# Check that pkg-config is available and that the libbsd-dev package is installed
# If one of these is missing, error out
# FGH 2026-03-08
ifneq ($(MAKECMDGOALS),clean)
  ifneq ($(MAKECMDGOALS),cleanup)

    CHK_PKG_CONFIG := $(shell /bin/sh -c "command -v pkg-config")
    ifeq ($(CHK_PKG_CONFIG),)
        # pkg-config not found, print an error
        $(error "pkg-config not found. Please install it to build this project.")
    endif

    CHK_LIBBSD_DEV :=  $(shell pkg-config --exists libbsd-overlay && echo true)
    ifneq ($(CHK_LIBBSD_DEV),true)
      $(error "libbsd-dev (or libbsd-devel) package not found. Please install it to build this project.")
    endif

    BSD_CFLAGS := $(shell pkg-config --cflags libbsd-overlay)

    BSD_LDFLAGS := $(shell pkg-config --libs libbsd-overlay)

  endif  # clean
endif  # cleanup