Merge branch 'flang' into 'master'

fc: add support for the flang compiler

See merge request ita1024/waf!2372

waflib/extras/fc_flang.py

@@ -0,0 +1,96 @@
+#! /usr/bin/env python
+# encoding: utf-8
+# Detection of the flang Fortran compiler
+
+import re
+from waflib.Tools import fc,fc_config,fc_scan
+from waflib.Configure import conf
+from waflib.Tools.compiler_fc import fc_compiler
+fc_compiler['linux'].append('fc_flang')
+
+@conf
+def find_flang(conf):
+	fc = conf.find_program(['flang'], var='FC')
+	conf.get_nfort_version(fc)
+	conf.env.FC_NAME = 'FLANG'
+	conf.env.FC_MOD_CAPITALIZATION = 'lower'
+
+@conf
+def flang_flags(conf):
+	v = conf.env
+	v['_FCMODOUTFLAGS'] = []
+	v['FCFLAGS_DEBUG'] = []
+	v['FCFLAGS_fcshlib'] = []
+	v['LINKFLAGS_fcshlib'] = []
+	v['FCSTLIB_MARKER'] = ''
+	v['FCSHLIB_MARKER'] = ''
+
+@conf
+def get_flang_version(conf, fc):
+	cmd = fc + ['-dM', '-E', '-']
+	env = conf.env.env or None
+
+	try:
+		out, err = conf.cmd_and_log(cmd, output=0, input='\n'.encode(), env=env)
+	except Errors.WafError:
+		conf.fatal('Could not determine the FLANG compiler version for %r' % cmd)
+	if out.find('__clang__') < 0:
+		conf.fatal('Not a flang compiler')
+
+	k = {}
+	out = out.splitlines()
+	for line in out:
+		lst = shlex.split(line)
+		if len(lst)>2:
+			key = lst[1]
+			val = lst[2]
+			k[key] = val
+
+	def isD(var):
+		return var in k
+
+	# Some documentation is available at http://predef.sourceforge.net
+	# The names given to DEST_OS must match what Utils.unversioned_sys_platform() returns.
+	if not conf.env.DEST_OS:
+		conf.env.DEST_OS = ''
+	for i in MACRO_TO_DESTOS:
+		if isD(i):
+			conf.env.DEST_OS = MACRO_TO_DESTOS[i]
+			break
+	else:
+		if isD('__APPLE__') and isD('__MACH__'):
+			conf.env.DEST_OS = 'darwin'
+		elif isD('__unix__'): # unix must be tested last as it's a generic fallback
+			conf.env.DEST_OS = 'generic'
+
+	if isD('__ELF__'):
+		conf.env.DEST_BINFMT = 'elf'
+	elif isD('__WINNT__') or isD('__CYGWIN__') or isD('_WIN32'):
+		conf.env.DEST_BINFMT = 'pe'
+		if not conf.env.IMPLIBDIR:
+			conf.env.IMPLIBDIR = conf.env.LIBDIR # for .lib or .dll.a files
+		conf.env.LIBDIR = conf.env.BINDIR
+	elif isD('__APPLE__'):
+		conf.env.DEST_BINFMT = 'mac-o'
+
+	if not conf.env.DEST_BINFMT:
+		# Infer the binary format from the os name.
+		conf.env.DEST_BINFMT = Utils.destos_to_binfmt(conf.env.DEST_OS)
+
+	for i in MACRO_TO_DEST_CPU:
+		if isD(i):
+			conf.env.DEST_CPU = MACRO_TO_DEST_CPU[i]
+			break
+
+	Logs.debug('fc_flang: dest platform: ' + ' '.join([conf.env[x] or '?' for x in ('DEST_OS', 'DEST_BINFMT', 'DEST_CPU')]))
+	conf.env.FC_VERSION = (k['__clang_major__'], k['__clang_minor__'], k['__clang_patchlevel__'])
+
+	return k
+
+
+def configure(conf):
+	conf.find_flang()
+	conf.find_ar()
+	conf.fc_flags()
+	conf.fc_add_flags()
+	conf.flang_flags()