bpf: add meson build rule for allow_bind program

Julia Kartseva · Julia Kartseva · commit 5d90c146414d · 2020-11-18T01:11:27.000-08:00
Use introduced tools/build-bpf.py to compile BPF program from sources.
The target *.h header file with hexdump will reside in the build/
folder.
diff --git a/src/core/bpf/allow_bind/meson.build b/src/core/bpf/allow_bind/meson.build
@@ -0,0 +1,10 @@
+# SPDX-License-Identifier: LGPL-2.1+
+
+allow_bind_hexdump_h = custom_target(
+    'allow-bind-hexdump.h',
+    input : 'allow-bind.c',
+    output : 'allow-bind-hexdump.h',
+    command : [build_bpf_py,
+            '--clang_exec', clang.path(),
+            '--llc_exec', llc.path(),
+            '@INPUT@', '@OUTPUT@'])
diff --git a/src/core/bpf/meson.build b/src/core/bpf/meson.build
@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: LGPL-2.1+
+
+build_bpf_py = find_program('../../../tools/build-bpf.py')
+
+subdir('allow_bind')
diff --git a/src/core/meson.build b/src/core/meson.build
@@ -132,6 +132,11 @@ libcore_sources = '''
         unit.h
 '''.split()
 
+if conf.get('BUILD_BPF') == 1
+        subdir('bpf')
+        libcore_sources += [allow_bind_hexdump_h]
+endif
+
 load_fragment_gperf_gperf = custom_target(
         'load-fragment-gperf.gperf',
         input : 'load-fragment-gperf.gperf.m4',
