Compile a native sdb binary when cross building (radareorg#4)

sdb binary may be used by the build machine to compile .sdb files. In
that case it is necessary to have the sdb binary compiled for the build
machine and not for the host one, as it is by default.

Author: ret2libc

meson.build

@@ -118,6 +118,17 @@ sdb_exe = executable('sdb', 'src/main.c',
   implicit_include_directories: false
 )
 
+if meson.is_cross_build()
+  sdb_native_exe = executable('sdb_native', 'src/main.c',
+    include_directories: sdb_inc,
+    link_with: [link_with],
+    install: false,
+    implicit_include_directories: false
+  )
+else
+  sdb_native_exe = sdb_exe
+endif
+
 if not meson.is_subproject()
   install_man(['src/sdb.1'])
 endif