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我正在尝试在/usr/local/bin/gcc. 默认系统 gcc 是 4.4.6 in /usr/bin/gcc.

同样的头文件：

/usr/include/c++/4.4.4/bits/stl_pair.h /usr/local/include/c++/4.7.1/bits/stl_pair.h

我试图用cd /apps/llvmbuild ; /apps/llvm/configure --prefix=/apps/llvmbuild --enable-optimized --enable-cxx11 --enable-docs=no --enable-targets=host-only --disable-assertions CPPFLAGS=-I/usr/local/include/ CXXFLAGS=-I/usr/local/include/

接着 cd /apps/llvmbuild ; make -j12 ENABLE_OPTIMIZED=1 DISABLE_ASSERTIONS=1

但我收到错误，表明它正在 4.4.6 目录中搜索 c++ 文件： /usr/lib/gcc/x86_64-redhat-linux/4.4.6/../../../../include/c++/4.4.6/exception_ptr.h

locate exception_ptr.h
/usr/include/c++/4.4.4/exception_ptr.h
/usr/local/include/c++/4.7.1/bits/exception_ptr.h
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1 回答 1

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使用CC和CXX环境变量。见configure --help信息：

Some influential environment variables:
  CC          C compiler command
  ...
  CXX         C++ compiler command

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

像这样的东西：

CXX=/usr/local/bin/g++ CC=/usr/local/bin/gcc /apps/llvm/configure --your --other --options
于 2013-08-12T08:11:40.513 回答