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macOS & iOS Developer Playground
macOS - Development and Darwin
Problem including X11 in XCode.
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<blockquote data-quote="CosmicQuahog" data-source="post: 1503451" data-attributes="member: 297729"><p>I am using XCode and a library called CImg which uses X11. When I run this program:</p><p>include "CImg.h"</p><p>using namespace cimg_library;</p><p>int main() { </p><p>CImg image("snail.bmp"); </p><p>}</p><p></p><p>I get these errors:</p><p></p><p>Undefined symbols: "_XUnlockDisplay", referenced from:</p><p>"_XGetVisualInfo", referenced from: cimg_library::CImgDisplay::_assign(unsigned int, unsigned int, char const*, unsigned int, bool, bool)in main.o</p><p>"_XStoreColors", referenced from: cimg_library::CImgDisplay::_set_colormap(unsigned long&, unsigned int)in main.o</p><p>etc.</p><p></p><p>I think XCode doesn't know where my X11 is, and to be honest I'm not sure I've installed it correctly. I think it is supposed to be in opt/X11 but I don't see it.</p><p>Any idea of how to fix this?</p></blockquote><p></p>
[QUOTE="CosmicQuahog, post: 1503451, member: 297729"] I am using XCode and a library called CImg which uses X11. When I run this program: include "CImg.h" using namespace cimg_library; int main() { CImg image("snail.bmp"); } I get these errors: Undefined symbols: "_XUnlockDisplay", referenced from: "_XGetVisualInfo", referenced from: cimg_library::CImgDisplay::_assign(unsigned int, unsigned int, char const*, unsigned int, bool, bool)in main.o "_XStoreColors", referenced from: cimg_library::CImgDisplay::_set_colormap(unsigned long&, unsigned int)in main.o etc. I think XCode doesn't know where my X11 is, and to be honest I'm not sure I've installed it correctly. I think it is supposed to be in opt/X11 but I don't see it. Any idea of how to fix this? [/QUOTE]
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Problem including X11 in XCode.
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