Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=47248
Signed-off-by: Matt Turner <matts...@gmail.com>
---
configure.ac | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/configure.ac b/configure.ac
index a2d906a..e7994b0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -66,6 +66,9 @@ if test ! -f "$srcdir/src/glsl/glcpp/glcpp-parse.y"; then
fi
fi
AC_PROG_LEX
+if test "x$LEX" != xflex; then
+ AC_MSG_ERROR([flex not found - unable to compile glcpp-lex.l])
+fi
dnl Our fallback install-sh is a symlink to minstall. Use the existing
dnl configuration in that case.
--
1.7.3.4
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