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Bring Makefile on par with yquake2:
* Make CFLAGS and LDFLAGS overrideable * Correct architecture and operating system detection. * Enforce FPU mode. * Implement DEBUG. * Pass LDFLAGS after the objects. Closes #9, closes #10.
This commit is contained in:
Yamagi
parent
fad0152c6b
commit
1531bcebb7
1 changed files with 96 additions and 51 deletions
131
Makefile
131
Makefile
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@ -19,19 +19,33 @@
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# Detect the OS
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ifdef SystemRoot
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OSTYPE := Windows
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YQ2_OSTYPE ?= Windows
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else
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OSTYPE := $(shell uname -s)
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YQ2_OSTYPE ?= $(shell uname -s)
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endif
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# Special case for MinGW
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ifneq (,$(findstring MINGW,$(OSTYPE)))
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OSTYPE := Windows
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ifneq (,$(findstring MINGW,$(YQ2_OSTYPE)))
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YQ2_OSTYPE := Windows
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endif
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# Detect the architecture
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ifeq ($(YQ2_OSTYPE), Windows)
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ifdef PROCESSOR_ARCHITEW6432
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# 64 bit Windows
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YQ2_ARCH ?= $(PROCESSOR_ARCHITEW6432)
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else
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# 32 bit Windows
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YQ2_ARCH ?= $(PROCESSOR_ARCHITECTURE)
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endif
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else
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# Normalize some abiguous YQ2_ARCH strings
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YQ2_ARCH ?= $(shell uname -m | sed -e 's/i.86/i386/' -e 's/amd64/x86_64/' -e 's/^arm.*/arm/')
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endif
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# On Windows / MinGW $(CC) is undefined by default.
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ifeq ($(YQ2_OSTYPE),Windows)
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CC := gcc
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CC ?= gcc
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endif
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# Detect the compiler
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@ -47,30 +61,32 @@ endif
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# ----------
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# Base CFLAGS.
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#
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# -O2 are enough optimizations.
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#
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# -fno-strict-aliasing since the source doesn't comply
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# with strict aliasing rules and it's next to impossible
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# to get it there...
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#
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# -fomit-frame-pointer since the framepointer is mostly
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# useless for debugging Quake II and slows things down.
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#
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# -g to build allways with debug symbols. Please do not
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# change this, since it's our only chance to debug this
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# crap when random crashes happen!
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#
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# -fPIC for position independend code.
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#
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# -MMD to generate header dependencies.
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ifeq ($(OSTYPE), Darwin)
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CFLAGS := -O2 -fno-strict-aliasing -fomit-frame-pointer \
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-Wall -pipe -g -fwrapv -arch x86_64
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# Base CFLAGS. These may be overridden by the environment.
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# Highest supported optimizations are -O2, higher levels
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# will likely break this crappy code.
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ifdef DEBUG
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CFLAGS ?= -O0 -g -Wall -pipe
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else
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CFLAGS := -O2 -fno-strict-aliasing -fomit-frame-pointer \
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-Wall -pipe -g -MMD -fwrapv
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CFLAGS ?= -O2 -Wall -pipe -fomit-frame-pointer
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endif
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# Always needed are:
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# -fno-strict-aliasing since the source doesn't comply
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# with strict aliasing rules and it's next to impossible
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# to get it there...
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# -fwrapv for defined integer wrapping. MSVC6 did this
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# and the game code requires it.
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override CFLAGS += -std=gnu99 -fno-strict-aliasing -fwrapv
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# -MMD to generate header dependencies. Unsupported by
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# the Clang shipped with OS X.
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ifneq ($(YQ2_OSTYPE), Darwin)
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override CFLAGS += -MMD
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endif
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# OS X architecture.
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ifeq ($(YQ2_OSTYPE), Darwin)
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override CFLAGS += -arch $(YQ2_ARCH)
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endif
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# ----------
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@ -91,20 +107,49 @@ endif
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# ----------
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# Base LDFLAGS.
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ifeq ($(OSTYPE), Darwin)
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LDFLAGS := -shared -arch x86_64
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else ifeq ($(OSTYPE), Windows)
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LDFLAGS := -shared -static-libgcc
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else
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LDFLAGS := -shared -lm
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# Defines the operating system and architecture
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override CFLAGS += -DYQ2OSTYPE=\"$(YQ2_OSTYPE)\" -DYQ2ARCH=\"$(YQ2_ARCH)\"
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# ----------
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# For reproduceable builds, look here for details:
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# https://reproducible-builds.org/specs/source-date-epoch/
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ifdef SOURCE_DATE_EPOCH
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CFLAGS += -DBUILD_DATE=\"$(shell date --utc --date="@${SOURCE_DATE_EPOCH}" +"%b %_d %Y" | sed -e 's/ /\\ /g')\"
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endif
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# ----------
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# https://reproducible-builds.org/specs/source-date-epoch/
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ifdef SOURCE_DATE_EPOCH
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CFLAGS += -DBUILD_DATE=\"$(shell date --utc --date="@${SOURCE_DATE_EPOCH}" +"%b %_d %Y" | sed -e 's/ /\\ /g')\"
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# If we're building with gcc for i386 let's define -ffloat-store.
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# This helps the old and crappy x87 FPU to produce correct values.
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# Would be nice if Clang had something comparable.
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ifeq ($(YQ2_ARCH), i386)
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ifeq ($(COMPILER), gcc)
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override CFLAGS += -ffloat-store
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endif
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endif
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# Force SSE math on x86_64. All sane compilers should do this
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# anyway, just to protect us from broken Linux distros.
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ifeq ($(YQ2_ARCH), x86_64)
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override CFLAGS += -mfpmath=sse
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endif
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# ----------
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# Base LDFLAGS.
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LDFLAGS ?=
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# It's a shared library.
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override LDFLAGS += -shared
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# Required libaries
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ifeq ($(YQ2_OSTYPE), Darwin)
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override LDFLAGS += -arch $(YQ2_ARCH)
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else ifeq ($(OSTYPE), Windows)
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override LDFLAGS += -static-libgcc
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else
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override LDFLAGS += -lm
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endif
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# ----------
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@ -209,18 +254,18 @@ CTF_DEPS= $(CTF_OBJS:.o=.d)
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# ----------
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ifeq ($(OSTYPE), Windows)
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ifeq ($(YQ2_OSTYPE), Windows)
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release/game.dll : $(CTF_OBJS)
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@echo "===> LD $@"
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$(Q)$(CC) $(LDFLAGS) -o $@ $(CTF_OBJS)
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else ifeq ($(OSTYPE), Darwin)
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$(Q)$(CC) -o $@ $(CTF_OBJS) $(LDFLAGS)
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else ifeq ($(YQ2_OSTYPE), Darwin)
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release/game.dylib : $(CTF_OBJS)
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@echo "===> LD $@"
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${Q}$(CC) $(LDFLAGS) -o $@ $(CTF_OBJS)
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${Q}$(CC) -o $@ $(CTF_OBJS) $(LDFLAGS)
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else
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release/game.so : $(CTF_OBJS)
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@echo "===> LD $@"
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$(Q)$(CC) $(LDFLAGS) -o $@ $(CTF_OBJS)
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$(Q)$(CC) -o $@ $(CTF_OBJS) $(LDFLAGS)
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endif
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# ----------
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