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-rw-r--r--package/flex/flex.mk2
1 files changed, 1 insertions, 1 deletions
diff --git a/package/flex/flex.mk b/package/flex/flex.mk
index 748365b..2361536 100644
--- a/package/flex/flex.mk
+++ b/package/flex/flex.mk
@@ -11,7 +11,7 @@ FLEX_LICENSE = FLEX
FLEX_LICENSE_FILES = COPYING
FLEX_DEPENDENCIES = \
$(if $(BR2_PACKAGE_GETTEXT_IF_LOCALE),gettext) host-m4
-FLEX_CONF_ENV = M4=/usr/bin/m4
+FLEX_CONF_ENV = ac_cv_path_M4=/usr/bin/m4
# we don't have a host-gettext/libintl
HOST_FLEX_DEPENDENCIES = host-m4