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authorThomas E. Dickey <dickey@his.com>2020-02-14 01:26:06 +0000
committerThomas E. Dickey <dickey@his.com>2020-02-14 01:26:06 +0000
commitd5d8285dd676a9940ee351daada4179a01f151fd (patch)
tree66db4cc81d60379d9d921971bd2e03b210e98bc0 /configure.ac
parent1064bad5f2e2a590c1bb7772d94097997ee65ad1 (diff)
issue #4: configure doesn't fail if flex is not installed
add a check for lex like the existing one for yacc Signed-off-by: Thomas E. Dickey <dickey@invisible-island.net>
Diffstat (limited to 'configure.ac')
-rw-r--r--configure.ac6
1 files changed, 6 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac
index 985df1a..143d388 100644
--- a/configure.ac
+++ b/configure.ac
@@ -27,6 +27,12 @@ if test ! -f "$srcdir/src/laygram.c"; then
fi
fi
AC_PROG_LEX
+AC_PATH_PROG([LEX_INST], $LEX)
+if test ! -f "$srcdir/src/laylex.c"; then
+ if test -z "$LEX_INST"; then
+ AC_MSG_ERROR([lex not found - unable to compile laylex.y])
+ fi
+fi
# Checks for header files.
PKG_CHECK_MODULES(X11, [x11 xt xmu xext])