如何包含库.h文件？

Question

我已经成功地从简单的Dagger-2代码中生成了Objc .m和.h文件。

https://gist.github.com/OscarRyz/ffd976fcae9acf87dbe1

现在，我试图使用j2objcc编译这些文件，但是错误消息说它找不到Dagger-2类的.h：

j2objcc  -c  -I. `find app -name *.m`
In file included from app/DaggerSearchComponent.m:10:
./app/SearchInPage_Factory.h:10:10: fatal error: 'dagger/internal/Factory.h' file not found
#include "dagger/internal/Factory.h"
         ^
1 error generated.
app/SearchComponent.m:11:10: fatal error: 'dagger/Component.h' file not found
#include "dagger/Component.h"
         ^
1 error generated.
In file included from app/SearchInPage_Factory.m:8:
./app/SearchInPage_Factory.h:10:10: fatal error: 'dagger/internal/Factory.h' file not found
#include "dagger/internal/Factory.h"
         ^
1 error generated.
In file included from app/SearchInPage_MembersInjector.m:9:
./app/SearchInPage_MembersInjector.h:10:10: fatal error: 'dagger/MembersInjector.h' file not found
#include "dagger/MembersInjector.h"
         ^
1 error generated.
app/SearchModule.m:10:10: fatal error: 'dagger/Module.h' file not found
#include "dagger/Module.h"
         ^
1 error generated.
In file included from app/SearchModule_ProvideHostFactory.m:8:
./app/SearchModule_ProvideHostFactory.h:10:10: fatal error: 'dagger/internal/Factory.h' file not found
#include "dagger/internal/Factory.h"
         ^
1 error generated.
In file included from app/SearchModule_ProvideHttpClientFactory.m:9:
./app/SearchModule_ProvideHttpClientFactory.h:10:10: fatal error: 'dagger/internal/Factory.h' file not found
#include "dagger/internal/Factory.h"
         ^
1 error generated.

问:这是否意味着我需要在生成ObjC代码的同时获得库源代码，以便为这些代码生成.h？

Answer 1

原始答案来自@tabll

匕首不是在j2objc中分发的，所以您必须自己构建它。要做到这一点(需要Maven，在Building wiki中进行了描述)：

git clone https://github.com/google/dagger.git
cd dagger
mvn install
j2objc -d build -classpath $J2OBJC_HOME/lib/javax-inject.jar -sourcepath core/src/main/java `find core/src/main/java -name *.java`
cd build
j2objcc -c -I. `find dagger -name *.m`
ar -r libdagger.a *.o

注意:指定J2OBJC_HOME，或者在您的j2objc发行版中解压缩，或者如果您构建j2objc，则指定它的dist目录。要进行测试，"ls $ j2objc _HOME/j2objc“应该列出j2objc脚本。

这些指令生成macosx架构，在测试时非常有用。这些文件需要为您想要使用的每个体系结构重新编译--最简单的方法是在Xcode中创建一个静态库项目，添加已翻译的文件，然后将该项目包含到您的应用程序中，并将其作为应用程序的依赖项添加。

ar将警告“libdagger.a(Packy-info.o)没有符号”，这可以忽略，因为它没有任何符号。