Question

我在我的iPhone项目中包含了amalgamation sqlite代码，并删除了对iPhone sqlite框架的引用。

我的主要目标编译好。

我有第二个使用google framework进行单元测试的目标。编译时我得到：

错误：'@'令牌之前的语法错误

我不明白为什么。我已将两个项目都设置为sdk 2.

更新：我包含了sqlite代码的链接＆amp;谷歌。我必须补充说，在我添加sqlite代码之前，目标编译好几个月。我没有发布示例代码，因为我收到1263错误 - 所以我在所有文件中都出错 - 但这是一个示例回溯：

@class NSString, Protocol; <== ERROR HERE

回溯：

        cd /Users/trtrrtrtr/mamcx/projects/JhonSell/iPhone
        setenv PATH "/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin:/Developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin"
        /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/gcc-4.0 -x c-header -arch i386 -fmessage-length=0 -pipe -std=c99 -Wno-trigraphs -fpascal-strings -fasm-blocks -O0 -Wreturn-type -Wunused-variable -D__IPHONE_OS_VERSION_MIN_REQUIRED=20000 -isysroot /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator2.2.1.sdk -fvisibility=hidden -mmacosx-version-min=10.5 -gdwarf-2 -iquote /Users/trtrrtrtr/mamcx/projects/JhonSell/iPhone/build/JhonSell.build/Debug-iphonesimulator/Testing.build/Testing-generated-files.hmap -I/Users/trtrrtrtr/mamcx/projects/JhonSell/iPhone/build/JhonSell.build/Debug-iphonesimulator/Testing.build/Testing-own-target-headers.hmap -I/Users/trtrrtrtr/mamcx/projects/JhonSell/iPhone/build/JhonSell.build/Debug-iphonesimulator/Testing.build/Testing-all-target-headers.hmap -iquote /Users/trtrrtrtr/mamcx/projects/JhonSell/iPhone/build/JhonSell.build/Debug-iphonesimulator/Testing.build/Testing-project-headers.hmap -F/Users/trtrrtrtr/mamcx/projects/JhonSell/iPhone/build/Debug-iphonesimulator -F/Volumes/CrashReporter-1.0-rc2/CrashReporter-iPhone -F/Users/trtrrtrtr/mamcx/projects/JhonSell/iPhone -I/Users/trtrrtrtr/mamcx/projects/JhonSell/iPhone/build/Debug-iphonesimulator/include -I/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator2.2.1.sdk/usr/include/libxml2 "-I/Developer/RemObjects Software/Source" -I/Users/trtrrtrtr/mamcx/projects/JhonSell/iPhone/build/JhonSell.build/Debug-iphonesimulator/Testing.build/DerivedSources/i386 -I/Users/trtrrtrtr/mamcx/projects/JhonSell/iPhone/build/JhonSell.build/Debug-iphonesimulator/Testing.build/DerivedSources -c /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator2.2.1.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIKit.h -o /var/folders/EA/EAmC8fuyElexZfnpnjdyr++++TI/-Caches-/com.apple.Xcode.501/SharedPrecompiledHeaders/UIKit-dqqtnrciylhdtjbmyglpcezxchmz/UIKit.h.gch
    In file included from /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator2.2.1.sdk/System/Library/Frameworks/Foundation.framework/Headers/Foundation.h:12,
                     from /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator2.2.1.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIAccelerometer.h:8,
                     from /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator2.2.1.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIKit.h:9:
    /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator2.2.1.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObjCRuntime.h:120: 
error: syntax error before '@' token

Answer 1

我终于弄明白了这个问题。

我将其从iPhone目标复制到测试目标：

GCC_DYNAMIC_NO_PIC = NO
GCC_OPTIMIZATION_LEVEL = 0
GCC_PRECOMPILE_PREFIX_HEADER = YES
GCC_PREFIX_HEADER = JhonSell_Prefix.pch
GCC_PREPROCESSOR_DEFINITIONS = DEBUG

但为什么在我没有问题之前呢？我真的不明白。

Answer 2

很少继续下去，我的猜测是包含来自C / C ++实现文件的Objective C头，因此用C / C ++而不是Objective C / Objective C ++编译头文件。

查看更新后的信息，实际上是在编译头文件，即UIKit.h。编译器不知道它是什么类型的头文件，所以默认为C，当然没有@class，因此语法错误。

所以你必须弄清楚为什么Xcode想要在你的第二个目标中编译 UIKit.h。

Answer 3

您的gcc命令行正在将.h文件编译为.gch文件。

    /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/gcc-4.0
    # ...
    -x c-header -arch i386 -fmessage-length=0 -pipe -std=c99 -Wno-trigraphs # ...
    # ...
    # THE INPUT FILE:
    /Developer/Platforms/iPhoneSimulator.platform/Developer/
      SDKs/iPhoneSimulator2.2.1.sdk/System/Library/Framework/
      UIKit.framework/Headers/UIKit.h
    # THE OUTPUT FILE:
    -o /var/folders/EA/EAmC8fuyElexZfnpnjdyr++++TI/
       -Caches-/com.apple.Xcode.501/
       SharedPrecompiledHeaders/UIKit-dqqtnrciylhdtjbmyglpcezxchmz/UIKit.h.gch

即。 UIKit.h转换为UIKit.h.gch：将头文件转换为“预编译”标头，可以更快地包含，因为它是标记化形式。

看起来编译器不知道它应该预编译一个头;它以某种方式配置错误，只是将其视为实际编译的代码，并因为代码是Objective C而窒息。

错误：'@'令牌之前的语法错误（为什么？）

3 个答案: