如何将条件编译符号(DefineConstants)传递给msbuild

Question

所以,这个和这个都很清楚.简单地通过/p:DefineConstants="SYMBOL"

它对我来说根本不起作用,即使在测试项目中也是如此.我期望传递/ p:DefineConstants ="SYMBOL"将覆盖csproj中定义的任何条件编译常量.不是这样的......

完整代码列表如下:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace DefineConstants
{
    class Program
    {
        static void Main(string[] args)
        {
#if DEV
            Console.WriteLine("DEV");
#elif UAT 
            Console.WriteLine("UAT");
#else
            Console.WriteLine("No environment provided");
#endif
        }
    }
}

.csproj文件是:

<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <PropertyGroup>
    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
    <Platform Condition=" '$(Platform)' == '' ">x86</Platform>
    <ProductVersion>8.0.30703</ProductVersion>
    <SchemaVersion>2.0</SchemaVersion>
    <ProjectGuid>{57A2E870-0547-475C-B0EB-66CF9A2FE417}</ProjectGuid>
    <OutputType>Exe</OutputType>
    <AppDesignerFolder>Properties</AppDesignerFolder>
    <RootNamespace>DefineConstants</RootNamespace>
    <AssemblyName>DefineConstants</AssemblyName>
    <TargetFrameworkVersion>v3.5</TargetFrameworkVersion>
    <FileAlignment>512</FileAlignment>
  </PropertyGroup>
  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|x86' ">
    <PlatformTarget>x86</PlatformTarget>
    <DebugSymbols>true</DebugSymbols>
    <DebugType>full</DebugType>
    <Optimize>false</Optimize>
    <OutputPath>bin\Debug\</OutputPath>
    <DefineConstants>TRACE;DEBUG</DefineConstants>
    <ErrorReport>prompt</ErrorReport>
    <WarningLevel>4</WarningLevel>
  </PropertyGroup>
  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|x86' ">
    <PlatformTarget>x86</PlatformTarget>
    <DebugType>pdbonly</DebugType>
    <Optimize>true</Optimize>
    <OutputPath>bin\Release\</OutputPath>
    <DefineConstants>TRACE</DefineConstants>
    <ErrorReport>prompt</ErrorReport>
    <WarningLevel>4</WarningLevel>
  </PropertyGroup>
  <ItemGroup>
    <Reference Include="System" />
    <Reference Include="System.Core" />
    <Reference Include="System.Xml.Linq" />
    <Reference Include="System.Data.DataSetExtensions" />
    <Reference Include="System.Data" />
    <Reference Include="System.Xml" />
  </ItemGroup>
  <ItemGroup>
    <Compile Include="Program.cs" />
    <Compile Include="Properties\AssemblyInfo.cs" />
  </ItemGroup>
  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
       Other similar extension points exist, see Microsoft.Common.targets.
  <Target Name="BeforeBuild">
  </Target>
  <Target Name="AfterBuild">
  </Target>
  -->
</Project>

建造使用:

C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild DefineConstants.sln /p:DefineConstants="DEV;DEBUG" /p:Configuration="Debug" /p:Platform="x86"

运行程序显示:

No environment provided

救命!

Answer 1

使用DefineConstants绝对可行.这意味着你做错了什么.我的猜测是你首先构建项目而没有定义任何东西,然后重新构建它.然后,MSBuild将看到项目已经构建并且不会再次构建,而只是复制输出文件.您应该发布msbuild的输出,以便我们可以确定,但作为参考我只使用必要的开关编译您的项目,这是结果(省略完整的msbuild输出):

> msbuild ConsoleApplication1.sln /p:DefineConstants="DEV" /t:Rebuild
....
Building solution configuration "Debug|x86".
Project ... is building ConsoleApplication1.csproj" (Rebuild target(s)).
...
> ConsoleApplication1\bin\Debug\DefineConstants.exe
DEV
> msbuild ConsoleApplication1.sln /p:DefineConstants="UAT" /t:Rebuild
...
> ConsoleApplication1\bin\Debug\DefineConstants.exe
UAT
> msbuild ConsoleApplication1.sln /t:Rebuild
...
> ConsoleApplication1\bin\Debug\DefineConstants.exe
No environment provided