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rework makefile to be more os- and compiler-agnostic.

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alongside removing non-crucial complexity and attempting to simplify
things as much as I can.
This commit is contained in:
Quinn
2025-05-21 16:49:52 +02:00
parent 1d2617e3b3
commit cbefafacf8
1 changed files with 77 additions and 88 deletions
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165
makefile
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@@ -1,118 +1,112 @@
# dependencies: # dependencies:
# - make # - make
# - clang # - C compiler
# - glfw3 (install glfw3:x64-mingw-dynamic via vcpkg for win cross compilation) # - glfw3 (install glfw3:x64-mingw-dynamic via vcpkg for cross compilation)
# - vcpkg (win cross-compilation) # - (windows) git bash (recommended)
NAME := mcaselector-lite
DEBUG ?= 0
ARCH ?= 0
# C compiler options # build configuration, information about the current build process
CC := clang NAME := mcaselector-lite
CSTD := c17 VERSION := 0.0.0
CFLAGS := -Wall -Wextra -Wpedantic -Wno-pointer-arith -Ilib DEBUG ?= 0
LDFLAGS := CC ?= cc
CFLAGS += -c -std=c17 -Wall -Wextra -Wpedantic -Ilib -MMD -MP
LDFLAGS +=
MARCH ?= $(shell uname -m)
KERNEL ?= $(shell uname -s | tr '[:upper:]' '[:lower:]')
# check whether KERNEL is something nonsensical
ISWIN := $(if $(filter linux darwin freebsd netbsd openbsd,$(KERNEL)),0,1)
# profiles # profiles
ifneq ($(DEBUG),0) ifeq ($(DEBUG),1) # check whether we're debugging
CFLAGS += -g -Og -fsanitize=address,undefined CFLAGS += -Og -g -fsanitize=address,undefined
LDFLAGS += -fsanitize=address,undefined LDFLAGS += -fsanitize=address,undefined
PROF := dbg PROF := dbg
else else ifeq ($(DEBUG),test) # check whether we're perhaps testing
CFLAGS += -DNDEBUG -O2 -Werror CFLAGS += -O2
PROF := test
else # otherwise, assume release
CFLAGS += -O2 -DNDEBUG
PROF := rel PROF := rel
endif endif
# targets # setup the VCPKG_TRIPLET
ifneq ($(MAKECMDGOALS),clean) # because microsoft thinks they should use a different method of classifying stuff than the standard
ifeq ($(ARCH),linux-x86_64) ifneq ($(VCPKG_ROOT),)
CFLAGS += -target x86_64-pc-linux-gnu $(shell pkg-config --cflags glfw3) VCPKG_TRIPLET ?= $(strip \
LDFLAGS += -target x86_64-pc-linux-gnu $(shell pkg-config --libs glfw3) $(if $(filter x86_64,$(MARCH)),x64, \
else ifeq ($(ARCH),win-x86_64) ))-$(strip \
CFLAGS += -target x86_64-pc-windows-gnu -I$(VCPKG_ROOT)/installed/x64-mingw-dynamic/include $(if $(filter linux,$(KERNEL)),linux-dynamic, \
LDFLAGS += -target x86_64-pc-windows-gnu -L$(VCPKG_ROOT)/installed/x64-mingw-dynamic/lib -lglfw3dll -fuse-ld=lld $(if $(filter darwin,$(KERNEL)),osx-dynamic, \
EXT := .exe mingw-static)) \
)
# override the pkg config path, so it is used instead of system packages
export PKG_CONFIG_PATH := $(VCPKG_ROOT)/installed/$(VCPKG_TRIPLET)/lib/pkgconfig
else ifneq ($(shell which pkg_config),)
$(warning couldn't find VCPKG_ROOT, attempting to use system packages using pkg-config!)
else else
$(error you must set the ARCH environment variable to one of these: 'linux-x86_64' 'win-x86_64') $(error neither VCPKG_ROOT nor pkg_config were available!)
