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385 lines
12 KiB
385 lines
12 KiB
# Generic C and C++ Makefile project template
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# Contains targets for `release', `debug', and `clean'.
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PROJECT=memfd_secret-shim
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AUTHOR=Avril (Flanchan) <flanchan@cumallover.me>
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DESCRIPTION=
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VERSION=0.0.0r1
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SRC = src
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# Exclude `src/test/*` from search.
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SRC_C = $(shell find $(SRC)/ -type f -name \*.c -a -not -path src/test/\*)
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SRC_CXX = $(shell find -O2 $(SRC)/ -type f -name \*.cpp -or -name \*.cxx -a -not -path src/test/\*)
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INCLUDE=include
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# If PCH should be auto-included for all TUs, set to 1.
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INCLUDE_PCH_GLOBAL?=0
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# Files to be auto-included by all TUs (after PCH global, if `INCLUDE_PCH_GLOBAL == 1`.)
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INCLUDE_GLOBAL=
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# Link to these libraries dynamicalls
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SHARED_LIBS=
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# Link to these libraries statically
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STATIC_LIBS=
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# Prefix for un/install targets
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ifeq ($(PREFIX),)
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PREFIX := /usr/local
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endif
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INCLUDE_PREFIX := $(PROJECT)/
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# Default archivers
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AR?=ar
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RANLIB?=ranlib
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# Linker to use
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LINKER?=gold
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# Use gcc-{ar,ranlib} when using gcc
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ifeq ($(CXX),g++)
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AR:=gcc-ar
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RANLIB:=gcc-ranlib
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endif
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# Pre-compile these headers
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PCH_HEADERS+=
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# PCH_HEADERS depend on these header files
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PCH_INCLUDES+=
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# Compile-time default program features (see `Features application` below.)
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FEATURES?=
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# Build constants
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CONSTANTS+=_GNU_SOURCE
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# Testing
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# Can be {release,debug}.{a,so}
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TARGET?=debug.a
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TEST_LDFLAGS+= -lfmt -lstdc++ -Wl,-z,now -Wl,-z -Wl,relro -Wl,-rpath,./
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TEST_CFLAGS+= -Og -g -fwhole-program
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override __COMMA=,
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override __VERSION_SPLIT:= $(subst ., ,$(VERSION))
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override __VERSION_REVISION:=$(word 3,$(__VERSION_SPLIT)) 0
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VERSION_MAJOR:= $(word 1,$(__VERSION_SPLIT))
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VERSION_MINOR:= $(word 2,$(__VERSION_SPLIT))
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VERSION_BUGFIX:= $(word 3,$(__VERSION_SPLIT))
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VERSION_REVISION:= $(word 2,$(subst r, ,$(__VERSION_REVISION)))
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override __VERSION_SPLIT:= MAJOR:$(word 1,$(__VERSION_SPLIT)) MINOR:$(word 2,$(__VERSION_SPLIT)) BUGFIX:$(word 1,$(subst r, ,$(__VERSION_REVISION))) REVISION:$(word 2,$(subst r, ,$(__VERSION_REVISION))) REVISION_STRING:$(word 3,$(__VERSION_SPLIT))
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COMMON_FLAGS+= -W -Wall
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COMMON_FLAGS+= $(addprefix -D,$(CONSTANTS))
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COMMON_FLAGS+= -pipe -Wstrict-aliasing -fno-strict-aliasing $(addprefix -I,$(INCLUDE))
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COMMON_FLAGS+= $(addprefix -D_VERSION_,$(subst :,=,$(__VERSION_SPLIT))) '-D_VERSION="$(VERSION)"'
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# PCH targets for `%_p.hh` -> `%_p.hh.gch`, add `-include $(PCH_HEADERS)` to general `COMMON_FLAGS`, and add $(PCH_OUT) as a requirement for all `%.c/pp` targets as well. (where `PCH_OUT= $(addsuffix .gch,$(PCH_HEADERS))`.)
