On Wed, Nov 23, 2016 at 4:24 AM, Jason Bell <jbell9...@gmail.com> wrote: > Hi - > > The newest version of cygwin with python 2.7.12-1 fails when pip > installing packages that require compilation. For example, pycrypto > fails: > > $ pip install pycrypto > Collecting pycrypto > ....... > building 'Crypto.PublicKey._fastmath' extension > creating build/temp.cygwin-2.6.0-x86_64-2.7 > creating build/temp.cygwin-2.6.0-x86_64-2.7/src > gcc -fno-strict-aliasing -ggdb -pipe -Wimplicit-function-declaration > -fdebug-prefix-map=/usr/src/ports/python/python-2.7.12-1.x86_64/build=/usr/src/debug/python-2.7.12-1 > -fdebug-prefix-map=/usr/src/ports/python/python-2.7.12-1.x86_64/src/Python-2.7.12=/usr/src/debug/python-2.7.12-1 > -fwrapv -Wall -Wstrict-prototypes -std=c99 -O3 -fomit-frame-pointer > -Isrc/ -I/usr/include/ -I/usr/include/python2.7 -c src/_fastmath.c -o > build/temp.cygwin-2.6.0-x86_64-2.7/src/_fastmath.o > In file included from /usr/include/python2.7/Python.h:8:0, > from src/_fastmath.c:31: > /usr/include/python2.7/pyconfig.h:1221:0: warning: "__BSD_VISIBLE" redefined > #define __BSD_VISIBLE 1 > ^ > In file included from /usr/include/sys/config.h:5:0, > from /usr/include/_ansi.h:16, > from /usr/include/stdio.h:29, > from src/_fastmath.c:29: > /usr/include/sys/features.h:250:0: note: this is the location of the > previous definition > #define __BSD_VISIBLE 0 > ^ > In file included from /usr/include/python2.7/pyport.h:332:0, > from /usr/include/python2.7/Python.h:58, > from src/_fastmath.c:31: > /usr/include/sys/time.h:104:34: error: unknown type name ‘u_int’ > bintime_mul(struct bintime *_bt, u_int _x) > ^ > error: command 'gcc' failed with exit status 1 > > ---------------------------------------- > > I can fix these errors by changing __BSD_VISIBLE from 1 to 0 in > /usr/include/python2.7/pyconfig.h. Here's a patch: > > --- pyconfig.h 2016-11-20 09:38:22.434174700 -0500 > +++ pyconfig-bsd-not-visible.h 2016-11-20 09:38:05.391993200 -0500 > @@ -1218,7 +1218,7 @@ > #define _XOPEN_SOURCE_EXTENDED 1 > > /* Define on FreeBSD to activate all library features */ > -#define __BSD_VISIBLE 1 > +#define __BSD_VISIBLE 0 > > /* Define to 1 if type `char' is unsigned and you are not using gcc. */ > #ifndef __CHAR_UNSIGNED__ > > And here's a link to a script that changes the value in one shot: > https://gist.githubusercontent.com/thorrr/271058eeb5f1903213938f89fcbc3a73/raw/15026396047b61102826a8dd92ea591155573f1d/pyconfig-fix.sh > > I can confirm this makes several packages I use often work correctly > but I don't know what the other consequences of changing this variable > are.
FWIW this patch to pycrypto also fixes it: https://git.sagemath.org/sage.git/tree/build/pkgs/pycrypto/patches/cygwin/disable-std-c99.patch?id=aaa9b7fc887b64ba1dba7cba16061f598a097b75 The problem only occurs when trying to build with the C99 standard if Python itself was not. -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
