X-Git-Url: https://git.xonotic.org/?p=xonotic%2Fgmqcc.git;a=blobdiff_plain;f=Makefile;h=f0b3cabfc15faad1eec6b6951e3a2cc3396599fa;hp=4f42a7fe7fa392b2d9e0d6679b5b710bbabbc1ac;hb=f971f89e1e239a74fd34f9f5369993b25d5432ed;hpb=fe3d8e44e6b6b153860af46a9c3b3d604e01bb9e

diff --git a/Makefile b/Makefile
index 4f42a7f..dc49416 100644
--- a/Makefile
+++ b/Makefile
@@ -1,107 +1,204 @@
-DESTDIR :=
-PREFIX  := /usr/local
-BINDIR  := $(PREFIX)/bin
-DATADIR := $(PREFIX)/share
-MANDIR  := $(DATADIR)/man
-
-UNAME  ?= $(shell uname)
-CYGWIN  = $(findstring CYGWIN,  $(UNAME))
-MINGW   = $(findstring MINGW32, $(UNAME))
-
-CC     ?= clang
-CFLAGS += -Wall -Wextra -I. -pedantic-errors
-#turn on tons of warnings if clang is present
-# but also turn off the STUPID ONES
-ifeq ($(CC), clang)
-	CFLAGS +=                         \
-		-Weverything                  \
-		-Wno-padded                   \
-		-Wno-format-nonliteral        \
-		-Wno-disabled-macro-expansion \
-		-Wno-conversion               \
-		-Wno-missing-prototypes       \
-		-Wno-float-equal              \
-		-Wno-cast-align
+# Compilation options:
+# * LTO       - Link time optimization       [default=0]
+# * ASAN      - Address sanitizer            [default=0]
+# * UBSAN     - Undefined behavior sanitizer [default=0]
+# * DEBUG     - Debug build                  [default=0]
+# * UNUSED    - Remove unused references     [default=1]
+# * SRCDIR    - Out of tree builds           [default=./]
+LTO ?= 0
+ASAN ?= 0
+UBSAN ?= 0
+DEBUG ?= 0
+UNUSED ?= 1
+SRCDIR ?= ./
+
+# Determine if we're building for Windows or not so we can set the right file
+# extensions for the binaries and exclude the testsuite because it doesn't build
+# for that platform.
+ifeq ($(OS),Windows_NT)
+	GMQCC := gmqcc.exe
+	QCVM := qcvm.exe
+else
+	GMQCC := gmqcc
+	QCVM := qcvm
+	TESTSUITE := testsuite
 endif
-ifeq ($(track), no)
-    CFLAGS += -DNOTRACK
+
+# C++ compiler
+CXX ?= clang++
+
+# Build artifact directories
+OBJDIR := .build/objs
+DEPDIR := .build/deps
+
+# Collect all the source files for GMQCC.
+GSRCS := ast.cpp
+GSRCS += code.cpp
+GSRCS += conout.cpp
+GSRCS += fold.cpp
+GSRCS += ftepp.cpp
+GSRCS += intrin.cpp
+GSRCS += ir.cpp
+GSRCS += lexer.cpp
+GSRCS += main.cpp
+GSRCS += opts.cpp
+GSRCS += parser.cpp
+GSRCS += stat.cpp
+GSRCS += utf8.cpp
+GSRCS += util.cpp
+
+# Collect all the source files for QCVM.
+QSRCS := exec.cpp
+QSRCS += stat.cpp
+QSRCS += util.cpp
+
+# Collect all the source files for TESTSUITE.
+TSRCS := conout.cpp
+TSRCS += opts.cpp
+TSRCS += stat.cpp
+TSRCS += test.cpp
+TSRCS += util.cpp
+
+#
+# Compilation flags
+#
+CXXFLAGS := -Wall
+CXXFLAGS += -Wextra
+CXXFLAGS += -Wno-parentheses
+CXXFLAGS += -Wno-class-memaccess
+CXXFLAGS += -Wno-implicit-fallthrough
+CXXFLAGS += -std=c++11
+
+# Disable some unneeded features.
+CXXFLAGS += -fno-exceptions
+CXXFLAGS += -fno-rtti
+CXXFLAGS += -fno-asynchronous-unwind-tables
+
+# Give each function and data it's own section so the linker can remove unused
+# references to each, producing smaller, tighter binaries.
+ifeq ($(UNUSED),1)
+	CXXFLAGS += -ffunction-sections
+	CXXFLAGS += -fdata-sections
 endif
 
