修改用于构建boost的默认编译器路径

Question

我有一个旧版本的boost 1.33.1。我想用一个自定义的gcc二进制文件构建它，这个文件位于默认路径之外的路径中。我在web上找不到该页面，因此我粘贴了gcc-tools.jam表单tools/build/v1/gcc-tools.jam的第一部分。

版权所有(c) 2001大卫·亚伯拉罕。

  # Copyright (c) 2002-2005 Rene Rivera.
  # Distributed under the Boost Software License, Version 1.0.
  # (See accompanying file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)

  # The following #// line will be used by the regression test table generation
  # program as the column heading for HTML tables. Must not include version number.
  #//<a href="http://gcc.gnu.org/">GNU<br>GCC</a>

  # compute directories for invoking GCC
  #
  # The gcc toolset can be user-configured using the following
  # variables:
  #
  # GCC_ROOT_DIRECTORY
  #       The directory in which GCC was installed. Defaults to
  #       unset. Usually, there is no need to set this variable at
  #       all. However, if G++ is not in the path it is usually
  #       sufficient to configure this one variable. More fine-grained
  #       configuration is available by setting the following:
  #
  # GCC_BIN_DIRECTORY
  #       the directory prefix used to find the gcc executables. Defaults to
  #       $(GCC_ROOT_DIRECTORY)/bin/, or "" if GCC_ROOT_DIRECTORY is
  #       not set.
  #
  # GCC_INCLUDE_DIRECTORY
  #       the directory in which to find system includes. Defaults to
  #       empty.
  #
  # GCC_STDLIB_DIRECTORY
  #       the directory in which to find the standard library
  #       objects associated with this build of gcc. Defaults to
  #       $(GCC_ROOT_DIRECTORY)/lib.
  #
  # GXX
  #       The name by which g++ is invoked. You can also use this in
  #       lieu of setting the <cxxflags> property to force options such
  #       as "-V3.0.4" into the g++ command line: "-sGXX=g++ -V3.0.4".
  #
  # GCC
  #       Similar to GXX, the name by which gcc is invoked for "C"
  #       language targets.

  # singleton variables...
  set-as-singleton GCC_ROOT_DIRECTORY GCC_BIN_DIRECTORY GCC_INCLUDE_DIRECTORY GCC_STDLIB_DIRECTORY ;

  flags gcc GCC_BIN_DIRECTORY : $(GCC_BIN_DIRECTORY) ;
  flags gcc GCC_INCLUDE_DIRECTORY : $(GCC_INCLUDE_DIRECTORY) ;
  flags gcc GCC_STDLIB_DIRECTORY : $(GCC_STDLIB_DIRECTORY) ;

  GCC_BIN_DIRECTORY ?= $(GCC_ROOT_DIRECTORY)$(SLASH)bin ;
  GCC_BIN_DIRECTORY ?= "" ; # Don't clobber tool names if GCC_ROOT_DIRECTORY not set
  GCC_STDLIB_DIRECTORY ?= $(GCC_ROOT_DIRECTORY)$(SLASH)lib ;

  # Make sure this gets set "on" the target
  flags gcc GCC_BIN_DIR : $(GCC_BIN_DIRECTORY) ;

  flags gcc LINKFLAGS <runtime-link>static : -static ;
  flags gcc CFLAGS <debug-symbols>on : -g ;
  flags gcc LINKFLAGS <debug-symbols>on : -g ;
  flags gcc CFLAGS <optimization>off : -O0 ;
  flags gcc CFLAGS <optimization>speed : -O3 ;

在这一部分中，我可以使用注释部分中定义的变量将默认的gcc/g++修改为我自己的。然而，我不知道该怎么做。例如，我写道

 GCC_BIN_DIRECTORY=/opt/gcc-4.1.2/installed

但这给了我这个错误：

 rule GCC_ROOT_DIRECTORY=/opt/gcc-4.1.2/installed unknown in module

那么我该怎么做呢？

Answer 1

这里有一个脚本bjam，或称b2，看看这里：http://www.boost.org/boost-build2/doc/html/bbv2/reference/tools.html#bbv2.reference.tools.compiler.gcc

并尝试：

./b2 root /usr/local/mygcc

应该使用提供的编译器