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configure.ac: bison is required for kconf 

Make the requirement for bison harder (but not strict). The system bison
will be used to build kconf. If the system bison is not GNU bison 2.7 or
later crosstool-ng will build GNU bison as a companion tool if necessary
(for glibc 2.29 or newer).

Fixes #1621
Signed-off-by: Chris Packham <judge.packham@gmail.com>
(cherry picked from commit a3e3d734a7d138d8bae6014a71cdda07a70901a5)
This commit is contained in:
Chris Packham 2022-06-08 20:43:29 +12:00 committed by Stephanos Ioannidis
parent dcf088c420
commit bc3c514822
1 changed files with 1 additions and 1 deletions
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configure.ac
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@ -267,7 +267,7 @@ CTNG_PROG_VERSION([PYTHON],
[^Python 3\.([4-9]|[1-9][0-9]+)\.],
[python_3_4_or_newer])
CTNG_PROG_VERSION([BISON],
CTNG_PROG_VERSION_REQ_ANY([BISON],
[bison >= 2.7],
[bison],
[bison],