python - How can I call objective-c from cython? -
cython can write c code, , can cross compile ios;
using pyobjus can call objective-c code, running on osx, not on ios, because python can't import _ctypes.
i know kivy can call coregraphices.framework via cython.
kivy/core/image/img_imageio.pyx
cdef extern "coregraphics/cgdataprovider.h": ctypedef void *cfdataref unsigned char *cfdatagetbyteptr(cfdataref) ctypedef struct cgpoint: float x float y ctypedef struct cgsize: float width float height ctypedef struct cgrect: cgpoint origin cgsize size cgrect cgrectmake(float, float, float, float) this objective-c code
pyobjc.h
#import <foundation/foundation.h> @interface pyobjc : nsobject -(char *)send:(nsstring *)message; -(char *)recv; @property(nonatomic, strong) nsmutablearray *messagequeue; @end pyobjc.m
#import "pyobjc.h" @implementation pyobjc -(id)init{ nslog(@"init"); self.messagequeue = [[nsmutablearray alloc] init]; return self; } -(char *)send:(nsstring *)message{ nslog(@"send: %@", message); [self.messagequeue addobject:message]; return [message utf8string]; } -(char *)recv{ nsstring *stringback = [self.messagequeue objectatindex:0]; nslog(@"recv: %@",stringback); [self.messagequeue removeobjectatindex:0]; return [stringback utf8string]; } @end img_ble.pyx
cdef extern "ble/pyobjc.h": ctypedef char *pyobjcref char *pysend(pyobjcref pyoc, char *message) char *pyrecv(pyobjcref pyoc) def send(): cdef pyobjcref pychar p = send("hello python") pychar = p def recv(): cdef pyobjcref pchar p = recv() pchar = p but can't cross compile ios
building 'kivy.core.image.img_ble' extension /applications/xcode.app/contents/developer/platforms/iphoneos.platform/developer/usr/bin/arm-apple-darwin10-llvm-gcc-4.2 -dndebug -g -o3 -wall -wstrict-prototypes -march=armv7 -mcpu=arm176jzf -mcpu=cortex-a8 -pipe -no-cpp-precomp -miphoneos-version-min=6.1 -o3 -g -i/applications/xcode.app/contents/developer/platforms/iphoneos.platform/developer/sdks/iphoneos6.1.sdk -i/users/ygmpkk/documents/source_learn/kivy-ios/tmp/python-2.7.1/include -i/users/ygmpkk/documents/source_learn/kivy-ios/tmp/python-2.7.1 -c kivy/core/image/img_ble.c -o build/temp.macosx-10.8-x86_64-2.7/kivy/core/image/img_ble.o -isysroot /applications/xcode.app/contents/developer/platforms/iphoneos.platform/developer/sdks/iphoneos6.1.sdk in file included /applications/xcode.app/contents/developer/platforms/iphoneos.platform/developer/sdks/iphoneos6.1.sdk/system/library/frameworks/foundation.framework/headers/foundation.h:8, kivy/core/image/ble/pyobjc.h:9, kivy/core/image/img_ble.c:254: /applications/xcode.app/contents/developer/platforms/iphoneos.platform/developer/sdks/iphoneos6.1.sdk/system/library/frameworks/foundation.framework/headers/nsobjcruntime.h:409: error: stray ‘@’ in program /applications/xcode.app/contents/developer/platforms/iphoneos.platform/developer/sdks/iphoneos6.1.sdk/system/library/frameworks/foundation.framework/headers/nsobjcruntime.h:409: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘nsstring’ /applications/xcode.app/contents/developer/platforms/iphoneos.platform/developer/sdks/iphoneos6.1.sdk/system/library/frameworks/foundation.framework/headers/nsobjcruntime.h:411: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘*’ token /applications/xcode.app/contents/developer/platforms/iphoneos.platform/developer/sdks/iphoneos6.1.sdk/system/library/frameworks/foundation.framework/headers/nsobjcruntime.h:412: error: expected ‘)’ before ‘*’ token /applications/xcode.app/contents/developer/platforms/iphoneos.platform/developer/sdks/iphoneos6.1.sdk/system/library/frameworks/foundation.framework/headers/nsobjcruntime.h:414: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘*’ token /applications/xcode.app/contents/developer/platforms/iphoneos.platform/developer/sdks/iphoneos6.1.sdk/system/library/frameworks/foundation.framework/headers/nsobjcruntime.h:415: error: expected ‘)’ before ‘*’ token /applications/xcode.app/contents/developer/platforms/iphoneos.platform/developer/sdks/iphoneos6.1.sdk/system/library/frameworks/foundation.framework/headers/nsobjcruntime.h:417: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘*’ token /applications/xcode.app/contents/developer/platforms/iphoneos.platform/developer/sdks/iphoneos6.1.sdk/system/library/frameworks/foundation.framework/headers/nsobjcruntime.h:418: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘*’ token /applications/xcode.app/contents/developer/platforms/iphoneos.platform/developer/sdks/iphoneos6.1.sdk/system/library/frameworks/foundation.framework/headers/nsobjcruntime.h:422: error: expected ‘)’ before ‘*’ token /applications/xcode.app/contents/developer/platforms/iphoneos.platform/developer/sdks/iphoneos6.1.sdk/system/library/frameworks/foundation.framework/headers/nsobjcruntime.h:423: error: expected ‘)’ before ‘*’ token in file included /applications/xcode.app/contents/developer/platforms/iphoneos.platform/developer/sdks/iphoneos6.1.sdk/system/library/frameworks/foundation.framework/headers/nsobject.h:6, /applications/xcode.app/contents/developer/platforms/iphoneos.platform/developer/sdks/iphoneos6.1.sdk/system/library/frameworks/foundation.framework/headers/nsarray.h:5, /applications/xcode.app/contents/developer/platforms/iphoneos.platform/developer/sdks/iphoneos6.1.sdk/system/library/frameworks/foundation.framework/headers/foundation.h:10,
your compiler didn't detected code want compile objective-c. can:
- rename generated cython file
.c.m - or, make
.hobjective-c free, ie, create c method , hide objective-c complexity.mof library only. - or, pybojus directly?
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