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Adjust comments about what's needed to avoid make 3.80 bug.

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... based on further tracing through that code.
This commit is contained in:
Tom Lane
2010-11-15 01:00:48 -05:00
parent 5ccbc3d802
commit 357edc9a99
1 changed files with 4 additions and 3 deletions
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7
src/Makefile.global.in
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@ -559,9 +559,10 @@ endif
# This function is only for internal use below. It should be called # This function is only for internal use below. It should be called
# using $(eval). It will set up a target so that it recurses into # using $(eval). It will set up a target so that it recurses into
# a given subdirectory. Note that to avoid a nasty bug in make 3.80, # a given subdirectory. Note that to avoid a nasty bug in make 3.80,
# it is important that the expansion of this function not exceed about # this function has to avoid using any complicated constructs (like
# 200 bytes. This is why we make it apply to just one subdirectory at a # multiple targets on a line) and also not contain any lines that expand
# time, rather than to a list of subdirectories. # to more than about 200 bytes. This is why we make it apply to just one
# subdirectory at a time, rather than to a list of subdirectories.
# $1: target name, e.g., all # $1: target name, e.g., all
# $2: subdir name # $2: subdir name
# $3: target to run in subdir, usually same as $1 # $3: target to run in subdir, usually same as $1