Fix issues while running ./build_gaps.sh

[YunYunY]

Platform: Ubuntu 18.04.3 LTS

./build_gaps.sh
fatal error: GL/osmesa.h: No such file or directory

Fix for this error

apt-get install libosmesa6-dev

Second error while running

./build_gaps.sh
In file included from scn2cam.cpp:13:0:
/usr/include/GL/osmesa.h:124:1: error: ‘GLAPI’ does not name a type; did you mean ‘GLEWAPI’?
 GLAPI OSMesaContext GLAPIENTRY

Fix for this error
Near the end of glew.h is the line:
#undef GLAPI
Delete it

Ready to go!

[janbechtold]

Thanks @YunYunY for documenting this.
Additionally to the GLAPI error I had this error:
/usr/bin/ld: cannot find -lGLEW
more verbose output via:
ld -lGLEW --verbose
fixed by installing libglew:
sudo apt-get install libglew-dev​

[rachel-1]

Error:

/usr/include/GL/osmesa.h:137:1: error: ‘GLAPI’ does not name a type
 GLAPI OSMesaContext GLAPIENTRY

fixed by removing #undef GLAPI in /usr/include/GL/glew.h as suggested by @YunYunY :)

Thanks for the tips! For completeness, I'm also on Ubuntu 18, running whatever strange combination of system packages I downloaded for the DeepSDF repository (which is presumably why I didn't encounter the other errors).

[bottleyeah]

./build_gaps.sh
fatal error: GL/glew.h: No such file or directory