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-rw-r--r--var/spack/repos/builtin/packages/bison/package.py2
1 files changed, 2 insertions, 0 deletions
diff --git a/var/spack/repos/builtin/packages/bison/package.py b/var/spack/repos/builtin/packages/bison/package.py
index 7c526fb958..9a2ddcbf96 100644
--- a/var/spack/repos/builtin/packages/bison/package.py
+++ b/var/spack/repos/builtin/packages/bison/package.py
@@ -10,6 +10,8 @@ class Bison(Package):
version('3.0.4', 'a586e11cd4aff49c3ff6d3b6a4c9ccf8')
+ depends_on("m4")
+
def install(self, spec, prefix):
configure("--prefix=%s" % prefix)