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authorDavid Robillard <d@drobilla.net>2018-09-15 14:51:03 +0200
committerDavid Robillard <d@drobilla.net>2018-09-15 14:51:03 +0200
commitbe0edc0483a9b0b16171e0a7624e1cac9750d8e0 (patch)
tree2f639b07d13e56ce068347304bd6d4bf89c7ed2c /waflib/Tools/c_tests.py
parentd3e4e496a19a266ffac7c04fb7d54926e39f55a2 (diff)
parentc2b0355b0de23f6ec83b5fa5be038bcce208e26f (diff)
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Merge commit 'c2b0355b0de23f6ec83b5fa5be038bcce208e26f' as 'waflib'
Diffstat (limited to 'waflib/Tools/c_tests.py')
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diff --git a/waflib/Tools/c_tests.py b/waflib/Tools/c_tests.py
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+#!/usr/bin/env python
+# encoding: utf-8
+# Thomas Nagy, 2016-2018 (ita)
+
+"""
+Various configuration tests.
+"""
+
+from waflib import Task
+from waflib.Configure import conf
+from waflib.TaskGen import feature, before_method, after_method
+
+LIB_CODE = '''
+#ifdef _MSC_VER
+#define testEXPORT __declspec(dllexport)
+#else
+#define testEXPORT
+#endif
+testEXPORT int lib_func(void) { return 9; }
+'''
+
+MAIN_CODE = '''
+#ifdef _MSC_VER
+#define testEXPORT __declspec(dllimport)
+#else
+#define testEXPORT
+#endif
+testEXPORT int lib_func(void);
+int main(int argc, char **argv) {
+ (void)argc; (void)argv;
+ return !(lib_func() == 9);
+}
+'''
+
+@feature('link_lib_test')
+@before_method('process_source')
+def link_lib_test_fun(self):
+ """
+ The configuration test :py:func:`waflib.Configure.run_build` declares a unique task generator,
+ so we need to create other task generators from here to check if the linker is able to link libraries.
+ """
+ def write_test_file(task):
+ task.outputs[0].write(task.generator.code)
+
+ rpath = []
+ if getattr(self, 'add_rpath', False):
+ rpath = [self.bld.path.get_bld().abspath()]
+
+ mode = self.mode
+ m = '%s %s' % (mode, mode)
+ ex = self.test_exec and 'test_exec' or ''
+ bld = self.bld
+ bld(rule=write_test_file, target='test.' + mode, code=LIB_CODE)
+ bld(rule=write_test_file, target='main.' + mode, code=MAIN_CODE)
+ bld(features='%sshlib' % m, source='test.' + mode, target='test')
+ bld(features='%sprogram %s' % (m, ex), source='main.' + mode, target='app', use='test', rpath=rpath)
+
+@conf
+def check_library(self, mode=None, test_exec=True):
+ """
+ Checks if libraries can be linked with the current linker. Uses :py:func:`waflib.Tools.c_tests.link_lib_test_fun`.
+
+ :param mode: c or cxx or d
+ :type mode: string
+ """
+ if not mode:
+ mode = 'c'
+ if self.env.CXX:
+ mode = 'cxx'
+ self.check(
+ compile_filename = [],
+ features = 'link_lib_test',
+ msg = 'Checking for libraries',
+ mode = mode,
+ test_exec = test_exec)
+
+########################################################################################
+
+INLINE_CODE = '''
+typedef int foo_t;
+static %s foo_t static_foo () {return 0; }
+%s foo_t foo () {
+ return 0;
+}
+'''
+INLINE_VALUES = ['inline', '__inline__', '__inline']
+
+@conf
+def check_inline(self, **kw):
+ """
+ Checks for the right value for inline macro.
+ Define INLINE_MACRO to 1 if the define is found.
