如何让项目将构建输出与Scons放在同一目录中？

Question

背景

我正在通过设置一个包含两个子项目的基本C++示例项目来尝试Scons:

• Prj1是依赖于Prj2的EXE
• Prj2是一个导出一些函数的DLL

我遇到的问题是该库在与SConscript文件相同的目录中构建其.obj,.pdb,.lib,.dll等文件,而EXE在与SConscript相同的目录中构建其文件.应用程序成功构建了Prj2依赖项及其自身.但是,您无法运行生成的EXE,因为它无法找到所需的库,因为它位于其他目录中.

题

如何才能获得多个依赖于将二进制文件和调试信息输出到公共目录的项目,以便可以执行和调试它们？

潜在解决方案

这是我到目前为止所想到的:

• 我尝试使用VariantDir(以前称为BuildDir),但这似乎不起作用.也许我在搞乱这里的东西.
• 我可以明确地告诉编译器和链接器(例如通过Fo/Fd)放置文件的位置(这是最好还是唯一的解决方案???)
• 在生成的二进制文件上执行复制命令(这看起来像是一个黑客,管理/维护非常痛苦)

更新

我更新了下面的文件结构和文件内容,以完整地反映其中的工作解决方案.感谢他的洞察力.

命令

使用此配置,您必须通过cd到构建目录然后运行以下命令来执行构建.我需要一个正常工作的别名设置来解决这个问题.

build> scons ../bin/project1.exe

文件结构

    /scons-sample
       /bin
          /release
          /debug
       /build
           SConstruct
           scons_helper.py
       /prj1
           SConscript
           /include
           /src
              main.cpp
       /prj2
          SConscript
          /include
             functions.h
          /src
             functions.cpp        

SConstruct

import os.path

BIN_DIR = '../bin'
OBJ_DIR = './obj'

#--------------------------------------
#            CxxTest Options
#--------------------------------------
CXXTEST_DIR = '../extern/CxxTest/CxxTest-latest'
PERL = 'perl -w'
TESTS = '*.h'
TESTGEN = PERL + CXXTEST_DIR + '/cxxtestgen.pl'
CXXTESTGEN_FLAGS = '--runner=ParenPrinter \
                    --abort-on-fail \
                    --have-eh'

#--------------------------------------
#            Options
#--------------------------------------
SetOption( 'implicit_cache', 1 )

# command line options
opts = Options()
opts.AddOptions(
EnumOption(
            'debug',
            'Debug version (useful for developers only)',
            'no',
            allowed_values = ('yes', 'no'),
            map = { },
            ignorecase = 1
        )
)

#--------------------------------------
#           Environment
#--------------------------------------
env = Environment( 

    options = opts,

    #--------------------------------------
    #           Linker Options
    #--------------------------------------
    LIBPATH = [
                '../extern/wxWidgets/wxWidgets-latest/lib/vc_dll'
              ],

    LIBS =  [
               # 'wxmsw28d_core.lib',
               # 'wxbase28d.lib',
               # 'wxbase28d_odbc.lib',
               # 'wxbase28d_net.lib',
                'kernel32.lib',
                'user32.lib',
                'gdi32.lib',
                'winspool.lib',
                'comdlg32.lib',
                'advapi32.lib',
                'shell32.lib',
                'ole32.lib',
                'oleaut32.lib',
                'uuid.lib',
                'odbc32.lib',
                'odbccp32.lib'
            ],

    LINKFLAGS = '/nologo /subsystem:console /incremental:yes /debug /machine:I386',

    #--------------------------------------
    #           Compiler Options
    #--------------------------------------
    CPPPATH = [
                './include/', 
                '../extern/wxWidgets/wxWidgets-latest/include',
                '../extern/wxWidgets/wxWidgets-latest/vc_dll/mswd'
               ],

    CPPDEFINES = [ 
                    'WIN32',
                    '_DEBUG',
                    '_CONSOLE',
                    '_MBCS',
                    'WXUSINGDLL',
                    '__WXDEBUG__'
                 ],

    CCFLAGS = '/W4 /EHsc /RTC1 /MDd /nologo /Zi /TP /errorReport:prompt'
)

env.Decider( 'MD5-timestamp' )        # For speed, use timestamps for change, followed by MD5
Export( 'env', 'BIN_DIR' )          # Export this environment for use by the SConscript files

#--------------------------------------
#           Builders
#--------------------------------------
SConscript( '../prj1/SConscript' )
SConscript( '../prj2/SConscript' )
Default( 'prj1' )

scons_helper.py

import os.path

#--------------------------------------
#            Functions
#--------------------------------------

