package/swipl: new package

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.

Signed-off-by: Julien Olivain <ju.o@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

DEVELOPERS

@@ -1818,6 +1818,7 @@ F:	package/python-pyalsa/
 F:	package/python-spake2/
 F:	package/rdma-core/
 F:	package/riscv-isa-sim/
+F:	package/swipl/
 F:	package/tig/
 F:	package/tinycompress/
 F:	package/z3/
@@ -1962,6 +1963,8 @@ F:	support/testing/tests/package/test_sox.py
 F:	support/testing/tests/package/test_sqlite.py
 F:	support/testing/tests/package/test_strace.py
 F:	support/testing/tests/package/test_stress_ng.py
+F:	support/testing/tests/package/test_swipl.py
+F:	support/testing/tests/package/test_swipl/
 F:	support/testing/tests/package/test_tcl.py
 F:	support/testing/tests/package/test_tcl/
 F:	support/testing/tests/package/test_tcpdump.py

package/Config.in

@@ -1476,6 +1476,7 @@ endmenu
 endif
 	source "package/quickjs/Config.in"
 	source "package/ruby/Config.in"
+	source "package/swipl/Config.in"
 	source "package/tcl/Config.in"
 if BR2_PACKAGE_TCL
 menu "Tcl libraries/modules"

package/swipl/Config.in

@@ -0,0 +1,43 @@
+# 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
+	# BR2_nios2 has only FE_TONEAREST
+	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

package/swipl/swipl.hash

@@ -0,0 +1,4 @@
+# From https://www.swi-prolog.org/download/stable
+sha256  10d90b15734d14d0d7972dc11a3584defd300d65a9f0b1185821af8c3896da5e  swipl-9.2.0.tar.gz
+# Locally calculated
+sha256  770594d0f4463b71f1485f00e4bc5cf4b6f667d62ef6bc9bde2fee236541992a  LICENSE

package/swipl/swipl.mk

@@ -0,0 +1,55 @@
+################################################################################
+#
+# swipl
+#
+################################################################################
+
+SWIPL_VERSION = 9.2.0
+SWIPL_SITE = https://www.swi-prolog.org/download/stable/src
+SWIPL_LICENSE = BSD-2-Clause
+SWIPL_LICENSE_FILES = LICENSE
+
+SWIPL_DEPENDENCIES = host-swipl zlib
+
+# A host-swipl is needed to compile the target prolog boot
+# boot.prl file.
+HOST_SWIPL_CONF_OPTS = \
+	-DBUILD_PDF_DOCUMENTATION=OFF \
+	-DSWIPL_PACKAGES=OFF \
+	-DUSE_GMP=OFF \
+	-DUSE_TCMALLOC=OFF
+
+# swipl uses cmake macros try_run() and check_c_source_runs(), which
+# are not suitable for cross compilation. We add results in cache to
+# avoid running those tests. The SWIPL_NATIVE_FRIEND variable, is
+# meant to point to build directory of a host native swipl, rather
+# than the binary itself. The Cmake macro will append "src/swipl" to
+# the path set to this variable. Therefore, we cannot use the host
+# "swipl" binary installed in $(HOST_DIR)/usr/bin.
+SWIPL_CONF_OPTS = \
+	-DBUILD_PDF_DOCUMENTATION=OFF \
+	-DHAVE_WEAK_ATTRIBUTE=1 \
+	-DLLROUND_OK=1 \
+	-DMODF_OK=1 \
+	-DQSORT_R_GNU=1 \
+	-DSWIPL_NATIVE_FRIEND=$(HOST_SWIPL_SRCDIR) \
+	-DSWIPL_PACKAGES=OFF \
+	-DUSE_TCMALLOC=OFF
+
+ifeq ($(BR2_TOOLCHAIN_HAS_LIBATOMIC),y)
+SWIPL_CONF_OPTS += -DCMAKE_EXE_LINKER_FLAGS=-latomic
+endif
+
+ifeq ($(BR2_PACKAGE_GMP),y)
+SWIPL_CONF_OPTS += -DUSE_GMP=ON
+SWIPL_DEPENDENCIES += gmp
+else
+SWIPL_CONF_OPTS += -DUSE_GMP=OFF
+endif
+
+ifeq ($(BR2_PACKAGE_NCURSES),y)
+SWIPL_DEPENDENCIES += ncurses
+endif
+
+$(eval $(cmake-package))
+$(eval $(host-cmake-package))