glibc/scripts, branch glibc-2.38

scripts: Fix fortify checks if compiler does not support _FORTIFY_SOURCE=3

2023-07-20T20:58:26Z

The 30379efad1 added _FORTIFY_SOURCE checks without check if compiler does support all used fortify levels. This patch fixes it by first checking at configure time the maximum support fortify level and using it instead of a pre-defined one. Checked on x86_64 with gcc 11, 12, and 13. Reviewed-by: Siddhesh Poyarekar Tested-by: Florian Weimer

configure: Disable building libcrypt by default

2023-07-20T18:38:13Z

We mentioned eventual dropping of libcrypt in the 2.28 NEWS. Actually put that plan in motion by first disabling building libcrypt by default. note in NEWS that the library will be dropped completely in a future release. Also add a couple of builds into build-many-glibcs.py. Signed-off-by: Siddhesh Poyarekar Reviewed-by: Andreas K. Hüttel

scripts: Add fortify checks on installed headers

2023-07-19T19:06:24Z

The _FORTIFY_SOURCE is used as default by some system compilers, and there is no way to check if some fortify extension does not trigger any conformance issue. Checked on x86_64-linux-gnu. Reviewed-by: Carlos O'Donell

Allow glibc to be built with _FORTIFY_SOURCE

2023-07-05T14:59:34Z

Add --enable-fortify-source option. It is now possible to enable fortification through a configure option. The level may be given as parameter, if none is provided, the configure script will determine what is the highest level possible that can be set considering GCC built-ins availability and set it. If level is explicitly set to 3, configure checks if the compiler supports the built-in function necessary for it or raise an error if it isn't. If the configure option isn't explicitly enabled, it _FORTIFY_SOURCE is forcibly undefined (and therefore disabled). The result of the configure checks are new variables, ${fortify_source} and ${no_fortify_source} that can be used to appropriately populate CFLAGS. A dedicated patch will follow to make use of this variable in Makefiles when necessary. Updated NEWS and INSTALL. Adding dedicated x86_64 variant that enables the configuration. Reviewed-by: Siddhesh Poyarekar

Use Linux 6.4 in build-many-glibcs.py

2023-06-27T13:49:38Z

This patch makes build-many-glibcs.py use Linux 6.4. Tested with build-many-glibcs.py (host-libraries, compilers and glibcs builds).

Add lint-makefiles Makefile linting test.

2023-06-03T01:43:05Z

We add a 'make check' test that lints all Makefiles in the source directory of the glibc build. This linting test ensures that the lines in all Makefiles will be sorted correctly as developers creates patches. It is added to 'make check' because it is light-weight and supports the existing developer workflow The test adds ~3s to a 'make check' execution. No regressions on x86_64 and i686. Reviewed-by: Florian Weimer

Fix a few more typos I missed in previous round -- BZ 25337

2023-06-02T23:46:32Z

Fix all the remaining misspellings -- BZ 25337

2023-06-02T01:39:48Z

scripts: sort-makefile-lines.py

2023-05-18T16:33:24Z

We must return < 0, 0, or > 0 as the result of the comparison function for cmp_to_key() to work correctly across all comparisons. Reviewed-by: Siddhesh Poyarekar

scripts: Add sort-makefile-lines.py to sort Makefile variables.

2023-05-10T17:14:52Z

The scripts/sort-makefile-lines.py script sorts Makefile variables according to project expected order. The script can be used like this: $ scripts/sort-makefile-lines.py < elf/Makefile > elf/Makefile.tmp $ mv elf/Makefile.tmp elf/Makefile Reviewed-by: Siddhesh Poyarekar