我尝试编译这个库＆＃34; github.com/marzac/rs232 /"符合本教程＆＃34; http://digego.github.io/extempore/c-xtlang-interop.html＆＃34;在linux 64位机器上。 我收到了这个错误。：
robert@hog:~/rs232/rs232$ clang rs232-linux.c -dynamiclib -o librs232.so
clang: warning: argument unused during compilation: '-dynamiclib'
rs232-linux.c:42:9: warning: '__USE_MISC' macro redefined [-Wmacro-redefined]
#define __USE_MISC // For CRTSCTS
^
/usr/include/features.h:317:10: note: previous definition is here
# define __USE_MISC 1
^
1 warning generated.
/usr/bin/../lib/gcc/x86_64-linux-gnu/5.4.0/../../../x86_64-linux-gnu/crt1.o: In function `_start':
(.text+0x20): undefined reference to `main'
clang: error: linker command failed with exit code 1 (use -v to see invocation)
我发现的唯一一件事是clang缺少主要功能，因为它不知道它应该是一个动态库。所以当我添加＆＃34; -shared＆＃34;我得到这个错误：
robert@hog:~/rs232/rs232$ clang rs232-linux.c -shared -dynamiclib -o librs232.so
clang: warning: argument unused during compilation: '-dynamiclib'
rs232-linux.c:42:9: warning: '__USE_MISC' macro redefined [-Wmacro-redefined]
#define __USE_MISC // For CRTSCTS
^
/usr/include/features.h:317:10: note: previous definition is here
# define __USE_MISC 1
^
1 warning generated.
/usr/bin/ld: /tmp/rs232-linux-66934f.o: relocation R_X86_64_32S against `.bss' can not be used when making a shared object; recompile with -fPIC
/tmp/rs232-linux-66934f.o: error adding symbols: Bad value
clang: error: linker command failed with exit code 1 (use -v to see invocation)
我几乎没有编译c代码或编写c代码的经验。 任何帮助将非常感激。
的问候，
罗伯特