Makefile ifdef win32. I need to use #ifdef VC++ or somehow like that.
Makefile ifdef win32. No, you can't pass defines to a makefile like this; you need cooperation from the makefile (it has to have variables that could be modified from Make flags to add compiler flags). Make first evaluates the expression when loading the makefile. Don't use conditional compilation in Makefile but only in C source files. The Makefile tests if the target platform is Win32 using conditional directives. Is it possible? The make program allows you to use macros, which are similar to variables. cpp, or foo. 特别是ARM,STM32等实例库, 4 Note that Makefiles are extremely sensitive to spacing. controlled text will be included in the output of the preprocessor if and only if MACRO is defined. Ifdef (The C Preprocessor)This block is called a conditional group. I want users to be able to compile from my Makefile on Linux, BSD, and Windows systems. I found some old mail now, that tells me, that automake doesn't accept that syntax, although it doesn't need to process it. Here's an example of a Makefile that runs an extra command on OS X and which works on OS X and Linux. Overall, 《Makefile工程实践》视频教程，一线开发工程师独家录制，网上首家讲解Makefile的实战课程。从零开始，教你一步一步编写一个工程项目的Makefile，支持使用第三方静态库、动态库，支持指定模块或目录编译生 Assuming make is GNU Make, all the environment variable settings inherited by make are automatically registered as make variable settings. The 文章浏览阅读3k次，点赞11次，收藏13次。 本文详细介绍了Makefile中的条件判断语句ifeq,ifneq,ifdef,ifndef的用法，以及如何进行多条件判断、循环（foreach与shell脚本）、自 Ifdef (The C Preprocessor)This block is called a conditional group. cpp, etc. See 6. _WIN32_WINNT を設定すれば、sdkddkver. out (Linux) to a variable I used #ifdef Win32 for safe calls alike sprintf_s but now I want to build project with MinGW and it's just wrong now. g. That way, your 我希望在 Linux 和 Windows 上构建相同的 Makefile。我在 Linux 上 使用默认的 GNU make ，在 Windows 上使用mingw32-make （也是 GNU make）。 我希望 Makefile 检测 在源代码里面如果这样是定义的： #ifdef MACRONAME //可选代码 #endif Makefile中用宏定义进行条件编译_makefile宏定义预编译-CSDN博客 在源代码里面如果这样是定义的： #ifdef 「ほとんど忘れた、Makefile」 にて： Makefileなんてもう何年も書いたことがないぞ。ウーン、だめだ、忘れている。 「忘れている」ってよりは、僕の知識じゃ古すぎて、改めて勉強しないとダメでした*1 Apart from header guards (that others have explained) they are very useful tool for conditional compilation. Contribute to X16Community/x16-emulator development by creating an account on GitHub. exe (Windows) or a. If the condition is true, make reads the lines of the text-if-true as part of the makefile; if the condition is false, make ignores those lines ただいまの回答率 85. I need to use #ifdef VC++ or somehow like that. Especially for libraries, which e. However, you may write an include directive within a conditional, provided you do The #else directive marks an optional clause of a conditional-compilation block defined by a #ifdef, #ifndef, or #if directive. h provided file defines default . h，那么 WIN32 常量是肯定定义了的，所以不能用于判断平台环境 _WIN32 --32位和64位程序都有，且总是定义的. If the identifier is not defined, the condition is true (nonzero); otherwise, the condition is false (zero). 10 Variables from the Inside MSYS2, compiles do not see _WIN32 or WIN32 definitions but there are __MSYS__ and __CYGWIN__. linux. 30 % 質問をまとめることで 思考を整理して素早く解決 テンプレート機能で 簡単に質問をまとめる トップ C に関する質問 makefileにおけるターゲッ Quoting from the original message: > Hi, > I wanted to use this code in one of my Makefiles: > > ifdef WIN32_EXTRA_LDFLAGS > WIN32_EXTRA_LDFLAGS += -export-symbols $ Currently, when compiling with gcc / g++ under UCRT the _WIN32 define is not set, therefore, many compilations just do not compile. When I saw this I first thought that the #if _WIN32 tests inside Quoting from the original message: > Hi, > I wanted to use this code in one of my Makefiles: > > ifdef WIN32_EXTRA_LDFLAGS > WIN32_EXTRA_LDFLAGS += -export-symbols $ Yes that's a problem with makefiles which don't write a curl_config. 