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# Target arch & CPU. Set to blank for generic
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ARCH?=native
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CPU?=native
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# Enable OpenMP and loop parallelisation? (dyn-links to openmp)
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PARALLEL?=no
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# Enable CPU-specific features
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CPU_FLAGS?=
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BINFLAGS+=
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DEBUG_BINFLAGS+=
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RELEASE_BINFLAGS+= -fuse-linker-plugin
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OPT_FLAGS?= -fgraphite \
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-floop-interchange -ftree-loop-distribution -floop-strip-mine -floop-block \
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-fno-stack-check
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# Static and shared common flags
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SHARED_FLAGS+=-fPIC
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SHARED_RELEASE_FLAGS+=
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SHARED_DEBUG_FLAGS+=
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STATIC_FLAGS+=
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STATIC_RELEASE_FLAGS+=-ffat-lto-objects
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STATIC_DEBUG_FLAGS+=
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SHARED_LDFLAGS+=
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STATIC_LDFLAGS+=
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SHARED_BINFLAGS+=
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STATIC_BINFLAGS+=
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# Features application
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## Tell program which features are enabled via `FEATURE_<feature name in UPPER_SNAKE_CASE>`.
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override __FEATURES=$(shell echo "$(FEATURES)" | tr '[:lower:]' '[:upper:]' | tr '-' '_')
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COMMON_FLAGS+=$(addsuffix =1,$(addprefix -DFEATURE_,$(__FEATURES)))
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## Specific feature additions
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# ## Example:
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#ifneq (,$(findstring fast-math,$(FEATURES)))
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# # fast-math feature: Apply `-ffast-math`
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# COMMON_FLAGS+=-ffast-math
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#endif
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# Add linker
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ifneq ($(LINKER),)
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COMMON_FLAGS+=-fuse-ld=$(LINKER)
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endif
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# Arch and optimisation
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ifneq ($(ARCH),)
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OPT_FLAGS+= $(addprefix -march=,$(ARCH))
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endif
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ifneq ($(CPU),)
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OPT_FLAGS+= $(addprefix -mtune=,$(CPU))
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endif
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ifeq ($(PARALLEL),yes)
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SHARED_FLAGS+= -fopenmp
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SHARED_RELEASE_FLAGS+= -floop-parallelize-all -ftree-parallelize-loops=4
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endif
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COMMON_FLAGS+=$(addprefix -m,$(CPU_FLAGS))
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CXX_OPT_FLAGS?= $(OPT_FLAGS) -felide-constructors
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CSTD?=gnu2x
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CXXSTD?=gnu++23
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# Build Options
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STRIP=strip
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RELEASE_COMMON_FLAGS+= -fno-bounds-check
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DEBUG_COMMON_FLAGS+= -ggdb -gz -ftrapv -fbounds-check
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ifneq ($(TARGET_SPEC_FLAGS),no)
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RELEASE_CFLAGS?= -O3 -flto $(OPT_FLAGS)
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RELEASE_CXXFLAGS?= -O3 -flto $(CXX_OPT_FLAGS)
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RELEASE_LDFLAGS?= -Wl,-O3 -Wl,-flto
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DEBUG_CFLAGS?= -Og
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DEBUG_CXXFLAGS?= -Og
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DEBUG_LDFLAGS?=
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endif
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DEBUG_CFLAGS+=-DDEBUG $(DEBUG_COMMON_FLAGS)
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DEBUG_CXXFLAGS+=-DDEBUG $(DEBUG_COMMON_FLAGS) -fasynchronous-unwind-tables
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RELEASE_CFLAGS+=-DRELEASE $(RELEASE_COMMON_FLAGS)
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RELEASE_CXXFLAGS+=-DRELEASE $(RELEASE_COMMON_FLAGS)
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# Objects
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OBJ_C = $(addprefix obj/c/,$(SRC_C:.c=.o))
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OBJ_CXX = $(addprefix obj/cxx/,$(SRC_CXX:.cpp=.o))
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OBJ = $(OBJ_C) $(OBJ_CXX)
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# Pre-compiled header objects
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PCH_HEADERS+=$(shell find -O2 $(INCLUDE) -type f -name \*_p.hh -or -name \*_p.h)
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PCH_OUTPUT_LOCATION=
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PCH_OUTPUT=$(addprefix $(PCH_OUTPUT_LOCATION),$(addsuffix .gch,$(PCH_HEADERS)))
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PCH_BUILD_COMMON_FLAGS+=-H
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#-D_PCH_BUILD=1
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PCH_BUILD_CFLAGS+= -x c-header $(PCH_BUILD_COMMON_FLAGS)
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PCH_BUILD_CXXFLAGS+= -x c++-header $(PCH_BUILD_COMMON_FLAGS)
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PCH_CHEADERS=$(filter %.h,$(PCH_HEADERS))
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PCH_CXXHEADERS=$(filter %.hh,$(PCH_HEADERS))
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PCH_USE_COMMON_FLAGS+=-Winvalid-pch
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ifeq ($(INCLUDE_PCH_GLOBAL),1)
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# Globally included
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PCH_USE_CFLAGS+= $(addprefix -include ,$(realpath $(PCH_CHEADERS)))
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PCH_USE_CXXFLAGS+= $(addprefix -include ,$(realpath $(PCH_CXXHEADERS)))
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else
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# Seperately include them
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ifneq ($(PCH_OUTPUT_LOCATION),)
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override PCH_OUTPUT_LOCATION:=$(dir $(PCH_OUTPUT_LOCATION))
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# XXX: We don't wan't to be using PCH_OUTPUT_LOCATION really...
