per-config build output using VPATH
based on https://make.mad-scientist.net/papers/multi-architecture-builds/
This commit is contained in:
Vinzenz Schroeter
parent
6c3792330d
commit
95b93f4fe2
1
.gitignore
vendored
1
.gitignore
vendored
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@ -5,3 +5,4 @@ out
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.envrc
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result
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mutants.*
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_out_*
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@ -1,33 +1,48 @@
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# based on https://make.mad-scientist.net/papers/multi-architecture-builds/
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_libc := $(if $(LIBC),$(LIBC),gnu)
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ifeq (,$(filter gnu musl,$(_libc)))
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_link_type := $(error "LIBC has to be set to one of: gnu, musl")
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endif
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_link_type := $(if $(LINK),$(LINK),dynamic)
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ifeq (,$(filter dynamic static,$(_link_type)))
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_link_type := $(error "LINK has to be set to one of: dynamic, static")
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endif
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_profile := $(if $(PROFILE),$(PROFILE),release)
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ifeq (,$(filter release debug size-optimized,$(_profile)))
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_profile := $(error "PROFILE has to be set to one of: debug, release, size-optimized")
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endif
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ARCH ?= $(shell uname -m)
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RUST_TARGET := $(ARCH)-unknown-linux-$(_libc)
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#----- Begin Boilerplate
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ifeq (,$(filter _out_%,$(notdir $(CURDIR))))
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include target.mk
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else
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#----- End Boilerplate
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VPATH = $(SRCDIR)
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CARGO ?= cargo
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STRIP ?= strip
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CC ?= gcc
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RUST_ARCH ?= x86_64
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FEATURES := ""#"env_logger"
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THIS_DIR := $(dir $(realpath $(lastword $(MAKEFILE_LIST))))
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REPO_ROOT := $(realpath $(THIS_DIR)/..)
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export SERVICEPOINT_HEADER_OUT := $(REPO_ROOT)/include
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# TODO: check if override is needed
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override _libc := $(if $(MUSL),musl,gnu)
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override _profile := $(if $(PROFILE),$(PROFILE),release)
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override _rust_cli_profile := $(if $(filter $(_profile),debug),dev,$(_profile))
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override _link_type := $(if $(LINK),$(LINK),dynamic)
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_rust_cli_profile := $(if $(filter $(_profile),debug),dev,$(_profile))
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# TODO: make LINK=static fails with linker error "undefined reference to `_dl_find_object'" in libgcc_eh.a
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_all_profiles := release debug size-optimized
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ifeq (,$(filter $(_all_profiles),$(_profile)))
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_profile := $(error "PROFILE has to be set to one of: debug, release, size-optimized")
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endif
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# TODO: `make LINK=static` fails with linker error "undefined reference to `_dl_find_object'" in libgcc_eh.a
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STRIPFLAGS += -s --strip-unneeded -R .comment -R .gnu.version -R .note -R .note.gnu.build-id -R .note.ABI-tag
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STATIC_LINK_LIBS += -lservicepoint_binding_c
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RUST_TARGET := $(RUST_ARCH)-unknown-linux-$(_libc)
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size-optimized_CARGOFLAGS += -Zbuild-std="core,std,alloc,proc_macro,panic_abort" \
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-Zbuild-std-features="panic_immediate_abort"
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CARGOFLAGS += --manifest-path=$(REPO_ROOT)/Cargo.toml \
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@ -35,7 +50,8 @@ CARGOFLAGS += --manifest-path=$(REPO_ROOT)/Cargo.toml \
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--no-default-features \
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--features=$(FEATURES) \
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--target=$(RUST_TARGET) \
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$($(_profile)_CARGOFLAGS)
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$($(_profile)_CARGOFLAGS) \
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--target-dir=cargo
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CFLAGS += -Wall -Wextra -pedantic -fwhole-program -fPIE -pie
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_no_debug_cflags := -ffunction-sections -fdata-sections -Wl,--gc-sections
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@ -70,16 +86,20 @@ ifneq ($(_profile), debug)
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RUSTFLAGS += -C link-arg=-s -C link-arg=-Wl,--gc-sections
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endif
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CFLAGS += $($(_libc)_CFLAGS) $($(_profile)_CFLAGS) $($(_link_type)_CFLAGS)
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CARGO_OBJDIR := cargo/$(RUST_TARGET)/$(_profile)
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_servicepoint_cflags := -I $(REPO_ROOT)/include -L $(CARGO_OBJDIR)
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CFLAGS += $($(_libc)_CFLAGS) $($(_profile)_CFLAGS) $($(_link_type)_CFLAGS) $(_servicepoint_cflags)
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ifeq ($(LTO), 1)
