Cmake string equal CMake String的高级操作（Advanced Operations of CMake String） 2. Use STREQUAL to compare equality of strings (including non-numeric-"valued" strings). txt文件 中使用了一些高版本cmake特有的一些命令的时候，就需要加上这一行，提醒用户升级到该版本之后再执行cmake. True if the given string or variable’s value is lexicographically equal to the string or variable on the right. Intro. Oct 27, 2023 · CMake是一个跨平台、开源的构建系统，它通过配置文件（通常是`CMakeLists. 0, comparing these correctly as well. Jul 31, 2012 · Can I do the same thing in my CMakeLists. CMAKE_CXX_COMPILER_ID is a CMake variable that stores the ID Dec 28, 2021 · 逻辑值 常量值; true: 1、on、yes、true、y、非0数字: false: 0、off、no、false、n、ignore、notfount、空字符串、-notfound结尾字符串 A platform combines multiple tutorials, projects, documentations, questions and answers for developers Feb 16, 2015 · In cmake, how can I check if a string token is included in another string? ( EQUAL ) True if the given string or variable’s value is a valid number and equal to CONFIGURE will transform a string like CONFIGURE_FILE transforms a file. May 21, 2013 · VERSION_GREATER_EQUAL and VERSION_LESS_EQUAL also support multipart version identifiers, such as 14. LENGTH will return a given string’s length. It sometimes takes a quoted string as variable and sometimes it takes a quoted string as a pure string literal, as many other languages do. . Variable expansions in conditionals The if command expands the contents of variables before evaluating their truth value. string is a case-insensitive equal of 0, FALSE, OFF, N, NO, Jun 8, 2022 · 文章浏览阅读1w次，点赞5次，收藏47次。本文详细介绍了CMake中string命令的各种操作，包括查找、替换、正则表达式的应用，以及字符串的连接、大小写转换、长度计算、子串提取等。 CMake offers boolean operator for string comparisons, such as STREQUAL for string equality, and for version comparisons, such as VERSION_EQUAL. 0, True if the given string or variable's value is lexicographically greater than or equal to the string or variable on the right. string(TIMESTAMP <output_variable> [<format_string>] [UTC]) ¶ Write a string representation of the current date and/or time to the <output_variable>. txt`）管理和控制软件的构建过程。在处理字符串方面，CMake提供了丰富的函数和语法用于设置变量、条件判断以及文本操作。 True if the named file or directory is readable. 1 字符串比较（String Comparison） 在CMake中，我们可以使用多种方式来比较字符串。这些比较方法可以分为三类：相等性比较，大小比较，以及字典序比较。 2. >> >> So, STREQUAL treats a parameter as a variable name if it is defined, but >> as >> a string value if it is not. cxx) >> >> Is this quote behavior well treated as strings. SUBSTRING will return a substring of a given string. 1k次，点赞4次，收藏10次。本文详细介绍了CMake中字符串的基本操作，如创建、赋值、连接和计算长度，以及高级操作，包括相等性、大小和字典序比较，全局和单次替换，以及使用正则表达式和STRIP进行字符串分割。 Jul 6, 2021 · 文章浏览阅读1. >> >> Then I learned that the interpreter is the only one that sees quotes >> around >> parameters, for the sole purpose of string interpolation and preventing >> whitespace from splitting a parameter. 1 字符串比较（String Comparison） 在CMake中，我们可以使用多种方式来比较字符串。 Apr 18, 2018 · 格式： 例子： STREQUAL 是 CMAKE 的关键字，用于字符串比较，相同返回 true ${CMAKE_SOURCE_DIR}&#160;是 CMAKE 的自保留变量（拿来用就可以，含义已经确定），文件路径 ${CMAKE_BINARY_DIR}是输出路径 关系操作符 Feb 14, 2013 · Cmake commands do not see these >> quotes. Therefore, STREQUAL can never know the difference between "baz" >> and >> baz. Boolean elements will be returned as ON or OFF. 将输入 <string> 中的每个字节转换为其十六进制表示形式，并将连接的十六进制数字存储在 <output_variable> 中。 