Won't build on Mac

Question

Won't build on Mac

Closed this issue 9 years ago · 4 comments

Environment: Mac OS 10.10.3 (Yosemite) with X11 (XQuartz) installed, working, and linked in /opt/X11. I'm using g++ (clang).

Steps to reproduce: Clone github, attempt to compile /examples/CImg_demo.cpp using g++.

Expected results: Successful compilation.

Actual results: Build fails, shows the following error:

Undefined symbols for architecture x86_64:
  "_XAllocClassHint", referenced from:
      cimg_library::CImgDisplay::_assign(unsigned int, unsigned int, char const*, unsigned int, bool, bool) in readJpeg-49dd1e.o
  "_XCheckMaskEvent", referenced from:
      cimg_library::CImgDisplay::_events_thread(void*) in readJpeg-49dd1e.o
  "_XCheckTypedEvent", referenced from:
      cimg_library::CImgDisplay::_events_thread(void*) in readJpeg-49dd1e.o
  "_XCheckWindowEvent", referenced from:
      cimg_library::CImgDisplay::_handle_events(_XEvent const*) in readJpeg-49dd1e.o
  "_XCloseDisplay", referenced from:
      cimg_library::CImgDisplay::screen_width() in readJpeg-49dd1e.o
      cimg_library::CImgDisplay::screen_height() in readJpeg-49dd1e.o
  "_XCreateColormap", referenced from:
      cimg_library::CImgDisplay::_assign(unsigned int, unsigned int, char const*, unsigned int, bool, bool) in readJpeg-49dd1e.o
  "_XCreateImage", referenced from:
      void cimg_library::CImgDisplay::_resize<unsigned char>(unsigned char, unsigned int, unsigned int, bool) in readJpeg-49dd1e.o
      void cimg_library::CImgDisplay::_resize<unsigned short>(unsigned short, unsigned int, unsigned int, bool) in readJpeg-49dd1e.o
      void cimg_library::CImgDisplay::_resize<unsigned int>(unsigned int, unsigned int, unsigned int, bool) in readJpeg-49dd1e.o
      cimg_library::CImgDisplay::_assign(unsigned int, unsigned int, char const*, unsigned int, bool, bool) in readJpeg-49dd1e.o
      cimg_library::CImgDisplay::_init_fullscreen() in readJpeg-49dd1e.o
  "_XCreateSimpleWindow", referenced from:
      cimg_library::CImgDisplay::_assign(unsigned int, unsigned int, char const*, unsigned int, bool, bool) in readJpeg-49dd1e.o
  "_XCreateWindow", referenced from:
      cimg_library::CImgDisplay::_assign(unsigned int, unsigned int, char const*, unsigned int, bool, bool) in readJpeg-49dd1e.o
      cimg_library::CImgDisplay::_init_fullscreen() in readJpeg-49dd1e.o
  "_XDestroyWindow", referenced from:
      cimg_library::CImgDisplay::assign() in readJpeg-49dd1e.o
      cimg_library::CImgDisplay::_desinit_fullscreen() in readJpeg-49dd1e.o
  "_XFree", referenced from:
      cimg_library::CImgDisplay::_assign(unsigned int, unsigned int, char const*, unsigned int, bool, bool) in readJpeg-49dd1e.o
  "_XFreeColormap", referenced from:
      cimg_library::CImgDisplay::assign() in readJpeg-49dd1e.o
  "_XGetVisualInfo", referenced from:
      cimg_library::CImgDisplay::_assign(unsigned int, unsigned int, char const*, unsigned int, bool, bool) in readJpeg-49dd1e.o
  "_XGetWindowAttributes", referenced from:
      cimg_library::CImgDisplay::resize(int, int, bool) in readJpeg-49dd1e.o
      cimg_library::CImgDisplay::_init_fullscreen() in readJpeg-49dd1e.o
      cimg_library::CImgDisplay::_map_window() in readJpeg-49dd1e.o
      cimg_library::CImgDisplay::_handle_events(_XEvent const*) in readJpeg-49dd1e.o
  "_XGrabKeyboard", referenced from:
      cimg_library::CImgDisplay::_assign(unsigned int, unsigned int, char const*, unsigned int, bool, bool) in readJpeg-49dd1e.o
  "_XInternAtom", referenced from:
      cimg_library::CImgDisplay::_assign(unsigned int, unsigned int, char const*, unsigned int, bool, bool) in readJpeg-49dd1e.o
  "_XLookupString", referenced from:
      cimg_library::CImgDisplay::_handle_events(_XEvent const*) in readJpeg-49dd1e.o
  "_XMapRaised", referenced from:
      cimg_library::CImgDisplay::_init_fullscreen() in readJpeg-49dd1e.o
      cimg_library::CImgDisplay::_map_window() in readJpeg-49dd1e.o
  "_XMoveWindow", referenced from:
      cimg_library::CImgDisplay::move(int, int) in readJpeg-49dd1e.o