+ If the inline macro is not 'inline', add a define to the ``config.h`` (#define inline __inline__)
+
+ :param define_name: define INLINE_MACRO by default to 1 if the macro is defined
+ :type define_name: string
+ :param features: by default *c* or *cxx* depending on the compiler present
+ :type features: list of string
+ """
+ self.start_msg('Checking for inline')
+
+ if not 'define_name' in kw:
+ kw['define_name'] = 'INLINE_MACRO'
+ if not 'features' in kw:
+ if self.env.CXX:
+ kw['features'] = ['cxx']
+ else:
+ kw['features'] = ['c']
+
+ for x in INLINE_VALUES:
+ kw['fragment'] = INLINE_CODE % (x, x)
+
+ try:
+ self.check(**kw)
+ except self.errors.ConfigurationError:
+ continue
+ else:
+ self.end_msg(x)
+ if x != 'inline':
+ self.define('inline', x, quote=False)
+ return x
+ self.fatal('could not use inline functions')
+
+########################################################################################
+
+LARGE_FRAGMENT = '''#include <unistd.h>
+int main(int argc, char **argv) {
+ (void)argc; (void)argv;
+ return !(sizeof(off_t) >= 8);
+}
+'''
+
+@conf
+def check_large_file(self, **kw):
+ """
+ Checks for large file support and define the macro HAVE_LARGEFILE
+ The test is skipped on win32 systems (DEST_BINFMT == pe).
+
+ :param define_name: define to set, by default *HAVE_LARGEFILE*
+ :type define_name: string
+ :param execute: execute the test (yes by default)
+ :type execute: bool
+ """
+ if not 'define_name' in kw:
+ kw['define_name'] = 'HAVE_LARGEFILE'
+ if not 'execute' in kw:
+ kw['execute'] = True
+
+ if not 'features' in kw:
+ if self.env.CXX:
+ kw['features'] = ['cxx', 'cxxprogram']
+ else:
+ kw['features'] = ['c', 'cprogram']
+
+ kw['fragment'] = LARGE_FRAGMENT
+
+ kw['msg'] = 'Checking for large file support'
+ ret = True
+ try:
+ if self.env.DEST_BINFMT != 'pe':
+ ret = self.check(**kw)
+ except self.errors.ConfigurationError:
+ pass
+ else:
+ if ret:
+ return True
+
+ kw['msg'] = 'Checking for -D_FILE_OFFSET_BITS=64'
+ kw['defines'] = ['_FILE_OFFSET_BITS=64']
+ try:
+ ret = self.check(**kw)
+ except self.errors.ConfigurationError:
+ pass
+ else:
+ self.define('_FILE_OFFSET_BITS', 64)
+ return ret
+
+ self.fatal('There is no support for large files')
+
+########################################################################################
+
+ENDIAN_FRAGMENT = '''
+short int ascii_mm[] = { 0x4249, 0x4765, 0x6E44, 0x6961, 0x6E53, 0x7953, 0 };
+short int ascii_ii[] = { 0x694C, 0x5454, 0x656C, 0x6E45, 0x6944, 0x6E61, 0 };
+int use_ascii (int i) {
+ return ascii_mm[i] + ascii_ii[i];
+}
+short int ebcdic_ii[] = { 0x89D3, 0xE3E3, 0x8593, 0x95C5, 0x89C4, 0x9581, 0 };
+short int ebcdic_mm[] = { 0xC2C9, 0xC785, 0x95C4, 0x8981, 0x95E2, 0xA8E2, 0 };
+int use_ebcdic (int i) {
+ return ebcdic_mm[i] + ebcdic_ii[i];
+}
+extern int foo;
+'''
+
+class grep_for_endianness(Task.Task):
+ """
+ Task that reads a binary and tries to determine the endianness
+ """
+ color = 'PINK'
+ def run(self):
+ txt = self.inputs[0].read(flags='rb').decode('latin-1')
+ if txt.find('LiTTleEnDian') > -1:
+ self.generator.tmp.append('little')
+ elif txt.find('BIGenDianSyS') > -1:
+ self.generator.tmp.append('big')
+ else:
+ return -1
+
+@feature('grep_for_endianness')
+@after_method('process_source')
+def grep_for_endianness_fun(self):
+ """
+ Used by the endianness configuration test
+ """
+ self.create_task('grep_for_endianness', self.compiled_tasks[0].outputs[0])
+
+@conf
+def check_endianness(self):
+ """
+ Executes a configuration test to determine the endianness
+ """
+ tmp = []
+ def check_msg(self):
+ return tmp[0]
+ self.check(fragment=ENDIAN_FRAGMENT, features='c grep_for_endianness',
+ msg='Checking for endianness', define='ENDIANNESS', tmp=tmp, okmsg=check_msg)
+ return tmp[0]
+