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bulid: merge branch 'th/autotools-fix-detect-compiler-warning'

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https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/merge_requests/1334
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Thomas Haller 2022-08-11 19:51:11 +02:00
commit 082e6c96a1
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2 changed files with 10 additions and 1 deletions
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2
configure.ac
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@ -1114,7 +1114,7 @@ fi
NM_COMPILER_WARNINGS(AM_CFLAGS, ${more_warnings_default})
NM_COMPILER_FLAG(LIBSYSTEMD_NM_CFLAGS, "-Wno-gnu-variable-sized-type-not-at-end")
NM_COMPILER_WARNING_FLAG(LIBSYSTEMD_NM_CFLAGS, "-Wno-gnu-variable-sized-type-not-at-end")
AC_SUBST(LIBSYSTEMD_NM_CFLAGS)
CC_CHECK_FLAGS_APPEND([with_cflags], [CFLAGS], [\

9
m4/compiler_options.m4
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@ -29,8 +29,17 @@ AC_DEFUN([NM_COMPILER_FLAG], [
], [$4])
])
dnl Check whether a particular warning is supported. If yes, the flag
dnl is appended to [ENV-VAR].
dnl NM_COMPILER_WARNING_FLAG([ENV-VAR], [WARNING])
AC_DEFUN([NM_COMPILER_WARNING_FLAG], [
dnl "-Wno-*" requires special handling, see https://gcc.gnu.org/wiki/FAQ#wnowarning.
_NM_COMPILER_FLAG([-Wall $(printf '%s' "$2" | sed -e 's/^-W\(no-\|no-error=\)/-W/')], [], [eval "AS_TR_SH([$1])='$$1 $2'"], [])
])
dnl Check whether a particular warning is not emitted with code provided,
dnl append an option to disable the warning to a specified variable if the check fails.
dnl Note that this always either adds -W$2 or -Wno-$2, depending on whether it's supported.
dnl NM_COMPILER_WARNING([ENV-VAR], [WARNING], [C-SNIPPET])
AC_DEFUN([NM_COMPILER_WARNING], [
_NM_COMPILER_FLAG([-W$2], [$3], [eval "AS_TR_SH([$1])='$$1 -W$2'"], [eval "AS_TR_SH([$1])='$$1 -Wno-$2'"])