Makefile

CC       ?= cc
HOSTCC   ?= $(CC)
CFLAGS   ?= -O2 -Wall -Wextra -Werror -Wpedantic -Wshadow -std=c11 -Isrc
VERSION  ?= $(shell git describe --tags --abbrev --dirty 2>/dev/null || echo unknown)
override CFLAGS += -DENVCTL_VERSION='"$(VERSION)"'
# -MMD -MP: emit .d dependency files so .h edits rebuild the right .o files.
DEPFLAGS ?= -MMD -MP
PREFIX   ?= $(HOME)/.local
DIST     ?= dist

SRCS := src/util.c src/agent.c src/cli.c src/complete.c src/module.c src/help.c src/lines.c src/entropy.c \
        src/redact.c src/mask.c src/filter.c src/envsrc.c src/diff.c \
        src/fileio.c src/main.c
OBJS := $(SRCS:.c=.o)
DEPS := $(OBJS:.o=.d)

# git describe reports a new version without any source file changing.
STAMP := .version

# All release artifacts are built natively on the matching runner.
LINUX_AMD64_CC   ?= $(CC)
LINUX_ARM64_CC   ?= $(CC)
WINDOWS_AMD64_CC ?= gcc
WINDOWS_ARM64_CC ?= gcc
DARWIN_CC        ?= $(CC)

ifeq ($(OS),Windows_NT)
EXE := .exe
# Windows has no unprivileged symlinks, so `install` copies the binary; Unix
# links it so rebuilds propagate without re-installing.
INSTALL_LINK := cp -f
else
EXE :=
INSTALL_LINK := ln -sf
endif
BIN    := envctl$(EXE)
MANGEN := gen/man$(EXE)
MAN1   := man/envctl.1

# The housekeeping recipes below shell out to coreutils (mkdir/cp/rm). GNU make
# finds an sh.exe on PATH even when launched from PowerShell/cmd, but only routes
# a recipe through it when the line holds a shell metacharacter — otherwise it
# tries a bare CreateProcess, which can't run mkdir/cp/rm (they aren't .exe
# files). So quote every path (the quote forces the shell) and normalise make's
# backslashy $(HOME) to forward slashes (a bare '\' is an escape to sh). No-op
# on Unix, where paths already use '/'.
slash = $(subst \,/,$1)

ART_LINUX_AMD64   := $(DIST)/envctl-linux-amd64
ART_LINUX_ARM64   := $(DIST)/envctl-linux-arm64
ART_DARWIN_AMD64  := $(DIST)/envctl-darwin-amd64
ART_DARWIN_ARM64  := $(DIST)/envctl-darwin-arm64
ART_WINDOWS_AMD64 := $(DIST)/envctl-windows-amd64.exe
ART_WINDOWS_ARM64 := $(DIST)/envctl-windows-arm64.exe

NPROCS := $(shell getconf _NPROCESSORS_ONLN 2>/dev/null || getconf NPROCESSORS_ONLN 2>/dev/null || sysctl -n hw.logicalcpu 2>/dev/null || nproc 2>/dev/null || echo 2)
MAKEFLAGS += -j$(NPROCS)

.PHONY: all clean install fmt format test man FORCE
.PHONY: dist-linux-amd64 dist-linux-arm64 dist-darwin-amd64 dist-darwin-arm64
.PHONY: dist-windows-amd64 dist-windows-arm64 checksums

all: $(BIN)

$(BIN): $(OBJS)
	$(CC) $(CFLAGS) -o $@ $(OBJS)

src/%.o: src/%.c
	$(CC) $(CFLAGS) $(DEPFLAGS) -c -o $@ $<

$(OBJS): $(STAMP)

$(STAMP): FORCE
	@printf '%s' '$(VERSION)' > "$@.tmp"
	@if cmp -s "$@.tmp" "$@"; then rm -f "$@.tmp"; else mv -f "$@.tmp" "$@"; fi

FORCE:

# Pull in header deps generated by $(DEPFLAGS); missing files are fine on first build.
-include $(DEPS)

# ---------------------------------------------------------------------------
# man page (generated from the CLI registry in src/cli.c)
# ---------------------------------------------------------------------------

man: $(MAN1)

$(MANGEN): gen/man.c src/cli.c src/cli.h
	$(HOSTCC) $(CFLAGS) -o $@ gen/man.c src/cli.c

