如何在运行configure时覆盖环境变量?

时间:2010-04-26 23:18:38

标签: include environment-variables autotools configure

在Linux的任何主要软件包中,运行./configure --help将在结尾输出:

Some influential environment variables:
      CC          C compiler command
      CFLAGS      C compiler flags
      LDFLAGS     linker flags, e.g. -L<lib dir> if you have libraries in a
                  nonstandard directory <lib dir>
      CPPFLAGS    C/C++ preprocessor flags, e.g. -I<include dir> if you have
                  headers in a nonstandard directory <include dir>
      CPP         C preprocessor

Use these variables to override the choices made by `configure' or to help
it to find libraries and programs with nonstandard names/locations.

如何使用这些变量来包含目录?我尝试运行./configure --CFLAGS="-I/home/package/custom/"./configure CFLAGS="-I/home/package/custom/",但这些都不起作用。有什么建议吗?

2 个答案:

答案 0 :(得分:5)

-I需要使用的变量是CPPFLAGS,而不是CFLAGS。 (正如它在您复制的帮助消息中所说的那样。)CPP代表“C预处理器”,而不是C ++。所以:

./configure CPPFLAGS='-I/home/package/custom'

答案 1 :(得分:1)

这些不是传递给configure的标志。这些是您需要设置的环境变量。例如export CFLAGS="-I foo"