build: Set ac_cv_path_mkdir

Autoconf sets MKDIR_P to a relative path to its install-sh because it
doesn't know BusyBox's mkdir supports "-p".  e2fsprogs's Makefile.in
runs child make processes under subdirectories, breaking the relative
path to install-sh.

1 files changed, 2 insertions, 1 deletions

diff --git a/build b/build
index 3c9120c..84eaa42 100755
--- a/build
+++ b/build
@@ -16,7 +16,8 @@ build:
 		--disable-ubsan \
 		--disable-addrsan \
 		--disable-threadsan \
-		--with-multiarch=$(OPK_HOST_ARCH)
+		--with-multiarch=$(OPK_HOST_ARCH) \
+		ac_cv_path_mkdir=mkdir
 	oh-autobuild
 	touch $@