docker-ce: improve hardcoded CC for cross compile

Since commit applied in moby [61a3285 Support cross-compile for arm]
it hardcoded var-CC to support cross-compile for arm

Correct it with "${parameter:-word}" format, it is helpful for user
define toolchains

(Use Default Values.  If parameter is unset or null, the expansion of
word is substituted.  Otherwise, the value of parameter is substituted.)

https://github.com/moby/moby/commit/61a3285864d3f1b489f48f765b61b2c7bd300372

This fixes a build issue seen when building docker-ce:
  exec: "aarch64-linux-gnu-gcc": executable file not found in $PATH

Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/recipes-containers/docker/docker-ce_git.bb b/recipes-containers/docker/docker-ce_git.bb
index a3e27a53..215f1140 100644
--- a/recipes-containers/docker/docker-ce_git.bb
+++ b/recipes-containers/docker/docker-ce_git.bb
@@ -25,6 +25,7 @@ SRC_URI = "\
         git://github.com/docker/libnetwork.git;branch=master;name=libnetwork;destsuffix=git/libnetwork \
         file://0001-libnetwork-use-GO-instead-of-go.patch \
         file://docker.init \
+        file://0001-imporve-hardcoded-CC-on-cross-compile-docker-ce.patch \
         "
 
 require docker.inc