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# ===========================================================================
# https://www.gnu.org/software/autoconf-archive/ax_lib_postgresql.html
# ===========================================================================
#
# SYNOPSIS
#
# AX_LIB_POSTGRESQL([MINIMUM-VERSION],[ACTION-IF-FOUND],[ACTION-IF-NOT-FOUND])
#
# DESCRIPTION
#
# This macro provides tests of availability of PostgreSQL 'libpq' library
# of particular version or newer.
#
# 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.
#
# The --with-postgresql option takes one of three possible values:
#
# no - do not check for PostgreSQL client library
#
# yes - do check for PostgreSQL library in standard locations (pg_config
# should be in the PATH)
#
# path - complete path to pg_config utility, use this option if pg_config
# can't be found in the PATH (You could set also PG_CONFIG variable)
#
# This macro calls:
#
# AC_SUBST(POSTGRESQL_CPPFLAGS)
# AC_SUBST(POSTGRESQL_LDFLAGS)
# AC_SUBST(POSTGRESQL_LIBS)
# AC_SUBST(POSTGRESQL_VERSION)
#
# And sets:
#
# HAVE_POSTGRESQL
#
# It execute if found ACTION-IF-FOUND (empty by default) and
# ACTION-IF-NOT-FOUND (AC_MSG_FAILURE by default) if not found.
#
# LICENSE
#
# Copyright (c) 2008 Mateusz Loskot <mateusz@loskot.net>
# Copyright (c) 2014 Sree Harsha Totakura <sreeharsha@totakura.in>
# Copyright (c) 2018 Bastien Roucaries <rouca@debian.org>
#
# 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. This file is offered as-is, without any
# warranty.
#serial 22
AC_DEFUN([_AX_LIB_POSTGRESQL_OLD],[
found_postgresql="no"
_AX_LIB_POSTGRESQL_OLD_fail="no"
while true; do
AC_CACHE_CHECK([for the pg_config program], [ac_cv_path_PG_CONFIG],
[AC_PATH_PROGS_FEATURE_CHECK([PG_CONFIG], [pg_config],
[[ac_cv_path_PG_CONFIG="";$ac_path_PG_CONFIG --includedir > /dev/null \
&& ac_cv_path_PG_CONFIG=$ac_path_PG_CONFIG ac_path_PG_CONFIG_found=:]],
[ac_cv_path_PG_CONFIG=""])])
PG_CONFIG=$ac_cv_path_PG_CONFIG
AS_IF([test "X$PG_CONFIG" = "X"],[break])
AC_CACHE_CHECK([for the PostgreSQL libraries CPPFLAGS],[ac_cv_POSTGRESQL_CPPFLAGS],
[ac_cv_POSTGRESQL_CPPFLAGS="-I`$PG_CONFIG --includedir`" || _AX_LIB_POSTGRESQL_OLD_fail=yes])
AS_IF([test "X$_AX_LIB_POSTGRESQL_OLD_fail" = "Xyes"],[break])
POSTGRESQL_CPPFLAGS="$ac_cv_POSTGRESQL_CPPFLAGS"
AC_CACHE_CHECK([for the PostgreSQL libraries LDFLAGS],[ac_cv_POSTGRESQL_LDFLAGS],
[ac_cv_POSTGRESQL_LDFLAGS="-L`$PG_CONFIG --libdir`" || _AX_LIB_POSTGRESQL_OLD_fail=yes])
AS_IF([test "X$_AX_LIB_POSTGRESQL_OLD_fail" = "Xyes"],[break])
POSTGRESQL_LDFLAGS="$ac_cv_POSTGRESQL_LDFLAGS"
