waf: add a cross-execute program that runs natively

This added script is for supporting self-testing of the cross-build
infrastructure using autobuild.

The script can be used as the --cross-execute parameter
to samba's configure process, but it actually runs the program
natively on the build machine. This can be done if the build is
actually a native build disguised as a cross-build, i.e. native
toolchain is being used.

Signed-off-by: Uri Simchoni <urisimchoni@gmail.com>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Alexander Bokovoy <ab@samba.org>

diff --git a/script/identity_cc.sh b/script/identity_cc.sh
new file mode 100755 (executable)
index 0000000..8b5118e
--- /dev/null
+++ b/script/identity_cc.sh
@@ -0,0 +1,10 @@
+#!/bin/sh
+
+#An "identity cross-execute" script
+#It can be used for testing the cross-build infrastructure
+#as follows:
+#./configure --cross-compile --cross-execute=./script/identity_cc.sh
+#If the build is actually a native build, then the configuration
+#result should be just like running ./configure without --cross-compile.
+
+eval "$@"