第三章:设置你的第一个 CMake 项目 现在我们已经收集了足够的信息,可以开始讨论 CMake 的核心功能:构建项目。在 CMake 中,一个项目包含管理将我们的解决方案带入生活的所有源文件和配置。配置从执行所有检查开始:目标平台是否受支持,是否拥有所有必要的依赖项和工具,以及提供的编译器是否工作并支持所需功能。 完成...
对于 Python 解释器,相关模块是FindPythonInterp.cmake,随 CMake 一起提供,并设置以下变量: PYTHONINTERP_FOUND,一个布尔值,表示是否找到了解释器 PYTHON_EXECUTABLE,Python 解释器可执行文件的路径 PYTHON_VERSION_STRING,Python 解释器的完整版本号 PYTHON_VERSION_MAJOR,Python 解释器的主版本号 PYTHON_VERSION_MINOR,Py...
零门槛上手:无需学习新语言,基于Python/Shell/Makefile脚本实现,配置直观(支持类Linux的menuconfig),比Buildroot/Yocto更易理解。 双模式驱动: Classic Build:独立构建模式,依赖隔离清晰,支持缓存加速与跨平台部署。 Yocto Build:深度封装Yocto,提供 make 命令层和图形化配置,简化复杂元数据操作。 企业级特性:智能依赖...
foo = $(nullstring) # end of line; there is a space here all: ifeq ($(strip $(foo)),) echo "foo is empty after being stripped" endif ifeq ($(nullstring),) echo "nullstring doesn't even have spaces" endif 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. ...
nullstring = space =$(nullstring)# Make a variable with a single space.all:echo"$(after)"echo start"$(space)"end An undefined variable is actually an empty string! all:# Undefined variables are just empty strings!echo$(nowhere)
# This is an expensive target to build and it does not have proper # makefile dependency information. So, we create a "stamp" file # to record its completion and avoid re-running it. touch $@ build_all_generate_profile: $(MAKE) @DEF_MAKE_RULE@ CFLAGS_NODIST="$(CFLAGS_NODIST)...
Returnthe stringafter making it good. The answer is guaranteed to be unique under the given constraints. Notice that an empty string is also good. Example 1: Input: s = "leEeetcode" Output: "leetcode" Explanation: In the first step, either you choose i = 1 or i = 2, both will re...
Otherwise, it will default to an empty string instead.LIBRARY_EXTENSION = { source = "${CARGO_MAKE_RUST_TARGET_OS}", default_value = "unknown", mapping = {"linux" = "so", "macos" = "dylib", "windows" = "dll", "openbsd" = "so" } }...
nullstring := space := $(nullstring) # end of the line nullstring是一个Empty变量,其中什么也没有,而我们的space的值是一个空格。因为在操作符的右边是很难描述一个空格的,这里采用的技术很管用,先用一个Empty变量来标明变量的值开始了,而后面采用“#”注释符来表示变量定义的终止,这样,我们可以定义出其...
For all types, an optional pathname which begins with/indicates that it acts on the specified sub-directory instead of the current directory The pathname entry can be a virtual path, for example:/virtual(virtual can be any word), in this case, the virtual item appears in the current directo...