err at demo\glfw_opengl2\file_browser.c

Msys2 + glwf3.3

#if 1//def INCLUDE_FILE_BROWSER
#include "../../demo/common/file_browser.c"
#endif

err:
../../demo/common/file_browser.c:115:55: error: 'GL_CLAMP_TO_EDGE' undeclared (first use in this function)
115 | glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);

../../demo/common/file_browser.c: In function 'dir_list':
../../demo/common/file_browser.c:168:11: error: unknown type name 'DIR'
168 | const DIR *none = NULL;
| ^~~
../../demo/common/file_browser.c:171:5: error: unknown type name 'DIR'
171 | DIR *z;
| ^~~

Start with demo\common\file_browser.c at lines 115 and 168-171, then inspect the demo\glfw_opengl2 build and its included platform headers. Reproduce the MSYS2 GLFW 3.3 compilation errors and determine the project-compatible fix for the missing OpenGL constant and DIR type; done means this demo compiles successfully in that environment.

Written by the indexing model from the issue text.