(autoconf.info)Backslash-Newline-Newline


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11.4 Backslash-Newline-Newline in Make Macro Values
===================================================

On some versions of HP-UX, `make' reads multiple newlines following a
backslash, continuing to the next non-empty line.  For example,

     FOO = one \

     BAR = two

     test:
             : FOO is "$(FOO)"
             : BAR is "$(BAR)"

shows `FOO' equal to `one BAR = two'.  Other implementations sensibly
let a backslash continue only to the immediately following line.


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