输出中的字母（ a 至 f ）为小写。 The above would expand to OLD_COMPILER if the CMAKE_CXX_COMPILER_VERSION is less than 4. 0. 4) 2. (I verified this in cmIfCommand. If string is shorter than length then end of string is used instead. Mar 31, 2022 · 简书是一个创作平台，用户可以在这里发表文章、分享创作灵感，并与其他创作者互动交流。 Dec 19, 2024 · 文章浏览阅读158次。1、string(APPEND …)是用来修改已存在变量的内容，通过追加方式扩展该变量的字符串值。2、string(CONCAT …)是用于合并多个字符串值创建一个新的字符串变量，原有变量的值不会改变。 Nov 6, 2022 · capabilities以JSON格式报告cmake功能。输出是具有以下键的JSON对象：version具有版本信息的JSON对象。关键是：string完整版本字符串，由cmake显示--version。 CMAKE_VERSION¶. The first two components represent the feature level and the third component represents either a bug-fix level or development date. Get an element from <json-string> at the location given by the list of <member|index> arguments. 【设置项目名称。】 这个命令不是 Jan 4, 2020 · TL;DR, check the decision tree and summary. Array and object elements will be returned as a JSON string. Then I learned that the interpreter is the only one that sees quotes around parameters, for the sole purpose of string interpolation and preventing whitespace from splitting a parameter. The if command was written very early in CMake . in CMake versions prior to 4. Behavior is well-defined only for explicit full paths (a leading ~/ is not expanded as a home directory and is considered a relative path). For most beginners, CMake if is a nightmare. Share Follow Mar 21, 2024 · 2. 这是CMake中获取字符串长度的基本操作。在接下来的章节中，我们将介绍更多关于CMake String的高级操作和实际应用。 2. Cmake commands do not see these >> quotes. Number and string types will be returned as strings. <glue> 文字列を使用してすべての <input> 引数を結合し、結果を名前付き <output_variable> に格納します。 リストの要素を結合するには、 list() コマンドの JOIN 演算子を使用することをお勧めします。 】 这行命令是可选的，我们可以不写这句话，但在有些情况下，如果CMakeList. Cmake commands do not see these quotes. and possibly followed by -and other information. cmake_minimum_required(VERSION 2. 1. txt (test if the value is NOT equal)? Slightly longer version: I've got a test for various platforms following the advice found here: IF(${CMAKE_SYSTEM_NAME} MATCHES "Linux") # Linux specific code SET(OperatingSystem "Linux") ENDIF(${CMAKE_SYSTEM_NAME} MATCHES "Linux") Feb 14, 2013 · I thought that parameters explicitly quoted were >> treated as strings. 1 相等性比较（Equality Comparison） Jun 2, 2023 · 文章浏览阅读4. The CMake version string as three non-negative integer components separated by . Sep 8, 2023 · EQUAL is for comparing equality of numeric strings: "True if the given string or variable's value is a valid number and equal to that on the right. 8. TOUPPER/TOLOWER will convert string to upper/lower characters. 4w次，点赞4次，收藏25次。本文详细介绍了cmake中用于字符串搜索、替换、操纵、比较、哈希、生成及json处理的命令，如find、replace、regexmatch、append、prepend、concat、tolower、toupper等，以及它们在实际项目中的应用示例，帮助开发者更好地理解和使用cmake进行字符串操作。 LESS_EQUAL: Checks if one value MATCHES is used to check if the compiler ID string matches a pattern. Therefore, STREQUAL can never know the difference between "baz" and baz. If length is -1 the remainder of the string starting at begin will be returned. Null elements will be returned as an empty string. 2. If the command is unable to obtain a timestamp, the <output_variable> will be set to the empty string "". fqsids ofptczbvj sgffud oykh zjys xus nzfq igcit tcz mzlwv wya orhqj prxn uckp qidmdst