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Questions - gnu-make

does gmake automatically define $(INSTALL)?

gmake doesn't seem to have a value for $(INSTALL). is this supposed to be defined by the user? $(CC) works fine. most sample Makefiles i went over didn't have an explicit definition of $(INSTALL)... i...
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kevinnls

gnu-make

Votes: 0

Answers: 1

Latest Answer

There is no default value defined for INSTALL. You can see all the default rules and variables by running: make -p -f/dev/null Whether install or cp is a better fit depends entirely on your use-case...
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MadScientist

Multiple using of % pattern within the same target rule in Makefile

Let's say there are a number of rules like this: prefix/FOO/FOO_suffix/FOO.txt: prefix/FOO/FOO_input.txt echo @< prefix/BAR/BAR_suffix/BAR.txt: prefix/BAR/BAR_input.txt echo @< Instead ...
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GrAnd

makefile

gnu-make

Votes: 0

Answers: 1

Latest Answer

GNU make's secondary expansion can sometimes be used instead of foreach-eval-call: .SECONDEXPANSION: prefix/%.txt: prefix/$$(notdir $$*)/$$(notdir $$*)_input.txt @echo '$<' Demo: $ make prefi...
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Renaud Pacalet

How to create a makefile to sort all the .txt files in the directory and save it as .sorted using makefile?

How to create a makefile to sort all the .txt files in the directory and save it as .sorted using makefile? %.sorted: %.txt sort $< -o $@ all: (*.sorted) default:all
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Guru Third

makefile

gnu-make

Votes: 0

Answers: 1

Latest Answer

(*.sorted) is just looking for a file with that literal name. You probably want all: $(patsubst %.txt,%.sorted,$(wildcard *.txt)) %.sorted: %.txt sort $< -o $@ The $(wildcard *.txt) generates...
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tripleee

Make refuses to expand my variables in the g++ compilation line

Here is my simple Makefile. I am trying to set the C macro "GIT_COMMIT" in my Makefile and pass it to the C program. all: control control: control.cpp serial_port.cpp GIT_COMMIT=5 g...
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define_makefile

makefile

gnu-make

Votes: 0

Answers: 1

Latest Answer

placing the setting of GIT_COMMIT as an action inside the 'control' rule will, as you discovered, not work to produce a macro. suggest: all: control GIT_COMMIT := 5 control: control.cpp serial_port...
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user3629249

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