Source code for waflib.Tools.c_tests

#!/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);
}
'''



[docs]@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']
[docs]@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); } '''
[docs]@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; '''
[docs]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
[docs]@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])
[docs]@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]