Linux 下cmake编译工程出现 "major" is defined冲突？如何解决？

[JUMP-ZYX]

[build] /home/MicroOcpp/./src/MicroOcpp/Version.h:30:13: warning: In the GNU C Library, "major" is defined
[build] by <sys/sysmacros.h>. For historical compatibility, it is
[build] currently defined by <sys/types.h> as well, but we plan to
[build] remove this soon. To use "major", include <sys/sysmacros.h>
[build] directly. If you did not intend to use a system-defined macro
[build] "major", you should undefine it after including <sys/types.h>.
[build] ProtocolVersion(int major = 1, int minor = 6, int patch = 0) : major(major), minor(minor), patch(patch) { }

‘const int MicroOcpp::ProtocolVersion::minor’ should be initialized

出错代码
/*

• OCPP version type, defined in Model
  */
  struct ProtocolVersion {
  const int major, minor, patch;
  ProtocolVersion(int major = 1, int minor = 6, int patch = 0) : major(major), minor(minor), patch(patch) { }
  };

}

[ryanchang419]

Me same ! do you solve this problem ?

[nithinmanne]

I was able to get the code to build by making the following change in Version.h. But I'm not sure what the cause is, or why this change fixes it.

Add this before definition of struct ProtocolVersion.

#ifdef major
#undef major
#endif

#ifdef minor
#undef minor
#endif

Git Patch:

diff --git a/src/MicroOcpp/Version.h b/src/MicroOcpp/Version.h
index 92a2ea4..a61fa19 100644
--- a/src/MicroOcpp/Version.h
+++ b/src/MicroOcpp/Version.h
@@ -22,6 +22,14 @@
 
 namespace MicroOcpp {
 
+#ifdef major
+#undef major
+#endif
+
+#ifdef minor
+#undef minor
+#endif
+
 /*
  * OCPP version type, defined in Model
  */