configure: support --param=value style

This commit makes it possible to specify values for configure params
using the common autotools configure syntax '--param=value'.

Signed-off-by: Andrea Claudi <aclaudi@redhat.com>
Acked-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: David Ahern <dsahern@kernel.org>

diff --git a/configure b/configure
index 26e06eb81323ef5e99b39631f9723d0af9399cd9..9a2645d9dd0c22b72ce24886d8e89771bdb5af9a 100755 (executable)
--- a/configure
+++ b/configure
@@ -504,12 +504,18 @@ else
                        --include_dir)
                                shift
                                INCLUDE="$1" ;;
+                       --include_dir=*)
+                               INCLUDE="${1#*=}" ;;
                        --libbpf_dir)
                                shift
                                LIBBPF_DIR="$1" ;;
+                       --libbpf_dir=*)
+                               LIBBPF_DIR="${1#*=}" ;;
                        --libbpf_force)
                                shift
                                LIBBPF_FORCE="$1" ;;
+                       --libbpf_force=*)
+                               LIBBPF_FORCE="${1#*=}" ;;
                        -h | --help)
                                usage 0 ;;
                        --*)