3k次，点赞37次，收藏14次。 [VSCODE] 条件编译代码高亮 #ifdef简述在使用VSCODE编写C代码时, 会遇到条件编译选项. The lines of the makefile following the ifneq are obeyed if the two arguments do not match; otherwise they are ignored. ) Your code could define two mains, and choose The #ifndef directive checks for the opposite of the condition checked by #ifdef. We say that the conditional Note that strictly speaking, WIN32 should not be predefined by the compiler (since it's in the user's namespace) - only _WIN32 should. 30 % 質問をまとめることで 思考を整理して素早く解決 テンプレート機能で 簡単に質問をまとめる トップ C に関する質問 makefileにおけるターゲッ 日常使用 Makefile 编译文件时，可能会遇到需要分条件执行的情况，比如在一个工程文件中，可编译的源文件很多，但是它们的类型是不相同的，所以编译文件使用的编译器也 difference between #if defined (WIN32) and #ifdef (WIN32) Asked 15 years, 9 months ago Modified 1 year, 11 months ago Viewed 155k times C语言因其高效性和可移植性被广泛应用于操作系统、嵌入式系统及跨平台工具链开发。然而，不同操作系统 (如Windows、Linux、macOS)和硬件架构 (x86、ARM)在API、文件 WIN32宏 --只要包含了 Windows. The #if directive controls conditional compilation of the resource file by checking the specified constant expression. The #else directive must be the last directive before Post by Daniel Leidert ifdefendif is GNU make syntax. h にて残りのバージョン定数 WINVER,_WIN32_IE を設定してくれる。 下記に、そのコードを抜粋する。 はじめに C / C++ における #ifdef (および #if) による条件付きコンパイルは強力な道具ですが、使いすぎると非常にメンテナンス性の悪いコードになってしまいます。諸刃の First make sure you're using the proper command, so copy paste the output from Makefile and execute that from your shell (by hand). WIN32 should be set by the SDK being used and/or I used #ifdef Win32 for safe calls alike sprintf_s but now I want to build project with MinGW and it's just wrong now. h file and expect to fully control build behavior even when a config-platform. Maybe your define is undefined along the We use several kinds of conditional directives in a Makefile: ifeq – tests if two strings are equal ifneq – tests if two strings aren’t equal ifdef – the code tests if the variable definition is available ifndef – the condition 文章浏览阅读7. Macros are defined in a Makefile as = pairs. implement Rather than #ifdef-ing the platform-specific code, your build script (make, Cmake, etc). We donʼt have the same concept of namespaces in C. and only link that file. Most common is #ifdef __cplusplus extern "c" #endif It is used to make c++ ifdef WITH_WINCNG CFLAGS += -DLIBSSH2_WINCNG LDLIBS += -lbcrypt -lcrypt32 else CFLAGS += -DLIBSSH2_OPENSSL ifndef OPENSSL_INCLUDE ifeq "$(wildcard Emulator for the Commander X16 8-bit computer. An example has been shown below − MACROS = -me PSROFF = 在开发中经常会遇到需要条件编译一段代码，即： #ifdef DEBUG { 如果定义了DUBUG，则执行此段代码！} #else {否则执行此段代码！} 这就需要通过宏开关来进行条件编译，也就是常说的 Conditionals affect which lines of the makefile make uses. You might generate dependencies for make but that is a very different question. The ifdef directive begins the conditional, and specifies the condition. It determines what to execute based on the expression of the statement. would conditionally compile foo. (Note: It works in Java because we can define one ʻmainʼ for each class namespace. Is it possible? ただいまの回答率 85. If the constant expression is nonzero, #if directs the To prevent intolerable confusion, it is not permitted to start a conditional in one makefile and end it in another. WIN32 should be set by the SDK being used and/or Detect operating system (Windows vs Linux) with a Makefile The following Makefile uses $(OS) to determine the OS and uses ifeq to either assign a. win.