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8a805a0636
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2 changed files with 18 additions and 4 deletions
6
02.variables/.gitignore
vendored
6
02.variables/.gitignore
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@ -1,4 +1,2 @@
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/file1
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# ignore all generated file by the makefile (we prefix them with file...)
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/file2
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/file*
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/file3
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/file4
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@ -6,8 +6,11 @@ VAR2=asdas agu
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VAR3=asdas agu
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VAR3=asdas agu
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# according to https://stackoverflow.com/a/649255/1711186 it is not possible to
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# according to https://stackoverflow.com/a/649255/1711186 it is not possible to
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# have newlines being part of a Makefile variable
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# have newlines being part of a Makefile variable
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# CORRECTION there should be indeed a wat to have "newlines" be stored in a
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# makefile variable see GNU make docu https://www.gnu.org/software/make/manual/html_node/Multi_002dLine.html
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VAR4='asdas \
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VAR4='asdas \
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agu'
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agu'
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FILE:=file
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all: file1 file2 file3 file4
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all: file1 file2 file3 file4
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@ -22,3 +25,16 @@ file3:
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file4:
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file4:
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echo "$(VAR4)" > $@
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echo "$(VAR4)" > $@
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# Variables can be used for the target of recepies
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$(FILE)-li:
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touch $@
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# bottom line the use of variables might feel a bit annoying in
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# paritcular for the bash/shell programmers as it uses the same
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# "$" indicator but then oftentime $(VARNAME)
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# it is possible to use ${VARNAME},
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# as a "price" the use of $ in the "recipe" part of a rule the us of shell variabls requires
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# to use $$SHELVAR
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