gcc 的include path和lib path调整

`gcc -print-prog-name=cc1plus` -v

`g++ -print-prog-name=cc1plus` -v

 

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gcc -dumpspecs > specs

 

When the specs are evaluated, GCC looks for the file <mingw-root>/lib/gcc/mingw32/<gcc-version>/specs

$ gcc -dumpspecs > <mingw-root>/lib/gcc/mingw32/<gcc-version>/specs

 

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​*cpp:

%{posix:-D_POSIX_SOURCE} %{mthreads:-D_MT} -I z:/libx/include

 

*link_libgcc:

%D -L z:/libx/lib

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*local_prefix:

<mingw-root>/local/

 

*local_includes:

-I%(local_prefix)include

 

*local_lib_search:

-L%(local_prefix)lib

 

*cpp:

%(msvcrt_version) %{posix:-D_POSIX_SOURCE} %{mthreads:-D_MT} %(local_includes)

 

*link_libgcc:

%D %(local_lib_search)

 

*cc1plus:

%(local_includes)

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$ C_INCLUDE_PATH=/opt/gdbm-1.8.3/include

$ export C_INCLUDE_PATH

 

$ CPLUS_INCLUDE_PATH=/opt/gdbm-1.8.3/include

$ export CPLUS_INCLUDE_PATH

 

$ LIBRARY_PATH=/opt/gdbm-1.8.3/lib

$ export LIBRARY_PATH

 

http://www.mingw.org/node/25

http://www.network-theory.co.uk/docs/gccintro/gccintro_23.html

http://gcc.gnu.org/onlinedocs/gcc/Environment-Variables.html