ever implemented for OpenGL2 driver, lots of code debt, best to
instead just keep improving the overlay system instead which is
already available for most video drivers
This allows enabling and disabling features for platforms
more robustly.
Fixes https://github.com/libretro/RetroArch/issues/8777
v2: Fix D3D configure checks.
v3: Cleanup.
v4: Update Makefile.msvc and Makefile.win
This adds '--disable-menu' which will disable all of the menu drivers
including Qt. This will also allow disabling only rgui and not the other
menu drivers.
This fixes a few subtle problems with passing CFLAGS and CXXFLAGS as
environment variables for configure.
First it will now only add these variables to config.mk when they are
actually set. If they are unset then the default optimizations in the
Makefile are set. This avoids passing more than one conflicting
optimization level to the compiler.
Next all CFLAGS are added to CXXFLAGS to avoid issues with forgetting to
set both CFLAGS and CXXFLAGS. This results in the cxx compiler getting
passed several redundant optimization levels when both the CFLAGS and
CXXFLAGS environment variabls are used. Now these uses of CFLAGS in
Makefile.common are set to DEF_FLAGS. This allows adding $(DEF_FLAGS)
to the CXXFLAGS variable without adding redundant flags from CFLAGS.
v2: Update other build files.