introduce new GCC 12 warning disables and use them in a few places

this introduces 4 new warning disable flags:

CC_WNO_MISSING_TEMPLATE_KEYWORD
CC_WNO_REGISTER
CC_WNO_STRINGOP_OVERREAD
CC_WNO_ARRAY_BOUNDS

and documents them in README.warnings. of these, the string op
and array bounds are both problematic (real bugs) and also spurious
(not real bugs), and the other 2 are mostly temporary for older
3rd party code.

add some new uses of CC_WNO_STRINGOP_OVERFLOW.

fix m68k build for gallium and GCC 12.

don't install glu_mangle.h

xorg/lib stuff to enable mesa.old, prepare for new mesa

- rename OLD_PREFIX to OLD_SUFFIX, since it is
- include mesa-which.mk and use ${OLD_SUFFIX} in several places
- remove mesa < 18 support

Remove workaround for internal compiler error.

GCC 7 and 6 work fine without this for both m68k and m68010.

move mesa10 build into .old scheme:

- add ${X11SRCDIR.MesaLib.old} and introduce ${X11SRCDIR.Mesa} as an
alias for either the former or the non old. this allows many of
the makefiles to simply use ${X11SRCDIR.Mesa} (but does not really
enable much sharing of makefiles, but reduces their diffs.)

- use mesa-which.mk to define ${OLD_PREFIX} to either "" or ".old",
and to know if to build 'dri7' (.old only.) ${OLD_PREFIX} is used
by other code (eg, LIBDPLIBS) to pick the right subdir.

Fix libGLU build with Clang/LLVM

The register keyword is deprecated in newer C++ standards.
Add a compiler flag to disable a warning that is turned into a fatal error.

branches: 1.17.14; 1.17.16;
remove lint hack.

switch over to the separate glu sources.

branches: 1.15.2;
clang doesn't like -Wno-tautological-undefined-compare, use
-Wno-tautological-compare instead.

Disable more warnings for clang build to deal with xsrc changes.

remove remaining makefile support for GCC < 45 that i found.

branches: 1.12.2;
Handle dependency on libstdc++ / libc++ in bsd.lib.mk.

workaround for internal compiler error

branches: 1.10.2; 1.10.8;
Various warning adjustments for clang

XXX: apply -Wno-error/friends to a few files

install dri.pc.
put the Mesa version into it's own makefile, and share it. there
are now 4 references to it.

updates for Mesa 7.8.2:
- build glsl as a host tool
- add the glsl objects to libmesa
- add/remove new/deleted sources for various components
- adjust the libmesa/libGL builds to pull in the new glsl objects
- re-apply the BUILDSYMLINK hack for eval.c/pixel.c/pixelstore.c
- use glsl to build the slang headers on the fly

we're now at mesa 7.7.1.

XXX: really really really need to make this in one place...

we have Mesa 7.4.4.

fix up the Mesa version for the gl*.pc files.

add LIBISCXX. if it is != "no", use ${CXX} instead of ${CC} to link
shared libraries. use it for the one c++ library we have.

fixes PR#39936.

branches: 1.2.2; 1.2.6; 1.2.8;
Install pkgconfig files. Where applicable, remove .if 0 code that tried to
do the same thing.

branches: 1.1.1;
Initial revision

don't install glu_mangle.h

xorg/lib stuff to enable mesa.old, prepare for new mesa

- rename OLD_PREFIX to OLD_SUFFIX, since it is
- include mesa-which.mk and use ${OLD_SUFFIX} in several places
- remove mesa < 18 support

Remove workaround for internal compiler error.

GCC 7 and 6 work fine without this for both m68k and m68010.

move mesa10 build into .old scheme:

- add ${X11SRCDIR.MesaLib.old} and introduce ${X11SRCDIR.Mesa} as an
alias for either the former or the non old. this allows many of
the makefiles to simply use ${X11SRCDIR.Mesa} (but does not really
enable much sharing of makefiles, but reduces their diffs.)

- use mesa-which.mk to define ${OLD_PREFIX} to either "" or ".old",
and to know if to build 'dri7' (.old only.) ${OLD_PREFIX} is used
by other code (eg, LIBDPLIBS) to pick the right subdir.

Fix libGLU build with Clang/LLVM

The register keyword is deprecated in newer C++ standards.
Add a compiler flag to disable a warning that is turned into a fatal error.

branches: 1.17.14; 1.17.16;
remove lint hack.

switch over to the separate glu sources.

branches: 1.15.2;
clang doesn't like -Wno-tautological-undefined-compare, use
-Wno-tautological-compare instead.

Disable more warnings for clang build to deal with xsrc changes.

remove remaining makefile support for GCC < 45 that i found.

branches: 1.12.2;
Handle dependency on libstdc++ / libc++ in bsd.lib.mk.

workaround for internal compiler error

branches: 1.10.2; 1.10.8;
Various warning adjustments for clang

XXX: apply -Wno-error/friends to a few files

install dri.pc.
put the Mesa version into it's own makefile, and share it. there
are now 4 references to it.

updates for Mesa 7.8.2:
- build glsl as a host tool
- add the glsl objects to libmesa
- add/remove new/deleted sources for various components
- adjust the libmesa/libGL builds to pull in the new glsl objects
- re-apply the BUILDSYMLINK hack for eval.c/pixel.c/pixelstore.c
- use glsl to build the slang headers on the fly

we're now at mesa 7.7.1.

