# Convenience shortcuts only; CMakeLists.txt owns the build.
.DEFAULT_GOAL := all
# CMake handles parallel compilation; serialize separate wrapper goals.
.NOTPARALLEL:

CMAKE ?= cmake
CTEST ?= ctest
BUILD_DIR ?= build
BUILD_TYPE ?= Debug
JOBS ?= 4
CMAKE_ARGS ?=
CTEST_ARGS ?=

.PHONY: all build configure test check gui run clean help
all: build

configure:
	$(CMAKE) -S . -B "$(BUILD_DIR)" -DCMAKE_BUILD_TYPE="$(BUILD_TYPE)" $(CMAKE_ARGS)

build: configure
	$(CMAKE) --build "$(BUILD_DIR)" --config "$(BUILD_TYPE)" --parallel "$(JOBS)"

test: build
	$(CTEST) --test-dir "$(BUILD_DIR)" --build-config "$(BUILD_TYPE)" --output-on-failure $(CTEST_ARGS)

check: test

gui: configure
	$(CMAKE) --build "$(BUILD_DIR)" --config "$(BUILD_TYPE)" --target xtc --parallel "$(JOBS)"

run: gui
	"$(abspath $(BUILD_DIR))/xtc"

# Keep the CMake cache; never recursively delete a caller-supplied path.
clean:
	@if [ -f "$(BUILD_DIR)/CMakeCache.txt" ]; then \
		$(CMAKE) --build "$(BUILD_DIR)" --config "$(BUILD_TYPE)" --target clean; \
	fi

help:
	@echo 'make [build]  Configure and compile (default)'
	@echo 'make configure Configure only'
	@echo 'make test     Build, then run CTest (check is an alias)'
	@echo 'make gui/run  Build the FLTK app / build and launch it'
	@echo 'make clean    Clean products, retaining the CMake cache'
	@echo 'Overrides: BUILD_DIR=build BUILD_TYPE=Debug JOBS=4 CMAKE_ARGS=... CTEST_ARGS=...'