  "_XOpenDisplay", referenced from:
      cimg_library::CImgDisplay::screen_width() in readJpeg-49dd1e.o
      cimg_library::CImgDisplay::screen_height() in readJpeg-49dd1e.o
      cimg_library::CImgDisplay::_assign(unsigned int, unsigned int, char const*, unsigned int, bool, bool) in readJpeg-49dd1e.o
  "_XPutImage", referenced from:
      cimg_library::CImgDisplay::_paint(bool) in readJpeg-49dd1e.o
      cimg_library::CImgDisplay::_init_fullscreen() in readJpeg-49dd1e.o
  "_XQueryKeymap", referenced from:
      cimg_library::CImgDisplay::_handle_events(_XEvent const*) in readJpeg-49dd1e.o
  "_XResizeWindow", referenced from:
      cimg_library::CImgDisplay::resize(int, int, bool) in readJpeg-49dd1e.o
      cimg_library::CImgDisplay::_handle_events(_XEvent const*) in readJpeg-49dd1e.o
  "_XSelectInput", referenced from:
      cimg_library::CImgDisplay::_assign(unsigned int, unsigned int, char const*, unsigned int, bool, bool) in readJpeg-49dd1e.o
      cimg_library::CImgDisplay::_init_fullscreen() in readJpeg-49dd1e.o
  "_XSendEvent", referenced from:
      cimg_library::CImgDisplay::_paint(bool) in readJpeg-49dd1e.o
  "_XSetClassHint", referenced from:
      cimg_library::CImgDisplay::_assign(unsigned int, unsigned int, char const*, unsigned int, bool, bool) in readJpeg-49dd1e.o
  "_XSetInputFocus", referenced from:
      cimg_library::CImgDisplay::_handle_events(_XEvent const*) in readJpeg-49dd1e.o
  "_XSetWMProtocols", referenced from:
      cimg_library::CImgDisplay::_assign(unsigned int, unsigned int, char const*, unsigned int, bool, bool) in readJpeg-49dd1e.o
  "_XSetWindowColormap", referenced from:
      cimg_library::CImgDisplay::_assign(unsigned int, unsigned int, char const*, unsigned int, bool, bool) in readJpeg-49dd1e.o
  "_XStoreColors", referenced from:
      cimg_library::CImgDisplay::_set_colormap(unsigned long&, unsigned int) in readJpeg-49dd1e.o
  "_XStoreName", referenced from:
      cimg_library::CImgDisplay::_assign(unsigned int, unsigned int, char const*, unsigned int, bool, bool) in readJpeg-49dd1e.o
  "_XSync", referenced from:
      cimg_library::CImgDisplay::assign() in readJpeg-49dd1e.o
      cimg_library::CImgDisplay::_init_fullscreen() in readJpeg-49dd1e.o
      cimg_library::CImgDisplay::_map_window() in readJpeg-49dd1e.o
      cimg_library::CImgDisplay::_handle_events(_XEvent const*) in readJpeg-49dd1e.o
  "_XUngrabKeyboard", referenced from:
      cimg_library::CImgDisplay::_desinit_fullscreen() in readJpeg-49dd1e.o
  "_XUnmapWindow", referenced from:
      cimg_library::CImgDisplay::_handle_events(_XEvent const*) in readJpeg-49dd1e.o
  "_XVisualIDFromVisual", referenced from:
      cimg_library::CImgDisplay::_assign(unsigned int, unsigned int, char const*, unsigned int, bool, bool) in readJpeg-49dd1e.o
  "_XWindowEvent", referenced from:
      cimg_library::CImgDisplay::_init_fullscreen() in readJpeg-49dd1e.o
      cimg_library::CImgDisplay::_map_window() in readJpeg-49dd1e.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

It compiles successfully if I set "cimg_display" to 0 for my OS, (Line 205) however I don't believe this is a fix.

Answer 1 · 2015-07-08T07:16:55.000Z

What are the g++ options you provided ? Did you add the flags '-lX11 -lpthread' when compiling ? They are mandatory if you want to use the display capabilities of CImg.

Answer 2 · 2015-07-08T07:29:11.000Z

Wasn't providing any arguments. Added -lX11 -lpthread and got a library not found error (ld: library not found for -lX11), but fixed it by adding -L/usr/X11/lib -I/usr/X11/include.

Everything seems to be working well now. Thank you.

Answer 3 · 2016-10-27T11:48:45.000Z

How can I compile on Mac, without X11?

I am not in need of the display capabilities of X11 for my project.

Answer 4 · 2016-10-27T12:27:03.000Z

Just define 'cimg_display=0' when compiling, either by inserting

#define cimg_display 0
#include "CImg.h"

before the inclusion of CImg.h, or by specifying the flag -Dcimg_display=0 when compiling (with g++).