-OBJ_D = util.o code.o ast.o ir.o conout.o ftepp.o opts.o file.o utf8lib.o
-OBJ_T = test.o util.o conout.o file.o
-OBJ_C = main.o lexer.o parser.o file.o
-OBJ_X = exec-standalone.o util.o conout.o file.o
-
-ifneq ("$(CYGWIN)", "")
-	#nullify the common variables that
-	#most *nix systems have (for windows)
-	PREFIX   :=
-	BINDIR   :=
-	DATADIR  :=
-	MANDIR   :=
-	QCVM      = qcvm.exe
-	GMQCC     = gmqcc.exe
-	TESTSUITE = testsuite.exe
-else
-ifneq ("$(MINGW)", "")
-	#nullify the common variables that
-	#most *nix systems have (for windows)
-	PREFIX   :=
-	BINDIR   :=
-	DATADIR  :=
-	MANDIR   :=
-	QCVM      = qcvm.exe
-	GMQCC     = gmqcc.exe
-	TESTSUITE = testsuite.exe
+# Enable link-time optimizations if requested.
+ifeq ($(LTO),1)
+	CXXFLAGS += -flto
+endif
+
+ifeq ($(DEBUG),1)
+	# Ensure there is a frame-pointer in debug builds.
+	CXXFLAGS += -fno-omit-frame-pointer
+
+	# Disable all optimizations in debug builds.
+	CXXFLAGS += -O0
+
+	# Enable debug symbols.
+	CXXFLAGS += -g
 else
-	QCVM      = qcvm
-	GMQCC     = gmqcc
-	TESTSUITE = testsuite
+	# Disable all the stack protection features in release builds.
+	CXXFLAGS += -fno-stack-protector
+	CXXFLAGS += -fno-stack-check
+
+	# Disable frame pointer in release builds when AddressSanitizer isn't present.
+	ifeq ($(ASAN),1)
+		CXXFLAGS += -fno-omit-frame-pointer
+	else
+		CXXFLAGS += -fomit-frame-pointer
+	endif
+
+	# Highest optimization flag in release builds.
+	CXXFLAGS += -O3
+endif
+
+# Sanitizer selection
+ifeq ($(ASAN),1)
+	CXXFLAGS += -fsanitize=address
 endif
+ifeq ($(UBSAN),1)
+	CXXFLAGS += -fsanitize=undefined
 endif
 
-#standard rules
-default: all
-%.o: %.c
-	$(CC) -c $< -o $@ $(CFLAGS)
+#
+# Dependency flags
+#
+DEPFLAGS := -MMD
+DEPFLAGS += -MP
 
-exec-standalone.o: exec.c
-	$(CC) -c $< -o $@ $(CFLAGS) -DQCVM_EXECUTOR=1
+#
+# Linker flags
+#
+LDFLAGS :=
 
-$(QCVM): $(OBJ_X)
-	$(CC) -o $@ $^ $(CFLAGS) -lm
+# Remove unreferenced sections
+ifeq ($(UNUSED),1)
+	LDFLAGS += -Wl,--gc-sections
+endif
 
-$(GMQCC): $(OBJ_C) $(OBJ_D)
-	$(CC) -o $@ $^ $(CFLAGS)
+# Enable link-time optimizations if request.
+ifeq ($(LTO),1)
+	LDFLAGS += -flto
+endif
 