endif endif
# use pkg-config to set the include and linker information
CFLAGS += $(shell pkg-config --cflags glfw3)
LDFLAGS += $(shell pkg-config --libs glfw3)
# windows specific handling
ifeq ($(ISWIN),1)
NAME := $(NAME).exe
endif
# build directory structure
DIR_BIN := bin/$(MARCH)-$(KERNEL)/$(VERSION)/$(PROF)
DIR_OBJ := obj/$(MARCH)-$(KERNEL)/$(VERSION)/$(PROF)
# get source files
ifneq ($(DEBUG),test)
SRC := $(shell find src/ -name '*.c')
else
SRC := $(filter-out src/main.c, $(shell find test/ src/ -name '*.c'))
CFLAGS += -DGLFW_DLL
endif endif
# output files # output files
ifneq ($(ARCH),0) BIN := $(DIR_BIN)/$(NAME)
DIR_BIN := bin/$(ARCH)/$(PROF) OBJ := $(SRC:%.c=$(DIR_OBJ)/%.o)
DIR_OBJ := obj/$(ARCH)/$(PROF) DEP := $(OBJ:.o=.d)
BIN := $(DIR_BIN)/$(NAME)$(EXT)
C_SRC := $(shell find src/ -name '*.c')
C_OBJ := $(patsubst src/%,$(DIR_OBJ)/%,$(C_SRC:.c=.o))
C_DEP := $(C_OBJ:.o=.d)
C_TSRC := $(shell find test/src/ -name '*.c')
C_TOBJ := $(patsubst test/src/%,test/$(DIR_OBJ)/%,$(C_TSRC:.c=.o))
C_TDEP := $(C_TOBJ:.o=.d)
C_TOBJ += $(filter-out $(DIR_OBJ)/main.o, $(C_OBJ))
COMPILE_COMMANDS := $(DIR_OBJ)/compile_commands.json COMPILE_COMMANDS := $(DIR_OBJ)/compile_commands.json
endif
define log_col .PHONY: run compile
@printf "\033[%sm%s\033[0m\n" $(2) $(1) run: compile_commands $(BIN); $(BIN)
endef compile: compile_commands $(BIN)
comp = $(call log_col,$(1),92)
mesg = $(call log_col,$(1),94)
warn = $(call log_col,$(1),93)
fail = $(call log_col,$(1),91)
# creates the binary (linking step) # creates the binary (linking step)
define link_bin $(BIN): $(OBJ)
$1: $2 @mkdir -p $(@D)
@$$(call mesg,"CC: '$$(CC)'") $(CC) -o $@ $^ $(LDFLAGS)
@$$(call mesg,"CFLAGS: '$$(CFLAGS)'")
@$$(call mesg,"LDFLAGS: '$$(LDFLAGS)'")
@$$(call comp,"linking to: '$$@'")
@mkdir -p $$(@D) # compilation rule
@$$(CC) $$(LDFLAGS) -o $$@ $$^ $(DIR_OBJ)/%.o: %.c
@$$(call mesg,"current profile: '$$(PROF)'") @mkdir -p $(@D)
$(CC) $(CFLAGS) -o $@ $<
endef .PHONY .NOTPARALLEL:
# creates .o and .d files
define compile_obj
$1/%.o: $2/%.c
@$$(call comp,"compiling $$@ from $$<")
@mkdir -p $$(@D)
@$$(CC) $$(CFLAGS) -c -MD -MP -std=$$(CSTD) -x c -o $$@ $$<
endef
# compiles and executes the produced binary
run: compile; cd $(DIR_BIN) && ./$(NAME)$(EXT)
compile: compile_commands $(BIN)
run-test: compile-test; cd test/$(DIR_BIN) && ./test$(EXT)
compile-test: test/$(DIR_BIN)/test$(EXT)
.NOTPARALLEL:
clean: clean:
@$(call warn,"cleaning!") rm -rf obj bin compile_commands.json
rm -rf bin/ obj/ test/obj test/bin compile_commands.json
# compilation macros
$(eval $(call link_bin,$(BIN),$(C_OBJ))) # link the binary
$(eval $(call compile_obj,$(DIR_OBJ),src)) # compile the objects for the binary
$(eval $(call link_bin,test/$(DIR_BIN)/test$(EXT),$(C_TOBJ))) # link the testing binary
$(eval $(call compile_obj,test/$(DIR_OBJ),test/src)) # compile the objects for the testing binary
# update compile commands if the makefile has been updated (for linting) # update compile commands if the makefile has been updated (for linting)
compile_commands: # default, empty rule compile_commands: # default, empty rule
ifneq ($(shell which bear),) ifneq ($(shell which bear),)
ifneq ($(COMPILE_COMMANDS),) ifneq ($(COMPILE_COMMANDS),)
ifeq ($(NOCMDS),) ifeq ($(NOCMDS),)
.NOTPARALLEL .PHONY: .PHONY .NOTPARALLEL:
compile_commands: $(COMPILE_COMMANDS) compile_commands: $(COMPILE_COMMANDS)
@[ "$(readlink compile_commands.json)" != "$<" ] && ln -sf $< compile_commands.json ln -sf $< compile_commands.json
.NOTPARALLEL: .NOTPARALLEL:
$(COMPILE_COMMANDS): makefile $(COMPILE_COMMANDS): makefile
@$(call warn,"regenerating compile_commands.json thus recompiling.") @$(warning regenerating compile_commands.json thus recompiling.)
@mkdir -p ${@D} # ensure the target directory exists @mkdir -p ${@D} # ensure the target directory exists
@touch $@ # create the file so it isn't retriggered (will just change modification time if already exists) @touch $@ # create the file so it isn't retriggered (will just change modification time if already exists)
@bear --output $@ -- make -B compile NOCMDS=1 # rebuild the current target using bear, to create the compile commands @bear --output $@ -- make -B compile NOCMDS=1 # rebuild the current target using bear, to create the compile commands
@@ -120,9 +114,4 @@ endif
endif endif
endif endif
# disable implicit rules -include $(DEP)
.SUFFIXES:
# include the dependencies
-include $(C_DEP)
-include $(C_TDEP)