From c2b0355b0de23f6ec83b5fa5be038bcce208e26f Mon Sep 17 00:00:00 2001
From: David Robillard <d@drobilla.net>
Date: Sat, 15 Sep 2018 14:51:03 +0200
Subject: Squashed 'waflib/' content from commit 982416b

git-subtree-dir: waflib
git-subtree-split: 982416b8a6c6728e200243e1be3ab60435c08830
---
 Tools/compiler_fc.py | 73 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 73 insertions(+)
 create mode 100644 Tools/compiler_fc.py

(limited to 'Tools/compiler_fc.py')

diff --git a/Tools/compiler_fc.py b/Tools/compiler_fc.py
new file mode 100644
index 0000000..96b58e7
--- /dev/null
+++ b/Tools/compiler_fc.py
@@ -0,0 +1,73 @@
+#!/usr/bin/env python
+# encoding: utf-8
+
+import re
+from waflib import Utils, Logs
+from waflib.Tools import fc
+
+fc_compiler = {
+	'win32'  : ['gfortran','ifort'],
+	'darwin' : ['gfortran', 'g95', 'ifort'],
+	'linux'  : ['gfortran', 'g95', 'ifort'],
+	'java'   : ['gfortran', 'g95', 'ifort'],
+	'default': ['gfortran'],
+	'aix'    : ['gfortran']
+}
+"""
+Dict mapping the platform names to lists of names of Fortran compilers to try, in order of preference::
+
+	from waflib.Tools.compiler_c import c_compiler
+	c_compiler['linux'] = ['gfortran', 'g95', 'ifort']
+"""
+
+def default_compilers():
+	build_platform = Utils.unversioned_sys_platform()
+	possible_compiler_list = fc_compiler.get(build_platform, fc_compiler['default'])
+	return ' '.join(possible_compiler_list)
+
+def configure(conf):
+	"""
+	Detects a suitable Fortran compiler
+
+	:raises: :py:class:`waflib.Errors.ConfigurationError` when no suitable compiler is found
+	"""
+	try:
+		test_for_compiler = conf.options.check_fortran_compiler or default_compilers()
+	except AttributeError:
+		conf.fatal("Add options(opt): opt.load('compiler_fc')")
+	for compiler in re.split('[ ,]+', test_for_compiler):
+		conf.env.stash()
+		conf.start_msg('Checking for %r (Fortran compiler)' % compiler)
+		try:
+			conf.load(compiler)
+		except conf.errors.ConfigurationError as e:
+			conf.env.revert()
+			conf.end_msg(False)
+			Logs.debug('compiler_fortran: %r', e)
+		else:
+			if conf.env.FC:
+				conf.end_msg(conf.env.get_flat('FC'))
+				conf.env.COMPILER_FORTRAN = compiler
+				conf.env.commit()
+				break
+			conf.env.revert()
+			conf.end_msg(False)
+	else:
+		conf.fatal('could not configure a Fortran compiler!')
+
+def options(opt):
+	"""
+	This is how to provide compiler preferences on the command-line::
+
+		$ waf configure --check-fortran-compiler=ifort
+	"""
+	test_for_compiler = default_compilers()
+	opt.load_special_tools('fc_*.py')
+	fortran_compiler_opts = opt.add_option_group('Configuration options')
+	fortran_compiler_opts.add_option('--check-fortran-compiler', default=None,
+			help='list of Fortran compiler to try [%s]' % test_for_compiler,
+		dest="check_fortran_compiler")
+
+	for x in test_for_compiler.split():
+		opt.load('%s' % x)
+
-- 
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