-$(TESTSUITE): $(OBJ_T)
-	$(CC) -o $@ $^ $(CFLAGS)
+# Sanitizer selection
+ifeq ($(ASAN),1)
+	LDFLAGS += -fsanitize=address
+endif
+ifeq ($(UBSAN),1)
+	LDFLAGS += -fsanitize=undefined
+endif
+
+# Strip the binaries when not a debug build
+ifneq (,$(findstring, -g,$(CXXFLAGS)))
+	STRIP := true
+else
+	STRIP := strip
+endif
 
 all: $(GMQCC) $(QCVM) $(TESTSUITE)
 
-check: all
-	@ ./$(TESTSUITE)
+# Build artifact directories.
+$(DEPDIR):
+	@mkdir -p $(DEPDIR)
+$(OBJDIR):
+	@mkdir -p $(OBJDIR)
+
+$(OBJDIR)/%.o: %.cpp $(DEPDIR)/%.d | $(OBJDIR) $(DEPDIR)
+	$(CXX) -MT $@ $(DEPFLAGS) -MF $(DEPDIR)/$*.Td $(CXXFLAGS) -c -o $@ $<
+	@mv -f $(DEPDIR)/$*.Td $(DEPDIR)/$*.d
+
+$(GMQCC): $(filter %.o,$(GSRCS:%.cpp=$(OBJDIR)/%.o))
+	$(CXX) $^ $(LDFLAGS) -o $@
+	$(STRIP) $@
+
+$(QCVM): $(filter %.o,$(QSRCS:%.cpp=$(OBJDIR)/%.o))
+	$(CXX) $^ $(LDFLAGS) -o $@
+	$(STRIP) $@
+
+$(TESTSUITE): $(filter %.o,$(TSRCS:%.cpp=$(OBJDIR)/%.o))
+	$(CXX) $^ $(LDFLAGS) -o $@
+	$(STRIP) $@
+
+# Determine if the tests should be run.
+RUNTESTS := true
+ifdef TESTSUITE
+	RUNTESTS := ./$(TESTSUITE)
+endif
+
+test: $(QCVM) $(TESTSUITE)
+	@$(RUNTESTS)
 
 clean:
-	rm -f *.o $(GMQCC) $(QCVM) $(TESTSUITE) *.dat
-
-# deps
-$(OBJ_D) $(OBJ_C) $(OBJ_X): gmqcc.h opts.def
-main.o:   lexer.h
-parser.o: ast.h lexer.h
-lexer.o:  lexer.h
-ast.o:    ast.h ir.h
-ir.o:     ir.h
-
-#install rules
-install: install-gmqcc install-qcvm install-doc
-install-gmqcc: $(GMQCC)
-	install -d -m755               $(DESTDIR)$(BINDIR)
-	install    -m755  $(GMQCC)     $(DESTDIR)$(BINDIR)/gmqcc
-install-qcvm: $(QCVM)
-	install -d -m755               $(DESTDIR)$(BINDIR)
-	install    -m755  $(QCVM)      $(DESTDIR)$(BINDIR)/qcvm
-install-doc:
-	install -d -m755               $(DESTDIR)$(MANDIR)/man1
-	install    -m755  doc/gmqcc.1  $(DESTDIR)$(MANDIR)/man1/
-	install    -m755  doc/qcvm.1   $(DESTDIR)$(MANDIR)/man1/
+	rm -rf $(DEPDIR) $(OBJDIR)
+
+.PHONY: test clean $(DEPDIR) $(OBJDIR)
+
+# Dependencies
+$(filter %.d,$(GSRCS:%.cpp=$(DEPDIR)/%.d)):
+include $(wildcard $@)
+
+$(filter %.d,$(QSRCS:%.cpp=$(DEPDIR)/%.d)):
+include $(wildcard $@)
+
+$(filter %.d,$(TSRCS:%.cpp=$(DEPDIR)/%.d)):
+include $(wildcard $@)