I followed the instructions at https://github.com/pharo-project/pharo-vm to build the Pharo VM. In generator.image I evaluated... PharoVMBuilder buildMacOSX32. then cd ../build bash build.sh After cmake finished its checks, it tried to compile freetype (2.4.9) but gets errors... *Generating /Users/ben/Repos/pharo-vm/results/Pharo.app/Contents/MacOS/Plugins/libfreetype.6.dylib* clang: warning: no such sysroot directory: '/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.6.sdk' **fatal error: **'math.h' file not found* And indeed, I don't have ../MacOSX.platform/Developer/SDKs/MacOSX10.6.sdk I have ../MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk So updating CMakeLists.txt as follows... + set(CMAKE_OSX_DEPLOYMENT_TARGET 10.9) + set(CMAKE_OSX_SYSROOT /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk) - set(CMAKE_OSX_DEPLOYMENT_TARGET 10.5) - set(CMAKE_OSX_SYSROOT /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.6.sdk) allowed the build to progress further. ========= Then the build failed getting "too many errors" that looked somewhat like this... /Users/ben/Repos/pharo-vm/platforms/iOS/vm/OSX/sqSqueakOSXOpenGLView.m:208:18: error: use of undeclared identifier 'GL_TEXTURE_RECTANGLE_ARB' glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER, GL_NEAREST); Tracked down a likely suspect here... https://codereview.chromium.org/587193005/diff/1/content/browser/compositor/... And indeed editing... platforms/iOS/vm/OSX/sqSqueakOSXOpenGLView.m to add... #import <OpenGL/gl.h> gave me a working VM. ========= Should I log these somewhere ? cheers -ben