$(MAN1): $(MANGEN)
	mkdir -p "man"
	"./$(MANGEN)" > "$(MAN1)"

# ---------------------------------------------------------------------------
# test
# ---------------------------------------------------------------------------

test: $(BIN) $(MANGEN)
	@"./$(MANGEN)" > "$(MAN1).gen"
	@cmp -s "$(MAN1)" "$(MAN1).gen" || { \
		echo "$(MAN1) is stale: regenerate with 'make man' and commit it" >&2; \
		diff -u "$(MAN1)" "$(MAN1).gen" >&2 || true; \
		rm -f "$(MAN1).gen"; \
		exit 1; \
	}
	@rm -f "$(MAN1).gen"
	@bash tests/run.sh "$(CURDIR)/$(BIN)"
	@bash tests/completions.sh "$(CURDIR)/$(BIN)"

# ---------------------------------------------------------------------------
# release artifacts — one compile of all sources per platform triple
# ---------------------------------------------------------------------------

$(DIST):
	mkdir -p "$(call slash,$(DIST))"

dist-linux-amd64: $(ART_LINUX_AMD64)
$(ART_LINUX_AMD64): $(SRCS) $(STAMP) | $(DIST)
	$(LINUX_AMD64_CC) $(CFLAGS) -static -s -o $@ $(SRCS)

dist-linux-arm64: $(ART_LINUX_ARM64)
$(ART_LINUX_ARM64): $(SRCS) $(STAMP) | $(DIST)
	$(LINUX_ARM64_CC) $(CFLAGS) -static -s -o $@ $(SRCS)

dist-darwin-amd64: $(ART_DARWIN_AMD64)
$(ART_DARWIN_AMD64): $(SRCS) $(STAMP) | $(DIST)
	$(DARWIN_CC) $(CFLAGS) -o $@ $(SRCS)

dist-darwin-arm64: $(ART_DARWIN_ARM64)
$(ART_DARWIN_ARM64): $(SRCS) $(STAMP) | $(DIST)
	$(DARWIN_CC) $(CFLAGS) -o $@ $(SRCS)

dist-windows-amd64: $(ART_WINDOWS_AMD64)
$(ART_WINDOWS_AMD64): $(SRCS) $(STAMP) | $(DIST)
	$(WINDOWS_AMD64_CC) $(CFLAGS) -static -s -o $@ $(SRCS)

dist-windows-arm64: $(ART_WINDOWS_ARM64)
$(ART_WINDOWS_ARM64): $(SRCS) $(STAMP) | $(DIST)
	$(WINDOWS_ARM64_CC) $(CFLAGS) -static -s -o $@ $(SRCS)

checksums:
	@cd $(DIST) && sha256sum envctl-* > SHA256SUMS && cat SHA256SUMS

install: $(BIN)
	mkdir -p "$(call slash,$(PREFIX))/bin"
	$(INSTALL_LINK) "$(call slash,$(CURDIR))/$(BIN)" "$(call slash,$(PREFIX))/bin/$(BIN)"
	mkdir -p "$(call slash,$(PREFIX))/share/man/man1"
	cp -f "$(call slash,$(CURDIR))/$(MAN1)" "$(call slash,$(PREFIX))/share/man/man1/envctl.1"
	mkdir -p "$(call slash,$(PREFIX))/share/bash-completion/completions"
	"./$(BIN)" completions bash > "$(call slash,$(PREFIX))/share/bash-completion/completions/envctl"
	mkdir -p "$(call slash,$(PREFIX))/share/zsh/site-functions"
	"./$(BIN)" completions zsh > "$(call slash,$(PREFIX))/share/zsh/site-functions/_envctl"
	mkdir -p "$(call slash,$(PREFIX))/share/fish/vendor_completions.d"
	"./$(BIN)" completions fish > "$(call slash,$(PREFIX))/share/fish/vendor_completions.d/envctl.fish"
	@case "$(PREFIX)" in \
		/usr | /usr/* | /usr/local | /usr/local/*) ;; \
		*) echo "note: add $(PREFIX)/share/zsh/site-functions to \$$fpath before compinit" ;; \
	esac

fmt format:
	dprint fmt

clean:
	rm -f "envctl" "envctl.exe" $(OBJS) $(DEPS)
	rm -f "gen/man" "gen/man.exe" "$(MAN1).gen" "$(STAMP)" "$(STAMP).tmp"
	rm -rf "$(call slash,$(DIST))"