[PATCH v4] glibcextract.py: Add compile_c_snippet
Adhemerval Zanella Netto
adhemerval.zanella@linaro.org
Thu Aug 11 15:46:39 GMT 2022
On 11/08/22 11:54, Florian Weimer wrote:
> * Adhemerval Zanella:
>
>> It might be used on tests to check if a snippet build with the provided
>> compiler and flags.
>> ---
>> scripts/glibcextract.py | 18 ++++++++++++++++++
>> 1 file changed, 18 insertions(+)
>>
>> diff --git a/scripts/glibcextract.py b/scripts/glibcextract.py
>> index 43ab58ffe2..33463087da 100644
>> --- a/scripts/glibcextract.py
>> +++ b/scripts/glibcextract.py
>> @@ -17,6 +17,7 @@
>> # License along with the GNU C Library; if not, see
>> # <https://www.gnu.org/licenses/>.
>>
>> +import collections
>> import os.path
>> import re
>> import subprocess
>> @@ -173,3 +174,20 @@ def compare_macro_consts(source_1, source_2, cc, macro_re, exclude_re=None,
>> if not allow_extra_2:
>> ret = 1
>> return ret
>> +
>> +CompileResult = collections.namedtuple("CompileResult", "returncode output")
>> +
>> +def compile_c_snippet(snippet, cc, extra_cc_args=''):
>> + """Compile and return whether the SNIPPET can be build with CC along
>> + EXTRA_CC_ARGS compiler flags. Return a CompileResult with RETURNCODE
>> + being 0 for success, or the failure value and the compiler output.
>> + """
>> + with tempfile.TemporaryDirectory() as temp_dir:
>> + c_file_name = os.path.join(temp_dir, 'test.c')
>> + obj_file_name = os.path.join(temp_dir, 'test.o')
>> + with open(c_file_name, 'w') as c_file:
>> + c_file.write(snippet + '\n')
>> + cmd = cc.split() + extra_cc_args.split() + ['-c', '-o', obj_file_name,
>> + c_file_name]
>> + r = subprocess.run(cmd, capture_output=True)
>> + return CompileResult(r.returncode, r.stderr)
>
> Meh.
>
> Traceback (most recent call last):
> File "../sysdeps/unix/sysv/linux/tst-mount-compile.py", line 66, in <module>
> main()
> File "../sysdeps/unix/sysv/linux/tst-mount-compile.py", line 38, in main
> args.cc).returncode != 0:
> File "/home/bmg/src/glibc/scripts/glibcextract.py", line 192, in compile_c_snippet
> r = subprocess.run(cmd, capture_output=True)
> File "/usr/lib64/python3.6/subprocess.py", line 423, in run
> with Popen(*popenargs, **kwargs) as process:
> TypeError: __init__() got an unexpected keyword argument 'capture_output'
>
> That's with Python 3.6.
Sigh, it was added on Python 3.7. We will need to use stderr=PIPE instead.
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