首先,在Makefile中定义一个目标规则,例如check_dir,用于检查文件夹是否存在。 makefile check_dir: @echo "Checking if directory exists..." 2. 使用shell命令检查文件夹是否存在 接下来,在该目标规则中使用shell命令来检查文件夹是否存在。这里可以使用[ -d <directory> ]来判断文件夹是否存在,并通过$$...
▌添加 CheckFunctionExists 宏 首先在顶层 CMakeLists 文件中添加 CheckFunctionExists.cmake 宏,并调用check_function_exists命令测试链接器是否能够在链接阶段找到pow函数。 # 检查系统是否支持 pow 函数include(${CMAKE_ROOT}/Modules/CheckFunctionExists.cmake)check_function_exists(pow HAVE_POW) 将上面这段代码...
The above command makes the shell run the script named configure which exists in the current directory. The configure script basically consists of many lines which are used to check some details about the machine on which the software is going to be installed. This script checks for lots of d...
Qt makefile错误你分享的makefile似乎是正确的，除了这个makefile之外，在Debug或Release文件夹中还会有一...
The above command makes the shell run the script named configure which exists in the current directory. The configure script basically consists of many lines which are used to check some details about the machine on which the software is going to be installed. This script checks for lots of ...
.u-boot.bin.cmd里面定义了一个变量:cmd_u-boot.bin,此变量的值为“cp u-boot-dtb.bin u-boot.bin”,也就是拷贝一份u-boot-dtb.bin文件,并且重命名为u-boot.bin,这个就是u-boot.bin的来源,来自于文件u-boot-dtb.bin。 u-boot-dtb.bin是怎么来的呢?文件.u-boot-dtb.bin.cmd就是用于生成u-boot...
# 列出所有虚拟环境 conda env list # 创建虚拟环境 conda create -n name python=3.6 # 删除...
Check if a variable is empty nullstring = foo =$(nullstring)# end of line; there is a space hereall:ifeq($(strip$(foo)),) echo"foo is empty after being stripped"endififeq($(nullstring),) echo"nullstring doesn't even have spaces"endif ...
# check that the output directory actually exists # 在输出目录中调用第二个make,传递相关变量检查输出目录是否确实存在 saved-output := $(KBUILD_OUTPUT) KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \ && /bin/pwd) ...
echo Please go to$(WEBSUB)/ and upload the tarball manually.; }handin-check:@if ! test -d .git; then \ echo No .git directory, is this a git repository?; \ false; \ fi @if test"$$(git symbolic-ref HEAD)"!= refs/heads/lab$(LAB); then \ ...