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CFLAGS += -flto
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endif
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RUST_TARGET_DIR := $(REPO_ROOT)/target/$(RUST_TARGET)/$(_profile)
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_c_src := $(wildcard ./src/*.c)
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# TODO: wildcard does not work with VPATH
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_c_src := src/announce.c src/brightness_tester.c src/header_logger.c \
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src/moving_line.c src/random_stuff.c src/wiping_clear.c
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_programs := $(basename $(notdir $(_c_src)))
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_bins := $(addprefix out/, $(_programs))
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_bins := $(_programs)
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_unstripped_bins := $(addsuffix _unstripped, $(_bins))
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_run_programs := $(addprefix run_, $(_programs))
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@ -87,30 +107,15 @@ _run_programs := $(addprefix run_, $(_programs))
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all: $(_bins)
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clean: clean-c clean-rust
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clean-c:
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rm -r out || true
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clean-rust:
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rm $(SERVICEPOINT_HEADER_OUT)/servicepoint.h || true
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cargo clean
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.PHONY: all clean sizes $(_run_programs) clean-c clean-rust build-rust help FORCE
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$(_unstripped_bins): out/%_unstripped: src/%.c src/helpers.h build-rust
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mkdir -p out || true
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$(CC) $< \
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-I $(SERVICEPOINT_HEADER_OUT) \
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-L $(RUST_TARGET_DIR) \
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$(CFLAGS) \
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-o $@
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$(_unstripped_bins): %_unstripped: src/%.c src/helpers.h build-rust
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$(CC) $< $(CFLAGS) -o $@
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$(_bins): out/%: out/%_unstripped
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$(_bins): %: %_unstripped
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$(STRIP) $(STRIPFLAGS) $^ -o $@
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build-rust: FORCE
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mkdir -p $(SERVICEPOINT_HEADER_OUT) || true
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# generate servicepoint header and library to link against
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$(CARGO) rustc $(CARGOFLAGS) -- $(RUSTFLAGS)
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@ -126,3 +131,6 @@ help:
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@echo "STRIP | which strip command to use | 'strip' | -"
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@echo "MUSL | if set, use musl instead of glibc | unset | '1'"
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@echo "PROFILE | Compilation profile | 'release' | 'debug' or 'size-optimized'"
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#----- Begin Boilerplate
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endif
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38
example/target.mk
Normal file
38
example/target.mk
Normal file
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@ -0,0 +1,38 @@
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# Based on https://make.mad-scientist.net/papers/multi-architecture-builds/
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.SUFFIXES:
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OBJDIR := _out_$(RUST_TARGET)-$(_link_type)-$(_profile)
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# Define the rules to build in the target subdirectories.
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#
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MAKETARGET = $(MAKE) --no-print-directory -C $@ -f $(CURDIR)/Makefile \
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SRCDIR=$(CURDIR) $(MAKECMDGOALS)
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.PHONY: $(OBJDIR)
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$(OBJDIR):
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+@[ -d "$@" ] || mkdir -p "$@"
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+@$(MAKETARGET)
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# These rules keep make from trying to use the match-anything rule below to
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# rebuild the makefiles--ouch! Obviously, if you don't follow my convention
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# of using a `.mk' suffix on all non-standard makefiles you'll need to change
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# the pattern rule.
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#
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Makefile : ;
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%.mk :: ;
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# Anything we don't know how to build will use this rule. The command is a
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# do-nothing command, but the prerequisites ensure that the appropriate
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# recursive invocations of make will occur.
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#
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% :: $(OBJDIR) ;
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# The clean rule is best handled from the source directory: since we're
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# rigorous about keeping the target directories containing only target files
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# and the source directory containing only source files, `clean' is as trivial
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# as removing the target directories!
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#
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.PHONY: clean
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clean:
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rm -rf $(OBJDIR)
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