Faster-rcnn.pytorch: error: ‘for’ loop initial declarations are only allowed in C99 mode

[chj1933]

/home/chenghj/faster-rcnn.pytorch/lib/model/roi_align/src/roi_align.c:87:5: error: ‘for’ loop initial declarations are only allowed in C99 mode
for (int idx = 0; idx < output_size; ++idx)
^
/home/chenghj/faster-rcnn.pytorch/lib/model/roi_align/src/roi_align.c:87:5: note: use option -std=c99 or -std=gnu99 to compile your code
/home/chenghj/faster-rcnn.pytorch/lib/model/roi_align/src/roi_align.c: In function ‘ROIAlignBackwardCpu’:
/home/chenghj/faster-rcnn.pytorch/lib/model/roi_align/src/roi_align.c:143:0: warning: ignoring #pragma omp parallel [-Wunknown-pragmas]
#pragma omp parallel for
^
/home/chenghj/faster-rcnn.pytorch/lib/model/roi_align/src/roi_align.c:144:5: error: ‘for’ loop initial declarations are only allowed in C99 mode
for (int idx = 0; idx < output_size; ++idx)
^
Traceback (most recent call last):
File "build.py", line 38, in
ffi.build()
File "/usr/local/lib/python2.7/dist-packages/torch/utils/ffi/__init__.py", line 167, in build
_build_extension(ffi, cffi_wrapper_name, target_dir, verbose)
File "/usr/local/lib/python2.7/dist-packages/torch/utils/ffi/__init__.py", line 103, in _build_extension
ffi.compile(tmpdir=tmpdir, verbose=verbose, target=libname)
File "/home/chenghj/.local/lib/python2.7/site-packages/cffi/api.py", line 697, in compile
compiler_verbose=verbose, debug=debug, **kwds)
File "/home/chenghj/.local/lib/python2.7/site-packages/cffi/recompiler.py", line 1520, in recompile
compiler_verbose, debug)
File "/home/chenghj/.local/lib/python2.7/site-packages/cffi/ffiplatform.py", line 22, in compile
outputfilename = _build(tmpdir, ext, compiler_verbose, debug)
File "/home/chenghj/.local/lib/python2.7/site-packages/cffi/ffiplatform.py", line 58, in _build
raise VerificationError('%s: %s' % (e.__class__.__name__, e))
cffi.error.VerificationError: CompileError: command 'x86_64-linux-gnu-gcc' failed with exit status 1

[Tsingzao]

I solved this by

int idx;
for (idx = 0; idx < output_size; ++idx)

[chj1933]

thanks @Tsingzao I have solved this by
int idx;
for (idx = 0; idx < output_size; ++idx)
but appear
/home/chenghj/faster-rcnn.pytorch/lib/model/roi_align/src/roi_align.c: In function ‘ROIAlignForwardCpu’:
/home/chenghj/faster-rcnn.pytorch/lib/model/roi_align/src/roi_align.c:86:0: warning: ignoring #pragma omp parallel [-Wunknown-pragmas]
#pragma omp parallel for
^
/home/chenghj/faster-rcnn.pytorch/lib/model/roi_align/src/roi_align.c:88:14: error: redeclaration of ‘idx’ with no linkage
for (int idx = 0; idx < output_size; ++idx)
^
/home/chenghj/faster-rcnn.pytorch/lib/model/roi_align/src/roi_align.c:87:9: note: previous declaration of ‘idx’ was here
int idx;
^
/home/chenghj/faster-rcnn.pytorch/lib/model/roi_align/src/roi_align.c:88:5: error: ‘for’ loop initial declarations are only allowed in C99 mode
for (int idx = 0; idx < output_size; ++idx)
^
/home/chenghj/faster-rcnn.pytorch/lib/model/roi_align/src/roi_align.c:88:5: note: use option -std=c99 or -std=gnu99 to compile your code
/home/chenghj/faster-rcnn.pytorch/lib/model/roi_align/src/roi_align.c: In function ‘ROIAlignBackwardCpu’:
/home/chenghj/faster-rcnn.pytorch/lib/model/roi_align/src/roi_align.c:144:0: warning: ignoring #pragma omp parallel [-Wunknown-pragmas]
#pragma omp parallel for
^
/home/chenghj/faster-rcnn.pytorch/lib/model/roi_align/src/roi_align.c:146:14: error: redeclaration of ‘idx’ with no linkage
for (int idx = 0; idx < output_size; ++idx)
^
/home/chenghj/faster-rcnn.pytorch/lib/model/roi_align/src/roi_align.c:145:9: note: previous declaration of ‘idx’ was here
int idx;
^
/home/chenghj/faster-rcnn.pytorch/lib/model/roi_align/src/roi_align.c:146:5: error: ‘for’ loop initial declarations are only allowed in C99 mode
for (int idx = 0; idx < output_size; ++idx)
^
Traceback (most recent call last):
File "build.py", line 38, in
ffi.build()
File "/usr/local/lib/python2.7/dist-packages/torch/utils/ffi/__init__.py", line 167, in build
_build_extension(ffi, cffi_wrapper_name, target_dir, verbose)
File "/usr/local/lib/python2.7/dist-packages/torch/utils/ffi/__init__.py", line 103, in _build_extension
ffi.compile(tmpdir=tmpdir, verbose=verbose, target=libname)
File "/home/chenghj/.local/lib/python2.7/site-packages/cffi/api.py", line 697, in compile
compiler_verbose=verbose, debug=debug, **kwds)
File "/home/chenghj/.local/lib/python2.7/site-packages/cffi/recompiler.py", line 1520, in recompile
compiler_verbose, debug)
File "/home/chenghj/.local/lib/python2.7/site-packages/cffi/ffiplatform.py", line 22, in compile
outputfilename = _build(tmpdir, ext, compiler_verbose, debug)
File "/home/chenghj/.local/lib/python2.7/site-packages/cffi/ffiplatform.py", line 58, in _build
raise VerificationError('%s: %s' % (e.__class__.__name__, e))
cffi.error.VerificationError: CompileError: command 'x86_64-linux-gnu-gcc' failed with exit status 1

[Tsingzao]

@chj1933 Maybe a redundant 'int' in the for loop?

It should be

int idx;
for (idx = 0; idx < output_size; ++idx)

instead of

int idx;
for (int idx = 0; idx < output_size; ++idx)

[chj1933]

@Tsingzao got it ,thanks. Excuse me again , can you send me a resnet101_caffe.pth? I don't know why I can't download it. MY email is [email protected]

[jwyang]

glad you guys solved this, closing this issue