Web2 nov. 2014 · Make doesn't have a find function. You have to use the shell function to run find. Also you should always use := not = for shell (and wildcard, for that matter) for performance reasons. And you should put spaces around assignments in make, just for clarity: SRC := $ (shell find src/ -maxdepth 1 -type f -regex ".*\.c") Web3 jul. 2009 · If file1 does not exist then $(wildcard file1) will evaluate to an empty string. ifeq ($(wildcard file1),) CLEAN_SRC = else CLEAN_SRC = *.h file3 endif Share. Improve ... Other parts of the makefile can be indented by spaces, or not at all -- make doesn't care there. – Colin D Bennett. Nov 8, 2013 at 21:21
利用Makefile给多文件、多目录C源码建立工程 - 知乎
Web27 okt. 2010 · I have a C++ library built using a Makefile. Until recently, all the sources were in a single directory, and the Makefile did something like this. SOURCES = $ (wildcard … Web可以看到，在makefile第二行， main 的依赖文件为$ {OBJ},即 foo.o 和 bar.o ,make在当前目录中并没有找到这两个文件，所以就需要寻找生成这两个依赖文件的规则。 第四行就是生成 foo.o 和 bar.o 的规则，所以需要先被执行，这一行使用了静态模式规则，对于存在于$ {OBJ}中的每个.o文件，使用对应的.c文件作为依赖，调用命令部分，而命令就是生成.o … reading first grade books
Makefile实现子目录编译 - CSDN博客
Web2 Answers Sorted by: 28 The construct: %.o: %.c $ (CC) -c $^ -o $@ is a pattern rule, which is a type of implicit rule. It specifies one target and one dependency, and causes one invocation of $ (CC) for each target. While this: SOURCE := $ (wildcard *.c) $ (SOURCE:.c=.o): $ (SOURCE) $ (CC) -c $^ -o $@ Webwildcard 会列举出当前目录下所有的.c文件 所以第6步最终就是将子目录下的所有的.c文件，编译生成对应文件名的.o文件 $ (CC) $ (CFLAGS) -o $ (Target) $ (AllObjs) $ (Libs) 这 … Web20 dec. 2024 · Makefile 里的函数跟它的变量很相似——使用的时候，你用一个 符号跟左圆括号，函数名，空格后跟一列由逗号分隔的参数，最后用右圆括号结束。 例如，在GNUMake里有一个叫′wildcard′的函数，它有一个参数，功能是展开成一列所有符合由其参数描述的文件名，文件间以空格间隔。 像这个命令：objects =符号跟左圆括号，函数 … reading fixed width file in python