Add test_build target warnings not fatal otherwise

Summary:public
Adds test_build target to toplevel Makefile, which compiles
InferAnalyze, InferPrint, InferClang, and InferJava where warnings
listed in OCAML_FATAL_WARNINGS defined in infer/src/Makefile are fatal.
Other builds do not treat warnings as fatal.  The test build is
performed in parallel with the tests by scripts/test.sh.  This makes
refactoring and debugging easier, but prevents warnings from slipping
into the repo.

Also, make test target robust wrt parallel make.

Reviewed By: jvillard

Differential Revision: D2953085

fb-gh-sync-id: 5c0282a
shipit-source-id: 5c0282a

Makefile.in

@@ -78,26 +78,28 @@ endif
 clang: clang_plugin
 endif
 
+test_build:
+	$(MAKE) -C $(SRC_DIR) test_clean
+	$(MAKE) -C $(SRC_DIR) test_build
+
 buck_test: $(INFER_ANALYZERS)
 	NO_BUCKD=1 buck clean
 	NO_BUCKD=1 buck test $(TARGETS_TO_TEST)
+ifeq (@BUILD_JAVA_ANALYZERS@,yes)
+	NO_BUCKD=1 ./scripts/build_integration_tests.py
+endif
 
 buck_test_xml: $(INFER_ANALYZERS)
 	NO_BUCKD=1 buck clean
 	NO_BUCKD=1 buck test --xml test.xml $(TARGETS_TO_TEST)
-
-build_integration_tests: $(INFER_ANALYZERS)
+ifeq (@BUILD_JAVA_ANALYZERS@,yes)
 	NO_BUCKD=1 ./scripts/build_integration_tests.py
+endif
 
 test: buck_test
 
 test_xml: buck_test_xml
 
-ifeq (@BUILD_JAVA_ANALYZERS@,yes)
-test: build_integration_tests
-test_xml: build_integration_tests
-endif
-
 clean:
 	@rm -fv test.xml
 ifeq (@BUILD_C_ANALYZERS@,yes)
@@ -106,4 +108,4 @@ ifeq (@BUILD_C_ANALYZERS@,yes)
 endif
 	$(MAKE) -C $(INFER_DIR) clean
 
-.PHONY: all build_integration_tests clean clang clang_plugin clang_setup java test test_xml
+.PHONY: all build_integration_tests clean clang clang_plugin clang_setup java test test_xml test_build

infer/src/Makefile.in

@@ -39,6 +39,8 @@ ETC_DIR = $(INFER_DIR)/etc
 
 #### ocamlbuild options ####
 
+OCAML_FATAL_WARNINGS = +5+6+8+10+11+12+18+19+20+26+29+27+32+33+34+35+37+38+39
+
 OCAMLBUILD_OPTIONS = \
                      -classic-display \
                      -cflags -short-paths \
@@ -46,26 +48,7 @@ OCAMLBUILD_OPTIONS = \
                      -cflags -principal \
                      -cflags -strict-formats \
                      -cflags -strict-sequence \
-                     -cflags -w,@5 \
-                     -cflags -w,@6 \
-                     -cflags -w,@8 \
-                     -cflags -w,@10 \
-                     -cflags -w,@11 \
-                     -cflags -w,@12 \
-                     -cflags -w,@18 \
-                     -cflags -w,@19 \
-                     -cflags -w,@20 \
-                     -cflags -w,@26 \
-                     -cflags -w,@29 \
-                     -cflags -w,@27 \
-                     -cflags -w,@32 \
-                     -cflags -w,@33 \
-                     -cflags -w,@34 \
-                     -cflags -w,@35 \
-                     -cflags -w,@37 \
-                     -cflags -w,@38 \
-                     -cflags -w,@39 \
-                     -cflags -w,-40..42 \
+                     -cflags -w,$(OCAML_FATAL_WARNINGS)-4-9-40-41-42-45-48-50 \
                      -tag-line "<*{clang/clang_ast_*,backend/jsonbug_*}>: warn(-27-32-35-39)" \
                      -tag-line "not <**/{config,iList,utils}.*>: open(Utils)" \
                      -pkgs atdgen,extlib,str,unix,yojson,zip
@@ -199,6 +182,14 @@ byte: init $(INFERPRINT_ATDGEN_STUBS) $(CLANG_ATDGEN_STUBS) $(INFER_CLANG_FCP_MI
 	  $(INFERJAVA_MAIN).byte \
 	  $(INFERCLANG_MAIN).byte
 
+test_build: init $(INFERPRINT_ATDGEN_STUBS) $(CLANG_ATDGEN_STUBS) $(INFER_CLANG_FCP_MIRRORED_FILES)
+	$(OCAMLBUILD) -build-dir $(TEST_BUILD_DIR) $(JAVA_OCAMLBUILD_OPTIONS) \
+	  -cflags -warn-error,$(OCAML_FATAL_WARNINGS) \
+	  $(INFERANALYZE_MAIN).byte \
+	  $(INFERPRINT_MAIN).byte \
+	  $(INFERJAVA_MAIN).byte \
+	  $(INFERCLANG_MAIN).byte
+
 ifeq (@ENABLE_OCAML_ANNOT@,yes)
 java_annotations: build_java
 	rsync -a --include '*/' --include '*.annot' --exclude '*' $(JAVA_BUILD_DIR)/ $(ANNOT_DIR)/
@@ -300,6 +291,9 @@ $(INFERLLVM_BIN): build_llvm
 $(CHECKCOPYRIGHT_BIN): build_checkCopyright
 	$(COPY) $(SCRIPTS_BUILD_DIR)/$(CHECKCOPYRIGHT_MAIN).native $(CHECKCOPYRIGHT_BIN)
 
+test_clean:
+	$(REMOVE_DIR) $(TEST_BUILD_DIR)
+
 clean:
 	$(REMOVE_DIR) $(BUILD_DIR)
 ifeq (@ENABLE_OCAML_ANNOT@,yes)

scripts/test.sh

@@ -18,4 +18,4 @@ if [ "$1" == "--xml" ]; then
     XML="_xml"
 fi
 
-make -C "$INFER_DIR" test$XML
+make -j -C "$INFER_DIR" test_build test$XML