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configure.ac: Check that patch supports --no-backup-if-mismatch

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BSD patch does not support --no-backup-if-mismatch. When we detect patch
check that it supports the option we use.

Fixes: #1577

Signed-off-by: Chris Packham <judge.packham@gmail.com>
This commit is contained in:
Chris Packham 2021-12-29 15:20:57 +13:00
parent 584e57e888
commit ade8c04d14
1 changed files with 6 additions and 0 deletions
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6
configure.ac
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@ -169,6 +169,12 @@ CTNG_CPU_COUNT
CTNG_PATH_TOOL_REQ([PATCH], [gpatch patch], [patch])
# Ensure the detected patch supports --no-backup-if-mismatch (BSD patch does not)
AC_MSG_CHECKING([whether patch supports --no-backup-if-mismatch])
AS_IF([$PATCH --no-backup-if-mismatch </dev/null >/dev/null 2>&1],
AC_MSG_RESULT([yes]),
AC_MSG_ERROR([$PATCH does not support --no-backup-if-mismatch]))
# We need a bash that is >= 3.1
CTNG_PROG_VERSION_REQ_STRICT([BASH_SHELL],
[GNU bash >= 3.1],