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pzlvv

Member

Registered: 2012-12-07

Posts: 9

Unknown compiler flag: -D_FORTIFY_SOURCE=2

Hi, I'm installing pocketsphinx from AUR and I got an error "Unknown compiler flag: -D_FORTIFY_SOURCE=2".

Here're some details:

cython -o pocketsphinx.c pocketsphinx.pyx -D_FORTIFY_SOURCE=2 -I/usr/include/python2.7 -I/usr/include/python2.7 -I/usr/include/sphinxbase  -I/python
Unknown compiler flag: -D_FORTIFY_SOURCE=2
Makefile:601: recipe for target 'pocketsphinx.c' failed
make[1]: *** [pocketsphinx.c] Error 1

I know nothing about cython and can anybody give some suggestions?

karol

Archivist

Registered: 2009-05-06

Posts: 25,440

Re: Unknown compiler flag: -D_FORTIFY_SOURCE=2

Another user got the same error, but got no response so far https://aur.archlinux.org/packages/pocketsphinx/

Scimmia

Fellow

Registered: 2012-09-01

Posts: 13,694

Re: Unknown compiler flag: -D_FORTIFY_SOURCE=2

Quick solution would be adding "unset CPPFLAGS" to the PKGBUILD.

That's not really a good option, though. I'm thinking the build system needs patched to not include $CPPFLAGS when using cython.

karol

Archivist

Registered: 2009-05-06

Posts: 25,440

Re: Unknown compiler flag: -D_FORTIFY_SOURCE=2

The only somewhat related thing I could find was https://mailman.archlinux.org/pipermail … 24788.html but it talks about the need of '-O2', not the '-D_FORTIFY_SOURCE=2' and not the CPPFLAGS itself.

I think that adding 'unset CPPFLAGS' to some PKGBUILDs may be the right way.

Scimmia

Fellow

Registered: 2012-09-01

Posts: 13,694

Re: Unknown compiler flag: -D_FORTIFY_SOURCE=2

The problem is that then you don't have -D_FORTIFY_SOURCE=2 for when other parts of the software are built with gcc/clang/etc. Not the end of the world, but not ideal.

ackalker

Member

Registered: 2012-11-27

Posts: 201

Re: Unknown compiler flag: -D_FORTIFY_SOURCE=2

Fixing this without unsetting CPPFLAGS for everything else is as easy as adding the following line under the 'find -type f' lines in build():

sed -i '/cython/s/$(CPPFLAGS) //' python/Makefile.am

See my comment on https://aur.archlinux.org/packages/pocketsphinx/

Last edited by ackalker (2013-11-05 18:33:23)