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check for endianness

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This commit is contained in:
Thomas Nagy 2011-11-19 21:25:58 +01:00
parent bfbbaa2081
commit a2c4801476
2 changed files with 44 additions and 2 deletions
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3
waflib/Tools/c_config.py
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@ -666,7 +666,8 @@ COMPILE_ERRORS = 2
def run_c_code(self, *k, **kw):
"""
Create a temporary build context to execute a build. A reference to that build
context is kept on self.test_bld for debugging purposes.
context is kept on self.test_bld for debugging purposes, and you should not rely
on it too much (read the note on the cache below).
The parameters given in the arguments to this function are passed as arguments for
a single task generator created in the build. Only three parameters are obligatory:

43
waflib/Tools/c_tests.py
View File

@ -6,8 +6,9 @@
Various configuration tests.
"""
from waflib import Task
from waflib.Configure import conf
from waflib.TaskGen import feature, before_method
from waflib.TaskGen import feature, before_method, after_method
import sys
LIB_CODE = '''
@ -174,4 +175,44 @@ def check_large_file(self, **kw):
########################################################################################
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):
color = 'PINK'
def run(self):
txt = self.inputs[0].read(flags='rb')
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):
self.create_task('grep_for_endianness', self.compiled_tasks[0].outputs[0])
@conf
def check_endianness(self):
"""
Execute 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]