In Makefiles the $ must be escaped as $$ in shell uses. Since 8a2390a4f47:
$ make docker [...] NETWORK=1 Enable virtual network interface with default backend. NETWORK=ACKEND Enable virtual network interface with ACKEND. Once escaped: $ make docker [...] NETWORK=1 Enable virtual network interface with default backend. NETWORK=$BACKEND Enable virtual network interface with $BACKEND. Signed-off-by: Philippe Mathieu-Daudé <f4...@amsat.org> --- tests/docker/Makefile.include | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tests/docker/Makefile.include b/tests/docker/Makefile.include index f1a398e9fa..de87341528 100644 --- a/tests/docker/Makefile.include +++ b/tests/docker/Makefile.include @@ -109,7 +109,7 @@ docker: @echo ' DEBUG=1 Stop and drop to shell in the created container' @echo ' before running the command.' @echo ' NETWORK=1 Enable virtual network interface with default backend.' - @echo ' NETWORK=$BACKEND Enable virtual network interface with $BACKEND.' + @echo ' NETWORK=$$BACKEND Enable virtual network interface with $$BACKEND.' @echo ' NOUSER Define to disable adding current user to containers passwd.' @echo ' NOCACHE=1 Ignore cache when build images.' @echo ' EXECUTABLE=<path> Include executable in image.' -- 2.15.0