我正在尝试构建 Boost.Log ( http://boost-log.sourceforge.net/libs/log/doc/html/index.html )。我将它添加到我的 boost 源并执行了我常用的 boost 构建命令。

b2 --build-dir="D:\boost\1.51.0\boost" toolset=gcc variant=release link=static threading=multi  runtime-link=static --build-type=complete

但什么也没发生，最后我收到了这个:

D:/boost/1.51.0/src/tools/build/v2/build\generators.jam:1085: in ensure-type from module generators
error: target { simple_event_log.mc. } has no type
D:/boost/1.51.0/src/tools/build/v2/build\generators.jam:1319: in generators.construct from module generators
D:/boost/1.51.0/src/tools/build/v2/build\targets.jam:1495: in construct from module object(typed-target)@491
D:/boost/1.51.0/src/tools/build/v2/build\targets.jam:1298: in object(typed-target)@491.generate from module object(typed-target)@491
D:/boost/1.51.0/src/tools/build/v2/build\targets.jam:732: in generate-really from module object(main-target)@1871

D:/boost/1.51.0/src/tools/build/v2/build\targets.jam:704: in object(main-target)@1871.generate from module object(main-target)@1871
D:/boost/1.51.0/src/tools/build/v2/build\targets.jam:258: in object(project-target)@474.generate from module object(project-target)@474
D:/boost/1.51.0/src/tools/build/v2/build\targets.jam:848: in targets.generate-from-reference from module targets D:/boost/1.51.0/src/tools/build/v2/build\targets.jam:1217: in generate-dependencies from module object(install-target-class)@96
D:/boost/1.51.0/src/tools/build/v2/build\targets.jam:1269: in object(install-target-class)@96.generate from module object(install-target-class)@96
D:/boost/1.51.0/src/tools/build/v2/build\targets.jam:732: in generate-really from module object(main-target)@930 D:/boost/1.51.0/src/tools/build/v2/build\targets.jam:704: in object(main-target)@930.generate from module object(main-target)@930
D:/boost/1.51.0/src/tools/build/v2/build\targets.jam:848: in targets.generate-from-reference from module targets D:/boost/1.51.0/src/tools/build/v2/build\targets.jam:1217: in generate-dependencies from module object(top-level-target)@103
D:/boost/1.51.0/src/tools/build/v2/build\targets.jam:1269: in alias-target-class.generate from module object(top-level-target)@103
D:/boost/1.51.0/src\boostcpp.jam:391: in build-multiple from module object(top-level-target)@103
D:/boost/1.51.0/src\boostcpp.jam:376: in object(top-level-target)@103.generate from module object(top-level-target)@103
D:/boost/1.51.0/src/tools/build/v2/build\targets.jam:732: in generate-really from module object(main-target)@934 D:/boost/1.51.0/src/tools/build/v2/build\targets.jam:704: in object(main-target)@934.generate from module object(main-target)@934
D:/boost/1.51.0/src/tools/build/v2/build\targets.jam:848: in targets.generate-from-reference from module targets D:/boost/1.51.0/src/tools/build/v2/build\targets.jam:1217: in generate-dependencies from module object(top-level-target)@104
D:/boost/1.51.0/src/tools/build/v2/build\targets.jam:1269: in alias-target-class.generate from module object(top-level-target)@104
D:/boost/1.51.0/src\boostcpp.jam:391: in build-multiple from module object(top-level-target)@104
D:/boost/1.51.0/src\boostcpp.jam:376: in object(top-level-target)@104.generate from module object(top-level-target)@104
D:/boost/1.51.0/src/tools/build/v2/build\targets.jam:732: in generate-really from module object(main-target)@935 D:/boost/1.51.0/src/tools/build/v2/build\targets.jam:704: in object(main-target)@935.generate from module object(main-target)@935
D:/boost/1.51.0/src/tools/build/v2/build\targets.jam:258: in object(project-target)@42.generate from module object(project-target)@42
D:/boost/1.51.0/src/tools/build/v2\build-system.jam:736: in load from module build-system
D:\boost\1.51.0\src\tools\build\v2/kernel\modules.jam:283: in import from module modules
D:\boost\1.51.0\src\tools\build\v2/kernel/bootstrap.jam:142: in boost-build from module
D:\boost\1.51.0\src\boost-build.jam:17: in module scope from module                                   

您能否解释一下这是什么意思，或者我如何才能看到更多错误信息？你是如何构建 Boost.Log 的？

最佳答案

可以找到问题的答案here :

Second, at some point the library will require a Message Compiler tool (mc.exe), which is not available in MinGW, Cygwin and MSVC Express Edition. You have two options to settle the problem. In case of MinGW and Cygwin you can use the windmc.exe tool, which is the analogue of the original mc.exe. In order to do that you will have to patch Boost.Build files (in particular, the tools/build/v2/tools/mc.jam file) as described in this ticket. After that you will be able to specify the mc-compiler=windmc option to bjam to build the library.

这是 patch 的链接.应用补丁并传递 mc-compiler=windmc 应该可以解决问题。

注意:另外，如 ticket 中的评论所述，需要在tools\build\v2\tools\gcc.jam中import fortran ;后添加import mc ;。

这是应用补丁后您的 mc.jam 文件的样子(确保您的文件如下所示):

import common ;
import generators ;
import feature : feature get-values ;
import toolset : flags ;
import type ;
import rc ;

feature.feature mc-compiler : mc windmc : propagated ; 
feature.set-default mc-compiler : mc ; 

rule init ( )
{
}

type.register MC : mc ;


# Command line options
feature mc-input-encoding : ansi unicode : free ;
feature mc-output-encoding : unicode ansi : free ;
feature mc-set-customer-bit : no yes : free ;

flags mc.compile MCFLAGS <mc-input-encoding>ansi : -a ;
flags mc.compile MCFLAGS <mc-input-encoding>unicode : -u ;
flags mc.compile MCFLAGS <mc-output-encoding>ansi : -A ;
flags mc.compile MCFLAGS <mc-output-encoding>unicode : -U ;
flags mc.compile MCFLAGS <mc-set-customer-bit>no : ;
flags mc.compile MCFLAGS <mc-set-customer-bit>yes : -c ;

generators.register-standard mc.compile.mc : MC : H RC : <mc-compiler>mc ; 
generators.register-standard mc.compile.windmc : MC : H RC : <mc-compiler>windmc ;

actions compile.mc
{ 
    mc $(MCFLAGS) -h "$(<[1]:DW)" -r "$(<[2]:DW)" "$(>:W)" 
}

actions compile.windmc
{ 
    windmc $(MCFLAGS) -h "$(<[1]:DW)" -r "$(<[2]:DW)" "$(>:W)" 
} 

警告

boost-log\branches\bleeding-edge 无法为我编译 (gcc 4.7.1)。我使用 boost-log\trunk\boost-log 中的那个成功构建(构建于 2012-09-05)。

关于c++ - 使用 Boost.Log 构建 Boost "error: target { simple_event_log.mc. } has no type"，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/12242733/