XXX: really really really need to make this in one place...

we have Mesa 7.4.4.

fix up the Mesa version for the gl*.pc files.

add LIBISCXX. if it is != "no", use ${CXX} instead of ${CC} to link
shared libraries. use it for the one c++ library we have.

fixes PR#39936.

branches: 1.2.2; 1.2.6; 1.2.8;
Install pkgconfig files. Where applicable, remove .if 0 code that tried to
do the same thing.

branches: 1.1.1;
Initial revision

xorg/lib stuff to enable mesa.old, prepare for new mesa

- rename OLD_PREFIX to OLD_SUFFIX, since it is
- include mesa-which.mk and use ${OLD_SUFFIX} in several places
- remove mesa < 18 support

Remove workaround for internal compiler error.

GCC 7 and 6 work fine without this for both m68k and m68010.

move mesa10 build into .old scheme:

- add ${X11SRCDIR.MesaLib.old} and introduce ${X11SRCDIR.Mesa} as an
alias for either the former or the non old. this allows many of
the makefiles to simply use ${X11SRCDIR.Mesa} (but does not really
enable much sharing of makefiles, but reduces their diffs.)

- use mesa-which.mk to define ${OLD_PREFIX} to either "" or ".old",
and to know if to build 'dri7' (.old only.) ${OLD_PREFIX} is used
by other code (eg, LIBDPLIBS) to pick the right subdir.

Fix libGLU build with Clang/LLVM

The register keyword is deprecated in newer C++ standards.
Add a compiler flag to disable a warning that is turned into a fatal error.

branches: 1.17.14; 1.17.16;
remove lint hack.

switch over to the separate glu sources.

branches: 1.15.2;
clang doesn't like -Wno-tautological-undefined-compare, use
-Wno-tautological-compare instead.

Disable more warnings for clang build to deal with xsrc changes.

remove remaining makefile support for GCC < 45 that i found.

branches: 1.12.2;
Handle dependency on libstdc++ / libc++ in bsd.lib.mk.

workaround for internal compiler error

branches: 1.10.2; 1.10.8;
Various warning adjustments for clang

XXX: apply -Wno-error/friends to a few files

install dri.pc.
put the Mesa version into it's own makefile, and share it. there
are now 4 references to it.

updates for Mesa 7.8.2:
- build glsl as a host tool
- add the glsl objects to libmesa
- add/remove new/deleted sources for various components
- adjust the libmesa/libGL builds to pull in the new glsl objects
- re-apply the BUILDSYMLINK hack for eval.c/pixel.c/pixelstore.c
- use glsl to build the slang headers on the fly

we're now at mesa 7.7.1.

XXX: really really really need to make this in one place...

we have Mesa 7.4.4.

fix up the Mesa version for the gl*.pc files.

add LIBISCXX. if it is != "no", use ${CXX} instead of ${CC} to link
shared libraries. use it for the one c++ library we have.

fixes PR#39936.

branches: 1.2.2; 1.2.6; 1.2.8;
Install pkgconfig files. Where applicable, remove .if 0 code that tried to
do the same thing.

branches: 1.1.1;
Initial revision

Remove workaround for internal compiler error.

GCC 7 and 6 work fine without this for both m68k and m68010.

move mesa10 build into .old scheme:

- add ${X11SRCDIR.MesaLib.old} and introduce ${X11SRCDIR.Mesa} as an
alias for either the former or the non old. this allows many of
the makefiles to simply use ${X11SRCDIR.Mesa} (but does not really
enable much sharing of makefiles, but reduces their diffs.)

- use mesa-which.mk to define ${OLD_PREFIX} to either "" or ".old",
and to know if to build 'dri7' (.old only.) ${OLD_PREFIX} is used
by other code (eg, LIBDPLIBS) to pick the right subdir.

Fix libGLU build with Clang/LLVM

The register keyword is deprecated in newer C++ standards.
Add a compiler flag to disable a warning that is turned into a fatal error.

branches: 1.17.14;
remove lint hack.

switch over to the separate glu sources.

branches: 1.15.2;
clang doesn't like -Wno-tautological-undefined-compare, use
-Wno-tautological-compare instead.

Disable more warnings for clang build to deal with xsrc changes.

remove remaining makefile support for GCC < 45 that i found.

branches: 1.12.2;
Handle dependency on libstdc++ / libc++ in bsd.lib.mk.

workaround for internal compiler error

branches: 1.10.2; 1.10.8;
Various warning adjustments for clang

XXX: apply -Wno-error/friends to a few files

install dri.pc.
put the Mesa version into it's own makefile, and share it. there
are now 4 references to it.

updates for Mesa 7.8.2:
- build glsl as a host tool
- add the glsl objects to libmesa
- add/remove new/deleted sources for various components
- adjust the libmesa/libGL builds to pull in the new glsl objects
- re-apply the BUILDSYMLINK hack for eval.c/pixel.c/pixelstore.c
- use glsl to build the slang headers on the fly

we're now at mesa 7.7.1.

XXX: really really really need to make this in one place...

we have Mesa 7.4.4.

fix up the Mesa version for the gl*.pc files.

add LIBISCXX. if it is != "no", use ${CXX} instead of ${CC} to link
shared libraries. use it for the one c++ library we have.

fixes PR#39936.

branches: 1.2.2; 1.2.6; 1.2.8;
Install pkgconfig files. Where applicable, remove .if 0 code that tried to
do the same thing.

branches: 1.1.1;
Initial revision