```makefile ifeq ($(wildcard $(CONFIG_FILE)),) $(error Config file not found) endif ``` 上述代码使用wildcard函数判断配置文件是否存在,如果不存在,则输出错误信息。 通过以上示例,我们可以看到在Makefile中使用if语句可以方便地进行条件判断,并根据不同的条件执行不同的命令。这样可以使我们的构建过程更...
⼀、参考⽂档：1. Test whether a directory exists inside a makefile https://stackoverflow.com/questions/20763629/test-whether-a-directory-exists-inside-a-makefile ⼆、解决办法：if a shell command, must be in one line, or be on multiple lines using a backslash for line extension.
https://stackoverflow.com/questions/20763629/test-whether-a-directory-exists-inside-a-makefile二、解决办法:ifa shell command, must beinone line, or be on multiple linesusinga backslashforline extension.
问生成文件中的If条件，在目标中EN我正在尝试设置一个Makefile，它将搜索和复制一些文件(if-else条件)...
Your branch is up-to-date with'origin/master'.Changes to be committed:(use"git reset HEAD <file>..."to unstage)newfile:.gitmodulesnewfile:DbConnector 1. 2. 3. 4. 5. 6. 7. 首先应当注意到新的.gitmodules $[submodule"DbConnector"]path=DbConnector ...
makefile ifeq ((wildcard config.h), ) #当config.h不存在时执行的命令 (info config.h doesn't exist. Creating one...) touch config.h else #当config.h存在时执行的命令 (info config.h already exists.) endif 在上述示例中,(wildcard ...)是一个内置函数,用于检查文件是否存在。当config.h不存...
Row Buffer Hits: The data looked for by the current instruction exists in the DRAM row buffer, which holds the element of the last access. Row Buffer Misses: The data looked for by the current instruction does not exist in the row buffer....
ifstream file; file.open("TehLeetFile");if(!file.is_open()) cout<<"Tehleetness is busted!";elsecout<<"it work!!!11!!!11!one!"; That's just checking to see if the file is there. Later on I will need to read the file...but not yet. Any...
/bin/bash3# testing compound comparisons4#5if[ -d $HOME ] && [ -w$HOME/testing ]6then7echo"The file exists and you can write to it"8else9echo"I cannot write to the file"10fi11$12$ ./test22.sh13I cannotwriteto thefile14$15$touch$HOME/testing16$17$ ./test22.sh18The...
releases can sometimes cause issues. Features that I or others add, will continue to be updated when you are on the most current release. If you DO NOT want OTA updates then create a file called "/data/no_ota_updates" and it will not perform OTA updates as long as that file exists....