Linux and GLFW fixes

[elmindreda]

This has four parts:

• Fix basic compilation on Linux
• Disable the GLFW tests, examples and documentation targets that clutter up the build
• Update GLFW sources to the latest stable release (3.2.1) and depend on its CMake library target
• Move to GLFW timer as time source (from GetTickCount64 on Windows and zero (0) on Linux)

The changes have been tested on Linux (GCC) and Windows (VS2015).

[superphunthyme]

Thanks for the fix!

[aloiscochard]

Would be good to merge this at some point... I just repeated all those fixes in my local clone :-(

[nikolas]

This branch fixes the build process for me on Debian testing/buster, gcc 8.2.0. @johnkslang @grahamsellers, can you take a look and merge this?

[johnkslang]

It seems most of the changes are to port from C++ to C?

[sethk]

It seems most of the changes are to port from C++ to C?

Well, since that source file is 99% C, and it uses goto for error cleanup instead of RAII, it would make sense to compile it as C.

[mapulse]

I have some problem with 12 particle sim. how to compile it? It is buggy. look at 113 . It is a macro but not closed the paren. and inclusive function not closed.
and compile error :
~/.../examples/src/12-particlesimulator/12-particlesimulator.cpp:114:13: error: ‘std140’ was not declared in this scope
layout (std140, binding = 0) uniform attractor_block
^~~~~~

[xfry]

Hi @elmindreda I'm having alike issue but I receive this messaje when I execute the next step by steps:

Clone the repository
Then I move to the build directory: cd build
As you suggest I run cmake with test disabled: cmake -DGLFW_BUILD_TESTS=OFF .
it works without erros.
Then I run make and here is when troubles come, the make process compiles glfw very well

[ 10%] Building C object lib/glfw/src/CMakeFiles/glfw.dir/posix_time.c.o
[ 11%] Building C object lib/glfw/src/CMakeFiles/glfw.dir/posix_tls.c.o
[ 12%] Building C object lib/glfw/src/CMakeFiles/glfw.dir/glx_context.c.o
[ 13%] Linking C static library ../../libglfw3.a
[ 13%] Built target glfw

But it fails when start to run vermilion, and this is the error message:

[ 17%] Building CXX object CMakeFiles/vermilion.dir/lib/vdds.cpp.o
lib/vdds.cpp: In function ‘void vglLoadDDS(const char*, vglImageData*)’:
lib/vdds.cpp:645:1: error: jump to label ‘done_close_file’ [-fpermissive]
 done_close_file:

Can you help me with some guidance on how to solve vermilion make error?

[elmindreda]

@xfry Try adding the -fpermissive flag.

cmake -DCMAKE_C_FLAGS=-fpermissive -DGLFW_BUILD_TESTS=OFF .

[ghost]

I had compilation errors about done_close_file using the books official code on Ubuntu 22.04 lts. This fork fixed it for me. Thank you for your work elminreda <3