How do you use a wildcard in makefile?
How do you use a wildcard in makefile?
If you want to do wildcard expansion in such places, you need to use the wildcard function, like this: $(wildcard pattern …) This string, used anywhere in a makefile, is replaced by a space-separated list of names of existing files that match one of the given file name patterns.
What is $@ $< in Makefile?
The $@ and $< are called automatic variables. The variable $@ represents the name of the target and $< represents the first prerequisite required to create the output file.
What is Notdir in makefile?
$(notdir names …) Extracts all but the directory-part of each file name in names . If the file name contains no slash, it is left unchanged. Otherwise, everything through the last slash is removed from it.
How do you give a wildcard?
The CHARLIST is enclosed in brackets ([ ]) and can be used with wildcard characters for more specific matches….Examples of wildcard character pattern matching in expressions.
| C haracter(s) | Use to match |
|---|---|
| ? or _ (underscore) | Any single character |
| * or % | Zero or more characters |
How do I run a makefile with a different name?
If you want to use a nonstandard name for your makefile, you can specify the makefile name with the ‘ -f ‘ or ‘ –file ‘ option. The arguments ‘ -f name ‘ or ‘ –file= name ‘ tell make to read the file name as the makefile. If you use more than one ‘ -f ‘ or ‘ –file ‘ option, you can specify several makefiles.
What is $$ in makefile?
$$ means be interpreted as a $ by the shell. the $(UNZIP_PATH) gets expanded by make before being interpreted by the shell.
What is Ldflags in makefile?
The make-specific variables (the ones in capital letters) follow a name convention such that: CC refers to the compiler (gcc in this case); CFLAGS contains compiler directives/options; and LDFLAGS is a list of link (or “load”) directives (here, instructions to link with the C math library).
How do I use IFEQ in makefile?
The ifeq directive begins the conditional, and specifies the condition. It contains two arguments, separated by a comma and surrounded by parentheses. Variable substitution is performed on both arguments and then they are compared.
What is Makecmdgoals?
MAKECMDGOALS. The targets given to make on the command line. Setting this variable has no effect on the operation of make.
How do you use wildcards in file names?
When you have a number of files named in series (for example, chap1 to chap12) or filenames with common characters (like aegis, aeon, and aerie), you can use wildcards (also called metacharacters) to specify many files at once. These special characters are * (asterisk),? (question mark), and [ ] (square brackets).
How do I add a wild card to a URL?
* (an asterisk) is a wildcard symbol that stands for any amount of letters or characters in your URL. This word starts with “d” and ends with “g”, but what comes in the middle could be any number of letters or characters. The word could start with any number of letters or characters as long as it ends with “og”.