[SCM] make branch, master, updated. 4.4-29-g15dfad96

[Paul D. Smith]

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- Log -----------------------------------------------------------------
commit 15dfad96d77c9445d11be939a5042675e4ca8c65
Author: Paul Smith <psmith@gnu.org>
Date:   Sat Dec 24 10:30:13 2022 -0500

    [SV 63439, SV 63452] Don't warn on undefined internal variables
    
    Don't generate undefined variable warnings for variables that are
    internal / special to make and where the empty string is valid.
    Rather than defining them to empty, which could introduce unwanted
    behavior, keep a list of variable names which we should never warn
    about.
    
    * src/variable.h (warn_undefined): Convert the macro to a function.
    * src/variable.c (defined_vars): Always "defined" variable names.
    (warn_undefined): Implement as a function and check against the
    defined_vars before generating a warning.
    * src/read.c (read_all_makefiles): No need to reset warning flag.
    * src/vpath.c (build_vpath_lists): Ditto.
    * tests/scripts/options/warn-undefined-variables: Expand all the
    pre-defined variables to ensure warnings are not generated.

commit 76d2e5d98dbbf655f74f6ef2f6dd3cdd45052ea0
Author: Paul Smith <psmith@gnu.org>
Date:   Sat Dec 24 09:26:24 2022 -0500

    [SV 63552] Change directories before constructing include paths
    
    * src/makeint.h (reset_makeflags): New function to handle changing
    MAKEFLAGS from within makefiles.  Remove decode_env_switches().
    * src/variable.c (set_special_var): Call reset_makeflags() instead
    of various internal methods.
    * src/main.c (decode_env_switches): Only internal now so make static.
    (decode_switches): Don't invoke construct_include_path() yet.
    (reset_makeflags): Decode env switches and construct include paths.
    (main): Construct include paths after we process -C options.
    * tests/scripts/options/dash-C: Rewrite to use new test constructs.
    Add a test using both -C and -I together.
    Add a test for multiple -C options.

-----------------------------------------------------------------------

Summary of changes:
 src/main.c                                     | 20 +++++--
 src/makeint.h                                  |  4 +-
 src/read.c                                     | 10 +---
 src/variable.c                                 | 34 ++++++++++--
 src/variable.h                                 | 10 +---
 src/vpath.c                                    | 30 ++--------
 tests/scripts/options/dash-C                   | 76 +++++++++++---------------
 tests/scripts/options/warn-undefined-variables | 13 +++++
 8 files changed, 98 insertions(+), 99 deletions(-)


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