PolarDB-for-PostgreSQL

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#! /bin/sh
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# This script prepares a PostgreSQL build tree.  It is intended
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# to be run by the configure script.
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me=`basename $0`
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help="\
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Usage: $me sourcetree [buildtree]"
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if test -z "$1"; then
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    echo "$help" 1>&2
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    exit 1
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elif test x"$1" = x"--help"; then
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    echo "$help"
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    exit 0
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fi
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unset CDPATH
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sourcetree=`cd $1 && pwd`
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buildtree=`cd ${2:-'.'} && pwd`
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# We must not auto-create the subdirectories holding built documentation.
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# If we did, it would interfere with installation of prebuilt docs from
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# the source tree, if a VPATH build is done from a distribution tarball.
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# See bug #5595.
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for item in `find "$sourcetree" -type d \( \( -name CVS -prune \) -o \( -name .git -prune \) -o -print \) | grep -v "$sourcetree/doc/src/sgml/\+"`; do
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    subdir=`expr "$item" : "$sourcetree\(.*\)"`
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    if test ! -d "$buildtree/$subdir"; then
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        mkdir -p "$buildtree/$subdir" || exit 1
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    fi
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done
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for item in `find "$sourcetree" -name Makefile -print -o -name GNUmakefile -print`; do
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    filename=`expr "$item" : "$sourcetree\(.*\)"`
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    if test ! -f "${item}.in"; then
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        if cmp "$item" "$buildtree/$filename" >/dev/null 2>&1; then : ; else
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            ln -fs "$item" "$buildtree/$filename" || exit 1
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        fi
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    fi
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done
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exit 0
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