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继续翻译 Once you've defined the rule to remake the `.d' files, you then usethe `include' directive to read them all in. *Note Include::. Forexample: sources = foo.c bar.c include $(sources:.c=.d)(This example uses a substitution variable reference to translate thelist of source files `foo.c 阅读全文
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继续翻译 Here is the pattern rule to generate a file of prerequisites (i.e.,a makefile) called `NAME.d' from a C source file called `NAME.c': %.d: %.c @set -e; rm -f $@; \ $(CC) -M $(CPPFLAGS) $< > $@.$$$$; \ sed 's,\($*\)\.o[ :]*,\1.o $@ : ,g' < $@.$$$$ > $@;... 阅读全文
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继续翻译 Note that such a prerequisite constitutes mentioning `main.o' in amakefile, so it can never be considered an intermediate file by implicitrule search. This means that `make' won't ever remove the file afterusing it; *note Chains of Implicit Rules: Chained Rules. With old `make' 阅读全文
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继续翻译4.14 Generating Prerequisites Automatically===========================================In the makefile for a program, many of the rules you need to write oftensay only that some object file depends on some header file. Forexample, if `main.c' uses `defs.h' via an `#include', you would 阅读全文
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继续翻译 The double-colon rules for a target are executed in the order theyappear in the makefile. However, the cases where double-colon rulesreally make sense are those where the order of executing the recipeswould not matter. Double-colon rules are somewhat obscure and not often very useful;they ... 阅读全文
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继续翻译4.13 Double-Colon Rules=======================Double-colon rules are explicit rules written with `::' instead of`:' after the target names. They are handled differently from ordinaryrules when the same target appears in more than one rule. Patternrules with double-colons have an entirely 阅读全文
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继续翻译4.12.2 Static Pattern Rules versus Implicit Rules-------------------------------------------------A static pattern rule has much in common with an implicit rule definedas a pattern rule (*note Defining and Redefining Pattern Rules: PatternRules.). Both have a pattern for the target and patterns. 阅读全文
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上例子LIBS=foo.k bar.k.PHONY : allall: $(LIBS) @echo final$(LIBS): %.k : text.g @echo $*text.g: echo text.g运行结果：text.gfoobarfinal结束 阅读全文
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继续翻译 Each target specified must match the target pattern; a warning isissued for each target that does not. If you have a list of files,only some of which will match the pattern, you can use the `filter'function to remove nonmatching file names (*note Functions for StringSubstitution and Analysi 阅读全文
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继续翻译 `%' characters in pattern rules can be quoted with precedingbackslashes (`\'). Backslashes that would otherwise quote `%'characters can be quoted with more backslashes. Backslashes that quote`%' characters or other backslashes are removed from the pattern beforeit is compared to 阅读全文