[Vm-dev] OSX 10.9 PharoVM build failure workarounds

[Ben Coman]

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/io_surface_layer_mac.mm

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