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| author | Jan Maria Matejka <mq@ucw.cz> | 2018-07-17 15:30:59 +0200 |
|---|---|---|
| committer | Jan Maria Matejka <mq@ucw.cz> | 2018-08-14 14:01:39 +0200 |
| commit | 86b9e8e39a0b42407c95921ca8262b0a75cad5f2 (patch) | |
| tree | 3d874e8d8e225205ad364c7911485b3fdeb67b73 /configure.ac | |
| parent | 1279a83103262950ab99e8a6fe3c6cc2da8d42a8 (diff) | |
M4: generate synchronization lines
This also includes Bison version check. Versions before 3.0 don't
support them in a reliable way and we don't promise to work with
versions older than 2.4.
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 44184273..9a2e55e2 100644 --- a/configure.ac +++ b/configure.ac @@ -157,6 +157,15 @@ test -z "$FLEX" && AC_MSG_ERROR([Flex is missing.]) test -z "$BISON" && AC_MSG_ERROR([Bison is missing.]) test -z "$M4" && AC_MSG_ERROR([M4 is missing.]) +AC_MSG_CHECKING([bison version]) +BIRD_CHECK_BISON_VERSION(BISON_VERSION) +AC_MSG_RESULT([$BISON_VERSION]) +if test "$bird_bison_synclines" = yes; then + M4FLAGS="$M4FLAGS -s" +fi + +AC_SUBST([M4FLAGS]) + BIRD_CHECK_PROG_FLAVOR_GNU([$M4], [], [AC_MSG_ERROR([Provided M4 is not GNU M4.])] |