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COMMON_FLAGS:= $(addprefix -I,$(dir $(shell find -O3 $(PCH_OUTPUT_LOCATION) -mindepth 1 -type d -printf %p/ ))) $(COMMON_FLAGS)
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endif
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endif
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COMMON_FLAGS+=$(addprefix -include ,$(INCLUDE_GLOBAL))
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PCH_USE_CFLAGS+= $(PCH_USE_COMMON_FLAGS)
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PCH_USE_CXXFLAGS+= $(PCH_USE_COMMON_FLAGS)
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# Compiler Flags
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CFLAGS += $(COMMON_FLAGS) --std=$(CSTD)
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CXXFLAGS += $(COMMON_FLAGS) --std=$(CXXSTD)
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LDFLAGS += $(addsuffix .a,$(addprefix -l:lib,$(STATIC_LIBS))) $(addprefix -l,$(SHARED_LIBS))
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# PGO (unused for lib targets)
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PROF_FLAGS= -D_PGO_GEN -fprofile-generate
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PGO_OBJ_C= $(addprefix prof/c/,$(SRC_C:.c=.o))
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PGO_OBJ_CXX= $(addprefix prof/cxx/,$(SRC_CXX:.c=.o))
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PGO_OBJ= $(PGO_OBJ_C) $(PGO_OBJ_CXX)
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PROF_ITERATIONS=10
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PROF_LOCATION?=/tmp/$(PROJECT)-pgo
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PROF_LARGE_BOUND= 10240
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PROF_SMALL_BOUND= 1024
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# Phonies
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# XXX: This doesn't force them to run in series for some reason?
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.PHONY: release
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release: | dirs
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$(MAKE) lib$(PROJECT).a
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@$(MAKE) clean-rebuild >> /dev/null
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@$(MAKE) dirs >> /dev/null
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$(MAKE) lib$(PROJECT).so
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.PHONY: debug
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debug: | dirs
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$(MAKE) lib$(PROJECT)-debug.a
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@$(MAKE) clean-rebuild >> /dev/null
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@$(MAKE) dirs >> /dev/null
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$(MAKE) lib$(PROJECT)-debug.so
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# Rebuild both release and debug targets from scratch
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.PHONY: all
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all: | clean
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@$(MAKE) release
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@$(MAKE) clean-rebuild
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@$(MAKE) debug
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.PHONY: test
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test: $(PROJECT)-test
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-strace ./$<
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-valgrind ./$<
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./$(PROJECT)-test
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# Targets
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.PHONY: pch
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pch: | dirs $(PROJECT)-pch
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@echo 'WARNING: When building target $(PROJECT)-pch, the PCH file(s) will not be built with the default auto-opts enabled by targets of kind `debug` or `release`. This should only be used when full manually overriding all compile and linker flags' >&2
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$(PROJECT)-pch: $(PCH_OUTPUT)
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@echo ""
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@echo 'PCH: $(PCH_OUTPUT)' '<-' '$(PCH_HEADERS)'
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@echo " with: $(PCH_INCLUDES)"
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@echo 'C: $(PCH_CHEADERS)'
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@echo 'C++: $(PCH_CXXHEADERS)'
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# Invoking target `pch` itself is not necissary, they are build automatically where they are used.
