Cannot cross-compile from Linux to Windows #155
Description
I'm trying to compile my application from Linux to Windows. I use go-gl jointly with go-sdl2 and to compile the program I follow these instructions. Additionally, I set CGO_CFLAGS to -DTAG_WINDOWS -D_WIN32 and CGO_LDFLAGS to -lopengl32 and I run go build with WGL tag:
env CGO_ENABLED="1" CC="/usr/bin/x86_64-w64-mingw32-gcc" GOOS="windows" \
CGO_LDFLAGS="-lmingw32 -lSDL2 -lSDL2_image -lSDL2_ttf -lopengl32" \
CGO_CFLAGS="-D_REENTRANT -DTAG_WINDOWS -D_WIN32" \
go build -tags WGL -x test.go
Unfortunately, when I run the program on my Windows machine gl.Init fails to load glGetnTexImage. Following README, I call gl.Init after activating OpenGL context:
sdl.SetHint(sdl.HINT_RENDER_DRIVER, "opengl")
if glContext, err = window.GLCreateContext(); err != nil {
//...
}
window.GLMakeCurrent(glContext)
if err = gl.Init(); err != nil {
//...
}
On Windows I have opengl 4.6.