# Prepends the full path information to the output directory so that the build
# files are dropped into the directory specified by trgt rather than in the 
# same directory as the SConscript file.
# 
# Parameters:
#   env     - The environment to assign the Program value for
#   outdir  - The relative path to the location you want the Program binary to be placed
#   trgt    - The target application name (without extension)
#   srcs    - The list of source files
# Ref:
#   Credit grieve and his local SCons guru for this: 
#   http://stackoverflow.com/questions/279860/how-do-i-get-projects-to-place-their-build-output-into-the-same-directory-with
def PrefixProgram(env, outdir, trgt, srcs):
    env.Program(target = os.path.join(outdir, trgt), source = srcs)

# Similar to PrefixProgram above, except for SharedLibrary
def PrefixSharedLibrary(env, outdir, trgt, srcs):
    env.SharedLibrary(target = os.path.join(outdir, trgt), source = srcs)

def PrefixFilename(filename, extensions):
    return [(filename + ext) for ext in extensions]

# Prefix the source files names with the source directory
def PrefixSources(srcdir, srcs):
    return  [os.path.join(srcdir, x) for x in srcs]

Prj1的SConscript

import os.path
import sys
sys.path.append( '../build' )
from scons_helper import *

Import( 'env', 'BIN_DIR' )        # Import the common environment

prj1_env = env.Clone()          # Clone it so we don't make changes to the global one

#--------------------------------------
#           Project Options
#--------------------------------------
PROG = 'project1'

#--------------------------------------
#            Header Files
#--------------------------------------
INC_DIR = [
            '../prj2/include'
          ]

HEADERS = [
            ''
          ]

#--------------------------------------
#            Source Files
#--------------------------------------
SRC_DIR = './src'
SOURCES = [
            'main.cpp'
          ]
# Prefix the source files names with the source directory
SOURCES = PrefixSources( SRC_DIR, SOURCES )

#--------------------------------------
#      Compiler and Linker Overrides
#--------------------------------------
prj1_env.Append(
    CPPPATH = INC_DIR,
    LIBS = 'project2',
    LIBPATH = BIN_DIR,

    # Microsoft Visual Studio Specific
    PDB = os.path.join( BIN_DIR, PROG + '.pdb' )
)

#--------------------------------------
#            Builders
#--------------------------------------
PrefixProgram( prj1_env, BIN_DIR, PROG, SOURCES )

Prj2的SConscript

import os.path   
import sys
sys.path.append( '../build' )
from scons_helper import *

Import( 'env', 'BIN_DIR' )        # Import the common environment

prj2_env = env.Clone()          # Clone it so we don't make changes to the global one

#--------------------------------------
#           Project Options
#--------------------------------------
PROG = 'project2'

#--------------------------------------
#            Header Files
#--------------------------------------
INC_DIR = [
             ''
          ]
HEADERS = [
            'functions.h'
          ]

#--------------------------------------
#            Source Files
#--------------------------------------
SRC_DIR = './src/'
SOURCES = [
            'functions.cpp'
          ]
# Prefix the source files names with the source directory
SOURCES = PrefixSources( SRC_DIR, SOURCES )

#--------------------------------------
#      Compiler and Linker Overrides
#--------------------------------------
# Update the environment with the project specific information
prj2_env.Append(
    CPPPATH = INC_DIR,

    # Microsoft Visual Studio Specific
    PDB = os.path.join( BIN_DIR, PROG + '.pdb' )
)

#--------------------------------------
#               Builders
#--------------------------------------
PrefixSharedLibrary( prj2_env, BIN_DIR, PROG, SOURCES )

Answer 1

好的第三次尝试是一种魅力.我只是把它放在一个新的答案,以保持清洁.我和我当地的scons guru交谈过,他说安装方法应该可行,但有一个更简单的方法.

只需定义您希望可执行文件(或dll)的完整路径.所以:

prj2_env.Program(target = os.path.join(BIN_DIR,PROG), source = SOURCES )

如果您不想在所有地方都这样做,您可以创建一个全局功能:

def PrefixProgram(env, trgt, srcs):
    env.Program(target = os.path.join(env.["MY_OUTPUT_DIR"], trgt), source = srcs)

然后在你的SConscript中,类似于:

import ('PrefixProgram')
# stuff ...
PrefixProgram(prj2_env, PROG, SOURCES)

请注意,您可以将自己的属性添加到环境中

env["MY_OUTPUT_DIR"]

来自.我从袖口写下了这个,所以期待一些小的语法错误,什么不是.显然,您可以对共享库和静态库应用相同的技巧.

为了充分披露,我向当地的scons guru提供了自己回答这个问题的机会,但他很害怕他会沉迷于该网站并拒绝.:)