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Makefiel tempaltes

#Automatic Variables

• $@
• The filename representing the target.
• $%
• The filename element of an archive member specification.
• $<
• The filename of the first prerequisite
• $?
• The names of all prerequisites that are newer than the target, separated by spaces.
• $^
• The filenames of all the prerequisites, separated by spaces. This list has duplicate filenames removed since for most uses, such as compiling, copying, etc., duplicates are not wanted.
• $+
• Similar to $^, this is the names of all the prerequisites separated by spaces, except that $+ includes duplicates. This variable was created for specific situations such as arguments to linkers where duplicate values have meaning.
• $*
• The stem of the target filename. A stem is typically a filename without its suffix. Its use outside of pattern rules is discouraged.