QCC ?= \$(shell command -v qcc 2>/dev/null || { test -n "\$\$BASILISK" && test -x "\$\$BASILISK/qcc" && printf '%s\n' "\$\$BASILISK/qcc"; })
BASILISK ?=
BASILISK_API_HEADER := \$(shell qcc_dir="\$\$(dirname "\$(QCC)")"; \
    for header in "\$(BASILISK)/grid/multigrid-common.h" \
                  "\$(BASILISK)/src/grid/multigrid-common.h" \
                  "\$\$qcc_dir/grid/multigrid-common.h"; do \
        test -f "\$\$header" && { printf '%s' "\$\$header"; break; }; \
    done)
BASILISK_API_FLAG := \$(shell if test -z "\$(BASILISK_API_HEADER)"; then \
    printf '%s' 'BASILISK_HEADER_NOT_FOUND'; \
    elif ! grep -q 'void set_prolongation' "\$(BASILISK_API_HEADER)"; then \
    printf '%s' '-DHYPHAL_LEGACY_BASILISK=1'; \
    fi)
BUILD_DIR ?= build
SOURCE := simulationCases/hyphal-flow.c
TARGET := \$(BUILD_DIR)/hyphal-flow
HEADERS := \$(wildcard src-local/*.h)

.PHONY: all compile-check help

all: \$(TARGET)

\$(TARGET): \$(SOURCE) \$(HEADERS)
    @test -n "\$(QCC)" || { echo "qcc not found in PATH" >&2; exit 2; }
    @test "\$(BASILISK_API_FLAG)" != "BASILISK_HEADER_NOT_FOUND" || { \
        echo "cannot locate Basilisk grid headers; set BASILISK to the source tree" >&2; \
        exit 2; \
    }
    @mkdir -p "\$(BUILD_DIR)"
    "\$(QCC)" -I"\$(CURDIR)/src-local" -Wall -O2 -disable-dimensions \$(BASILISK_API_FLAG) \
        "\$(SOURCE)" -o "\$@" -lm

compile-check:
    @output_root="\$\$(mktemp -d "\$\${TMPDIR:-/tmp}/hyphal-compile-check.XXXXXX")"; \
    trap 'rm -rf "\$\$output_root"' EXIT; \
    bash runSimulation.sh default.params --compile-only \
        --output-root "\$\$output_root"

help:
    @echo "make             Compile the canonical simulation into build/"
    @echo "make compile-check  Compile default.params through runSimulation.sh --compile-only"