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dirs:
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@mkdir -p $(addprefix {obj$(__COMMA)prof}/c{$(__COMMA)xx}/,$(shell find $(SRC)/ -type d))
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$(PCH_OUTPUT_LOCATION)%.hh.gch: CXXFLAGS+=$(PCH_BUILD_CXXFLAGS)
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$(PCH_OUTPUT_LOCATION)%.hh.gch: %.hh $(PCH_INCLUDES)
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@mkdir -p $(dir $@)
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$(CXX) $(CXXFLAGS) -o $@ -c $<
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$(PCH_OUTPUT_LOCATION)%.h.gch: CFLAGS+=$(PCH_BUILD_CFLAGS)
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$(PCH_OUTPUT_LOCATION)%.h.gch: %.h $(PCH_INCLUDES)
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@mkdir -p $(dir $@)
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$(CC) $(CFLAGS) -o $@ -c $<
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obj/c/%.o: CFLAGS+= $(PCH_USE_CFLAGS)
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obj/c/%.o: %.c $(PCH_OUTPUT)
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$(CC) -c $< $(CFLAGS) -o $@
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obj/cxx/%.o: CXXFLAGS+= $(PCH_USE_CXXFLAGS)
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obj/cxx/%.o: %.cpp $(PCH_OUTPUT)
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$(CXX) -c $< $(CXXFLAGS) -o $@
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prof/c/%.o: CFLAGS+= $(PCH_USE_CFLAGS)
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prof/c/%.o: %.c $(PCH_OUTPUT)
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$(CC) -c $< $(CFLAGS) -o $@ $(PROF_FLAGS)
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#$(LDFLAGS)
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prof/cxx/%.o: CXXFLAGS+= $(PCH_USE_CXXFLAGS)
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prof/cxx/%.o: %.cpp $(PCH_OUTPUT)
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$(CXX) -c $< $(CXXFLAGS) -o $@ $(PROF_FLAGS)
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#$(LDFLAGS)
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lib$(PROJECT)-release.a: CFLAGS+= $(RELEASE_CFLAGS) $(STATIC_FLAGS) $(STATIC_RELEASE_FLAGS)
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lib$(PROJECT)-release.a: CXXFLAGS += $(RELEASE_CXXFLAGS) $(STATIC_FLAGS) $(STATIC_RELEASE_FLAGS)
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lib$(PROJECT)-release.a: LDFLAGS += $(RELEASE_LDFLAGS) $(STATIC_LDFLAGS)
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lib$(PROJECT)-release.a: BINFLAGS += $(RELEASE_BINFLAGS) $(STATIC_BINFLAGS)
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lib$(PROJECT)-release.a: $(OBJ)
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$(AR) rcs $@ $^
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$(RANLIB) $@
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lib$(PROJECT)-debug.a: CFLAGS+= $(DEBUG_CFLAGS) $(STATIC_FLAGS) $(STATIC_DEBUG_FLAGS)
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lib$(PROJECT)-debug.a: CXXFLAGS += $(DEBUG_CXXFLAGS) $(STATIC_FLAGS) $(STATIC_DEBUG_FLAGS)
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lib$(PROJECT)-debug.a: LDFLAGS += $(DEBUG_LDFLAGS) $(STATIC_LDFLAGS)
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lib$(PROJECT)-debug.a: BINFLAGS += $(DEBUG_BINFLAGS) $(STATIC_BINFLAGS)
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lib$(PROJECT)-debug.a: $(OBJ)
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$(AR) rcs $@ $^
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$(RANLIB) $@
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lib$(PROJECT)-release.so: CFLAGS+= $(RELEASE_CFLAGS) $(SHARED_FLAGS) $(SHARED_RELEASE_FLAGS)
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lib$(PROJECT)-release.so: CXXFLAGS += $(RELEASE_CXXFLAGS) $(SHARED_FLAGS) $(SHARED_RELEASE_FLAGS)
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lib$(PROJECT)-release.so: LDFLAGS += $(RELEASE_LDFLAGS) $(SHARED_LDFLAGS)
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lib$(PROJECT)-release.so: BINFLAGS += $(RELEASE_BINFLAGS) $(SHARED_BINFLAGS)
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lib$(PROJECT)-release.so: $(OBJ)
