# This file is part of the Astrometry.net suite.
# Licensed under a 3-clause BSD style license - see LICENSE

# On by default?  This doesn't seem to work
#SYSTEM_GSL ?= $(shell pkg-config --modversion gsl >/dev/null 2>/dev/null && echo yes)

ifeq ($(SYSTEM_GSL),yes)

GSL_INC ?= $(shell pkg-config --cflags gsl 2>/dev/null)
GSL_LIB ?= $(shell pkg-config --libs   gsl 2>/dev/null)
GSL_SLIB ?=

else

GSL_DIR := $(BASEDIR)/gsl-an
GSL_LIB_FILE := $(GSL_DIR)/libgsl-an.a

# flags needed to compile gsl
GSL_INC ?= -I$(GSL_DIR)

# flags needed to link gsl
GSL_LIB ?=

# file dependencies for GSL
GSL_SLIB ?= $(GSL_LIB_FILE)

$(GSL_LIB_FILE):
	$(MAKE) -C $(GSL_DIR)

endif