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Port config.guess to strict POSIX.1-2024 c17

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* config.guess (set_cc_for_build):
Try the c17 compiler, standardized in POSIX.1-2024.  See:
https://pubs.opengroup.org/onlinepubs/9799919799/utilities/c17.html
While we're at it, prefer c99 to c89.

Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
This commit is contained in:
Paul Eggert 2024-07-27 22:41:28 -07:00 committed by Dmitry V. Levin
parent 130dcf7787
commit 00b1592749
2 changed files with 3 additions and 3 deletions
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4
config.guess vendored
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@ -4,7 +4,7 @@
# shellcheck disable=SC2006,SC2268 # see below for rationale # shellcheck disable=SC2006,SC2268 # see below for rationale
timestamp='2024-04-03' timestamp='2024-07-27'
# This file is free software; you can redistribute it and/or modify it # This file is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by # under the terms of the GNU General Public License as published by
@ -123,7 +123,7 @@ set_cc_for_build() {
dummy=$tmp/dummy dummy=$tmp/dummy
case ${CC_FOR_BUILD-},${HOST_CC-},${CC-} in case ${CC_FOR_BUILD-},${HOST_CC-},${CC-} in
,,) echo "int x;" > "$dummy.c" ,,) echo "int x;" > "$dummy.c"
for driver in cc gcc c89 c99 ; do for driver in cc gcc c17 c99 c89 ; do
if ($driver -c -o "$dummy.o" "$dummy.c") >/dev/null 2>&1 ; then if ($driver -c -o "$dummy.o" "$dummy.c") >/dev/null 2>&1 ; then
CC_FOR_BUILD=$driver CC_FOR_BUILD=$driver
break break

2
doc/config.guess.1
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@ -1,5 +1,5 @@
.\" DO NOT MODIFY THIS FILE! It was generated by help2man 1.48.5. .\" DO NOT MODIFY THIS FILE! It was generated by help2man 1.48.5.
.TH CONFIG.GUESS "1" "May 2024" "GNU config.guess (2024-04-03)" "User Commands" .TH CONFIG.GUESS "1" "July 2024" "GNU config.guess (2024-07-27)" "User Commands"
.SH NAME .SH NAME
config.guess \- guess the build system triplet config.guess \- guess the build system triplet
.SH SYNOPSIS .SH SYNOPSIS