# swipl supports arch for which libc fenv.h provides all four macros:
# FE_DOWNWARD, FE_TONEAREST, FE_TOWARDZERO, FE_UPWARD
# See for example in glibc https://sourceware.org/git/glibc.git
# git grep -E '^[[:space:]]*#[[:space:]]*define[[:space:]]+FE_(TONEAREST|UPWARD|DOWNWARD|TOWARDZERO)' sysdeps/
config BR2_PACKAGE_SWIPL_ARCH_SUPPORTS
	bool
	default y if BR2_aarch64 || BR2_aarch64_be
	default y if BR2_arceb || BR2_arcle
	default y if BR2_arm || BR2_armeb
	default y if BR2_i386
	default y if BR2_m68k
	# BR2_microblaze has only FE_TONEAREST
	default y if BR2_mips || BR2_mipsel || BR2_mips64 || BR2_mips64el
	default y if BR2_or1k
	default y if BR2_powerpc || BR2_powerpc64 || BR2_powerpc64le
	default y if BR2_riscv
	default y if BR2_s390x
	# BR2_sh has only FE_{TONEAREST,TOWARDZERO}
	default y if BR2_sparc || BR2_sparc64
	default y if BR2_x86_64
	# BR2_xtensa supports only uclibc which does not have fenv.h

config BR2_PACKAGE_SWIPL
	bool "swipl"
	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_5 # __has_attribute()
	depends on BR2_PACKAGE_SWIPL_ARCH_SUPPORTS
	# swipl needs fenv.h which is not provided by uclibc
	depends on !BR2_TOOLCHAIN_USES_UCLIBC
	select BR2_PACKAGE_ZLIB
	help
	  SWI-Prolog offers a comprehensive free Prolog
	  environment. Since its start in 1987, SWI-Prolog development
	  has been driven by the needs of real world
	  applications. SWI-Prolog is widely used in research and
	  education as well as commercial applications.

	  https://www.swi-prolog.org

comment "swipl needs a glibc or musl toolchain w/ gcc >= 5"
	depends on BR2_PACKAGE_SWIPL_ARCH_SUPPORTS
	depends on !BR2_TOOLCHAIN_GCC_AT_LEAST_5 || \
		BR2_TOOLCHAIN_USES_UCLIBC