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configure.ac: fail if flex is not found
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Thanks to Ian Norton for the bug report
Closes #124
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LudovicRousseau committed Mar 25, 2022
1 parent dfd05d5 commit 3f89340
Showing 1 changed file with 4 additions and 0 deletions.
4 changes: 4 additions & 0 deletions configure.ac
Original file line number Diff line number Diff line change
Expand Up @@ -61,6 +61,10 @@ AC_PROG_INSTALL
AC_PROG_LN_S
AC_PROG_MAKE_SET
AC_PROG_LEX([noyywrap])
if test $LEX = ":"
then
AC_MSG_ERROR([no lex or flex found])
fi
PKG_PROG_PKG_CONFIG
AM_PROG_CC_C_O
AM_PROG_AR
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