update compiler flags macros
commit24244001b17ffaebf3df5a668e8f6ca8697e99da
authorSven Verdoolaege <sven.verdoolaege@gmail.com>
Mon, 6 Jun 2022 13:22:02 +0000 (6 15:22 +0200)
committerSven Verdoolaege <sven.verdoolaege@gmail.com>
Sat, 11 Jun 2022 14:30:30 +0000 (11 16:30 +0200)
treed6ba62ce7b0dfa0618f95d7be6b432a682ed817d
parent239424adc7f10dc6c196eccd114e40b8b133eef5
update compiler flags macros

In particular, update to the latest version from the autoconf archive,
but preserve the changes from isl-0.01-252-gde037fcda (use -O1 optimization
level for gcc 4.2, Fri Feb 19 09:26:19 2010 +0100).

Signed-off-by: Sven Verdoolaege <sven.verdoolaege@gmail.com>
m4/ax_cc_maxopt.m4
m4/ax_cflags_warn_all.m4
m4/ax_check_compile_flag.m4 [new file with mode: 0644]
m4/ax_check_compiler_flags.m4 [deleted file]
m4/ax_compiler_vendor.m4
m4/ax_gcc_archflag.m4
m4/ax_gcc_x86_cpuid.m4