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$(CXX) -shared $^ $(BINFLAGS) $(CXXFLAGS) -o $@ $(LDFLAGS)
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$(STRIP) $@
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lib$(PROJECT)-debug.so: CFLAGS+= $(DEBUG_CFLAGS) $(SHARED_FLAGS) $(SHARED_DEBUG_FLAGS)
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lib$(PROJECT)-debug.so: CXXFLAGS += $(DEBUG_CXXFLAGS) $(SHARED_FLAGS) $(SHARED_DEBUG_FLAGS)
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lib$(PROJECT)-debug.so: LDFLAGS += $(DEBUG_LDFLAGS) $(SHARED_LDFLAGS)
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lib$(PROJECT)-debug.so: BINFLAGS += $(DEBUG_BINFLAGS) $(SHARED_BINFLAGS)
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lib$(PROJECT)-debug.so: $(OBJ)
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$(CXX) -shared $^ $(BINFLAGS) $(CXXFLAGS) -o $@ $(LDFLAGS)
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lib$(PROJECT).a: lib$(PROJECT)-release.a
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ln -f $< $@
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lib$(PROJECT).so: LDFLAGS+= -Wl,-soname,lib$(PROJECT).so.$(VERSION_MAJOR)
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lib$(PROJECT).so: lib$(PROJECT)-release.so
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ln -f $< $@.$(VERSION)
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ln -sf $@.$(VERSION) $@.$(VERSION_MAJOR)
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ln -sf $@.$(VERSION_MAJOR) $@
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clean-source:
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find -O2 {obj,prof}/ -type f -exec rm {} +
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clean-rebuild: clean-source
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find $(INCLUDE) $(PCH_OUTPUT_LOCATION) -type f -name \*.gch -exec rm {} +
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clean: clean-rebuild
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rm -f lib$(PROJECT){,-{release,debug,pgo}}.{a,so{,.*}}
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rm -f $(PROJECT)-test
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clean-full: clean
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rm -rf {obj,prof}
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install:
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install -d $(DESTDIR)$(PREFIX)/lib/
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install -m 644 lib$(PROJECT).a $(DESTDIR)$(PREFIX)/lib/
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install -s -m 755 lib$(PROJECT).so.$(VERSION) $(DESTDIR)$(PREFIX)/lib/
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ln -sf lib$(PROJECT).so.$(VERSION) $(DESTDIR)$(PREFIX)/lib/lib$(PROJECT).so.$(VERSION_MAJOR)
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ln -sf lib$(PROJECT).so.$(VERSION_MAJOR) $(DESTDIR)$(PREFIX)/lib/lib$(PROJECT).so
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install -d $(DESTDIR)$(PREFIX)/include/$(INCLUDE_PREFIX)
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install -m 644 $(wildcard $(INCLUDE)/*.*) $(DESTDIR)$(PREFIX)/include/$(INCLUDE_PREFIX)
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uninstall:
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-rm $(DESTDIR)$(PREFIX)/lib/lib$(PROJECT).{a,so{,.*}}
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cd $(INCLUDE) && find . -type f | xargs -I {} rm "$(DESTDIR)$(PREFIX)/include/$(INCLUDE_PREFIX){}"
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[[ -d "$(DESTDIR)$(PREFIX)/include/$(INCLUDE_PREFIX)" ]] && \
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rmdir $(DESTDIR)$(PREFIX)/include/$(INCLUDE_PREFIX) || :
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#TODO: We can make the target between `{debug,release}{.a,.so}` configurable by call. e.g. `TARGET=release.a make test`
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$(PROJECT)-test: SHARED_LDFLAGS+=-Wl,-soname,./lib$(PROJECT)-$(TARGET)
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$(PROJECT)-test: lib$(PROJECT)-$(TARGET)
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$(CC) $(CFLAGS) $(TEST_CFLAGS) src/test/*.c -o $@ -L./ -l:$< $(LDFLAGS) $(TEST_LDFLAGS)
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