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-rw-r--r--gnu/packages/flex.scm2
1 files changed, 2 insertions, 0 deletions
diff --git a/gnu/packages/flex.scm b/gnu/packages/flex.scm
index e76535cc17..5b86a8dbdd 100644
--- a/gnu/packages/flex.scm
+++ b/gnu/packages/flex.scm
@@ -60,6 +60,8 @@
(inputs (alist-delete "flex" (package-inputs bison))))))
`(("bison" ,bison-for-tests)
("indent" ,indent))))
+ ;; m4 is not present in PATH when cross-building
+ (native-inputs ("m4" ,m4))
(propagated-inputs `(("m4" ,m4)))
(home-page "http://flex.sourceforge.net/")
(synopsis "Fast lexical analyser generator")