Export libbpf headers from bpf/ directory

The Makefile for libbpf installs some of the headers from src/ under
bpf/, and dwarves now relies on this fact when it includes btf.h and
libbpf.h. Add a genrule to copy the headers to bpf/ and export them
with libbpf.

Test: build pahole
Signed-off-by: Connor O'Brien <connoro@google.com>
Change-Id: I31b56aa20f1a73ad70cf94e224e0ea8761f25512

1 files changed, 25 insertions, 0 deletions

diff --git a/Android.bp b/Android.bp
index c2b845e..ec55963 100644
--- a/Android.bp
+++ b/Android.bp
@@ -12,6 +12,29 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+genrule {
+    name: "libbpf_headers",
+    srcs: [
+        "src/*.h",
+    ],
+    cmd: "mkdir -p $(genDir)/bpf && cp $(in) $(genDir)/bpf/",
+    out: [
+        "bpf/bpf_core_read.h",
+        "bpf/bpf_endian.h",
+        "bpf/bpf.h",
+        "bpf/bpf_helper_defs.h",
+        "bpf/bpf_helpers.h",
+        "bpf/bpf_tracing.h",
+        "bpf/btf.h",
+        "bpf/libbpf_common.h",
+        "bpf/libbpf.h",
+        "bpf/libbpf_legacy.h",
+        "bpf/libbpf_version.h",
+        "bpf/skel_internal.h",
+        "bpf/xsk.h",
+    ],
+}
+
 cc_library_host_static {
     name: "libbpf",
     srcs: [
@@ -24,6 +47,8 @@ cc_library_host_static {
     export_include_dirs: [
         "include/uapi",
     ],
+    generated_headers: ["libbpf_headers"],
+    export_generated_headers: ["libbpf_headers"],
     cflags: [
         "-DCOMPAT_NEED_REALLOCARRAY",
         "-Wno-missing-field-initializers",