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.
1、判断文件夹是否存在 //spath:文件夹路径名 using System.IO; if (Directory.Exists(spath)) { } else { DirectoryInfo...directoryInfo = new DirectoryInfo(spath); directoryInfo.Create(); } 2、判断文件是否存在 // filePath 文件路径名 1.6K10 ...
"@echo$(bar) if函数 if检查第一个参数是否为非空。如果是,则运行第二个参数,否则运行第三个。 foo :=$(ifthis-is-not-empty,then!,else!)empty := bar :=$(if$(empty),then!,else!)all:@echo
master Documentation LICENSES arch block certs crypto drivers fs include init io_uring ipc kernel lib mm net rust samples scripts security sound tools usr virt .clang-format .cocciconfig .editorconfig .get_maintainer.ignore .gitattributes .gitignore ...
test/maintainer/check_spaces.pl . # For tests that might use it, set $REF_PATH explicitly to use only reference # areas within the test suite (or set it to ':' to use no reference areas). # # If using MSYS, avoid poor shell expansion via: # MSYS2_ARG_CONV_EXCL="*" make...
test -d .git;then\231echoNo .git directory, is this a git repository?; \232false; \233fi234@if test"$$(git symbolic-ref HEAD)"!= refs/heads/lab$(LAB);then\235git branch; \236read -p"You are not on the lab$(LAB) branch. Hand-in the current branch? [y/N]...
Makefile是一种用于自动化构建和管理软件项目的工具。它通常包含了一系列规则和命令,用于指导编译器和链接器生成可执行文件或库文件。 在Makefile中,可以通过指定输出路径来将生成的文件输出到...
Check if a variable is defined ifdef does not expand variable references; it just sees if something is defined at all bar = foo =$(bar)all:ifdeffoo echo"foo is defined"endififndefbar echo"but bar is not"endif $(MAKEFLAGS) This example shows you how to test make flags withfindstringan...
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if test ! -d $(DESTDIR)$$i; then \ echo "Creating directory $$i"; \ $(INSTALL) -d -m $(DIRMODE) $(DESTDIR)$$i; \ else true; \ fi; \ done # Install the interpreter with $(VERSION) affixed # This goes into $(exec_prefix) altbininstall: $(BUILDPYTHON) @FRAM...