c – 如何摆脱OSX10.10 SDK中的module.map警告？

概述自从将 Xcode更新到6.3版以来,我在编译C代码时收到了以下警告： /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/usr/include/module.map:1:25: warning: unknown attribute 'extern_ 自从将 Xcode更新到6.3版以来,我在编译C代码时收到了以下警告：

/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/usr/include/module.map:1:25: warning: unkNown attribute 'extern_c' [-Wignored-attributes]module Darwin [system] [extern_c] {                        ^/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/usr/include/module.map:1561:21: warning: unkNown attribute 'extern_c' [-Wignored-attributes]module os [system] [extern_c] {                    ^/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/usr/include/module.map:1577:26: warning: unkNown attribute 'extern_c' [-Wignored-attributes]module libkern [system] [extern_c] {                         ^/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/usr/include/module.map:1602:23: warning: unkNown attribute 'extern_c' [-Wignored-attributes]module ldap [system] [extern_c] {                      ^/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/usr/include/module.map:1635:23: warning: unkNown attribute 'extern_c' [-Wignored-attributes]module krb5 [system] [extern_c] {                      ^/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/usr/include/module.map:1662:22: warning: unkNown attribute 'extern_c' [-Wignored-attributes]module xpc [system] [extern_c] {                     ^

除了忽略-Wignored属性之外,有没有人知道如何解决这个问题？

解决方法 事实证明我使用旧版本的clang和Xcode的SDK.使用默认的clang删除警告. 总结

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