555win cung cấp cho bạn một cách thuận tiện, an toàn và đáng tin cậy [make it in germany blue card]
What you do is use a special feature of make, the automatic variables. These variables have values computed afresh for each rule that is executed, based on the target and prerequisites of the rule.
This appendix summarizes the directives, text manipulation functions, and special variables which GNU make understands. See Special Built-in Target Names, Catalogue of Built-In Rules, and Summary of Options, for other summaries.
Most often, the makefile tells make how to compile and link a program. In this chapter, we will discuss a simple makefile that describes how to compile and link a text editor which consists of eight C source files and three header files.
Variables in make can come from the environment in which make is run. Every environment variable that make sees when it starts up is transformed into a make variable with the same name and value.
26 thg 2, 2023 · This manual (make) is available in the following formats: HTML (1040K bytes) - entirely on one web page. HTML - with one web page per node. HTML compressed (212K gzipped characters) - entirely on one web page. HTML compressed (260K gzipped tar file) - with one web page per node. Info document (176K bytes gzipped tar file).
26 thg 2, 2023 · Most versions of Make will assume they must therefore recompile all the source files that use the header file; but GNU Make gives you a way to avoid the recompilation, in the case where you know your change to the header file does not require it.
26 thg 2, 2023 · If you say ‘make foo’, make will find GNUmakefile, read it, and see that to make foo, it needs to run the recipe ‘frobnicate > foo’. If you say ‘make bar’, make will find no way to make bar in GNUmakefile, so it will use the recipe from the pattern rule: ‘make -f Makefile bar’.
The following example of a conditional tells make to use one set of libraries if the CC variable is ‘ gcc ’, and a different set of libraries otherwise. It works by controlling which of two recipe lines will be used for the rule.
26 thg 2, 2023 · GNU make This file documents the GNU make utility, which determines automatically which pieces of a large program need to be recompiled, and issues the commands to recompile them. This is Edition 0.77, last updated 26 February 2023, of The GNU Make Manual, for GNU make version 4.4.1.
The value of the make variable VPATH specifies a list of directories that make should search. Most often, the directories are expected to contain prerequisite files that are not in the current directory; however, make uses VPATH as a search list for both prerequisites and targets of rules.
Bài viết được đề xuất: