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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"
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Autoconf Macro: ax_lib_postgresql
</title>
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<hr>
<h1>
ax_lib_postgresql
</h1>
<h2>
Synopsis
</h2>
<p class="indent" style="white-space:nowrap;">
<code>AX_LIB_POSTGRESQL([MINIMUM-VERSION])</code>
</p>
<h2>
Description
</h2>
<div class="indent">
<p>
This macro provides tests of availability of PostgreSQL 'libpq' library of
particular version or newer.
</p>
<p>
AX_LIB_POSTGRESQL macro takes only one argument which is optional. If there
is no required version passed, then macro does not run version test.
</p>
<p>
The --with-postgresql option takes one of three possible values:
</p>
<p>
no - do not check for PostgreSQL client library
</p>
<p>
yes - do check for PostgreSQL library in standard locations (pg_config
should be in the PATH)
</p>
<p>
path - complete path to pg_config utility, use this option if pg_config
can't be found in the PATH
</p>
<p>
This macro calls:
</p>
<pre>
AC_SUBST(POSTGRESQL_CFLAGS)
AC_SUBST(POSTGRESQL_LDFLAGS)
AC_SUBST(POSTGRESQL_VERSION)
</pre>
<p>
And sets:
</p>
<pre>
HAVE_POSTGRESQL
</pre>
</div>
<h2>
Author
</h2>
<p class="indent">
Mateusz Loskot <mateusz@loskot.net>
</p>
<h2>
Last Modified
</h2>
<p class="indent">
2006-07-16
</p>
<h2>
M4 Source Code
</h2>
<div class="indent">
<pre class="m4source">
AC_DEFUN([AX_LIB_POSTGRESQL],
[
AC_ARG_WITH([postgresql],
AC_HELP_STRING([--with-postgresql=@<:@ARG@:>@],
[use PostgreSQL library @<:@default=yes@:>@, optionally specify path to pg_config]
),
[
if test "$withval" = "no"; then
want_postgresql="no"
elif test "$withval" = "yes"; then
want_postgresql="yes"
else
want_postgresql="yes"
PG_CONFIG="$withval"
fi
],
[want_postgresql="yes"]
)
POSTGRESQL_CFLAGS=""
POSTGRESQL_LDFLAGS=""
POSTGRESQL_POSTGRESQL=""
dnl
dnl Check PostgreSQL libraries (libpq)
dnl
if test "$want_postgresql" = "yes"; then
if test -z "$PG_CONFIG" -o test; then
AC_PATH_PROG([PG_CONFIG], [pg_config], [no])
fi
if test "$PG_CONFIG" != "no"; then
AC_MSG_CHECKING([for PostgreSQL libraries])
POSTGRESQL_CFLAGS="-I`$PG_CONFIG --includedir`"
POSTGRESQL_LDFLAGS="-L`$PG_CONFIG --libdir` -lpq"
POSTGRESQL_VERSION=`$PG_CONFIG --version | sed -e 's#PostgreSQL ##'`
AC_DEFINE([HAVE_POSTGRESQL], [1],
[Define to 1 if PostgreSQL libraries are available])
found_postgresql="yes"
AC_MSG_RESULT([yes])
else
found_postgresql="no"
AC_MSG_RESULT([no])
fi
fi
dnl
dnl Check if required version of PostgreSQL is available
dnl
postgresql_version_req=ifelse([$1], [], [], [$1])
if test "$found_postgresql" = "yes" -a -n "$postgresql_version_req"; then
AC_MSG_CHECKING([if PostgreSQL version is >= $postgresql_version_req])
dnl Decompose required version string of PostgreSQL
dnl and calculate its number representation
postgresql_version_req_major=`expr $postgresql_version_req : '\([[0-9]]*\)'`
postgresql_version_req_minor=`expr $postgresql_version_req : '[[0-9]]*\.\([[0-9]]*\)'`
postgresql_version_req_micro=`expr $postgresql_version_req : '[[0-9]]*\.[[0-9]]*\.\([[0-9]]*\)'`
if test "x$postgresql_version_req_micro" = "x"; then
postgresql_version_req_micro="0"
fi
postgresql_version_req_number=`expr $postgresql_version_req_major \* 1000000 \
\+ $postgresql_version_req_minor \* 1000 \
\+ $postgresql_version_req_micro`
dnl Decompose version string of installed PostgreSQL
dnl and calculate its number representation
postgresql_version_major=`expr $POSTGRESQL_VERSION : '\([[0-9]]*\)'`
postgresql_version_minor=`expr $POSTGRESQL_VERSION : '[[0-9]]*\.\([[0-9]]*\)'`
postgresql_version_micro=`expr $POSTGRESQL_VERSION : '[[0-9]]*\.[[0-9]]*\.\([[0-9]]*\)'`
if test "x$postgresql_version_micro" = "x"; then
postgresql_version_micro="0"
fi
postgresql_version_number=`expr $postgresql_version_major \* 1000000 \
\+ $postgresql_version_minor \* 1000 \
\+ $postgresql_version_micro`
postgresql_version_check=`expr $postgresql_version_number \>\= $postgresql_version_req_number`
if test "$postgresql_version_check" = "1"; then
AC_MSG_RESULT([yes])
else
AC_MSG_RESULT([no])
fi
fi
AC_SUBST([POSTGRESQL_VERSION])
AC_SUBST([POSTGRESQL_CFLAGS])
AC_SUBST([POSTGRESQL_LDFLAGS])
])
</pre>
</div>
<h2>
License
</h2>
<div class="indent">
<span style="white-space:nowrap;">Copyright © 2006 Mateusz Loskot
<mateusz@loskot.net></span>
<p>
Copying and distribution of this file, with or without modification, are
permitted in any medium without royalty provided the copyright notice and
this notice are preserved.
</p>
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