BUILD_DIR)/$(INFERCLANG_MAIN).native $(INFERCLANG_BIN)

$(INFERLLVM_BIN): build_llvm
	$(COPY) $(LLVM_BUILD_DIR)/$(INFERLLVM_MAIN).native $(INFERLLVM_BIN)

$(CHECKCOPYRIGHT_BIN): build_checkCopyright
	$(COPY) $(SCRIPTS_BUILD_DIR)/$(CHECKCOPYRIGHT_MAIN).native $(CHECKCOPYRIGHT_BIN)

clean:
	$(REMOVE_DIR) $(BUILD_DIR)
ifeq (@ENABLE_OCAML_ANNOT@,yes)
	$(REMOVE_DIR) $(ANNOT_DIR)
endif
	$(REMOVE) $(BACKEND_SOURCES)/version.ml
	$(REMOVE) $(BACKEND_SOURCES)/version.ml.tmp.*
	$(REMOVE) $(TYPEPROP_BIN) $(INFERANALYZE_BIN) $(INFERPRINT_BIN)
	$(REMOVE) $(INFERJAVA_BIN) $(INFERCLANG_BIN) $(INFERLLVM_BIN)
	$(REMOVE) $(CHECKCOPYRIGHT_BIN)
	$(REMOVE) $(CLANG_ATDGEN_STUBS)
	$(REMOVE) $(INFER_CLANG_FCP_MIRRORED_FILES)