AC_CACHE_CHECK([for the PostgreSQL libraries LIBS],[ac_cv_POSTGRESQL_LIBS],
[ac_cv_POSTGRESQL_LIBS="-lpq"])
POSTGRESQL_LIBS="$ac_cv_POSTGRESQL_LIBS"
AC_CACHE_CHECK([for the PostgreSQL version],[ac_cv_POSTGRESQL_VERSION],
[
ac_cv_POSTGRESQL_VERSION=`$PG_CONFIG --version | sed "s/^PostgreSQL[[[:space:]]][[[:space:]]]*\([[0-9.]][[0-9.]]*\).*/\1/"` \
|| _AX_LIB_POSTGRESQL_OLD_fail=yes
])
AS_IF([test "X$_AX_LIB_POSTGRESQL_OLD_fail" = "Xyes"],[break])
POSTGRESQL_VERSION="$ac_cv_POSTGRESQL_VERSION"
dnl
dnl Check if required version of PostgreSQL is available
dnl
AS_IF([test X"$postgresql_version_req" != "X"],[
AC_MSG_CHECKING([if PostgreSQL version $POSTGRESQL_VERSION is >= $postgresql_version_req])
AX_COMPARE_VERSION([$POSTGRESQL_VERSION],[ge],[$postgresql_version_req],
[found_postgresql_req_version=yes],[found_postgresql_req_version=no])
AC_MSG_RESULT([$found_postgresql_req_version])
])
AS_IF([test "Xfound_postgresql_req_version" = "Xno"],[break])
found_postgresql="yes"
break
done
])
AC_DEFUN([_AX_LIB_POSTGRESQL_PKG_CONFIG],
[
AC_REQUIRE([PKG_PROG_PKG_CONFIG])
found_postgresql=no
while true; do
PKG_PROG_PKG_CONFIG
AS_IF([test X$PKG_CONFIG = X],[break])
_AX_LIB_POSTGRESQL_PKG_CONFIG_fail=no;
AS_IF([test "X$postgresql_version_req" = "X"],
[PKG_CHECK_EXISTS([libpq],[found_postgresql_pkg_config=yes],[found_postgresql=no])],
[PKG_CHECK_EXISTS([libpq >= "$postgresql_version_req"],
[found_postgresql=yes],[found_postgresql=no])])
AS_IF([test "X$found_postgresql" = "no"],[break])
AC_CACHE_CHECK([for the PostgreSQL libraries CPPFLAGS],[ac_cv_POSTGRESQL_CPPFLAGS],
[ac_cv_POSTGRESQL_CPPFLAGS="`$PKG_CONFIG libpq --cflags-only-I`" || _AX_LIB_POSTGRESQL_PKG_CONFIG_fail=yes])
AS_IF([test "X$_AX_LIB_POSTGRESQL_PKG_CONFIG_fail" = "Xyes"],[break])
POSTGRESQL_CPPFLAGS="$ac_cv_POSTGRESQL_CPPFLAGS"
AC_CACHE_CHECK([for the PostgreSQL libraries LDFLAGS],[ac_cv_POSTGRESQL_LDFLAGS],
[ac_cv_POSTGRESQL_LDFLAGS="`$PKG_CONFIG libpq --libs-only-L --libs-only-other`" || _AX_LIB_POSTGRESQL_PKG_CONFIG_fail=yes])
AS_IF([test "X$_AX_LIB_POSTGRESQL_PKG_CONFIG_fail" = "Xyes"],[break])
POSTGRESQL_LDFLAGS="$ac_cv_POSTGRESQL_LDFLAGS"
AC_CACHE_CHECK([for the PostgreSQL libraries LIBS],[ac_cv_POSTGRESQL_LIBS],
[ac_cv_POSTGRESQL_LIBS="`$PKG_CONFIG libpq --libs-only-l`" || _AX_LIB_POSTGRESQL_PKG_CONFIG_fail=ye])
AS_IF([test "X$_AX_LIB_POSTGRESQL_PKG_CONFIG_fail" = "Xyes"],[break])
POSTGRESQL_LIBS="$ac_cv_POSTGRESQL_LIBS"
dnl already checked by exist but need to be recovered
AC_CACHE_CHECK([for the PostgreSQL version],[ac_cv_POSTGRESQL_VERSION],
[ac_cv_POSTGRESQL_VERSION="`$PKG_CONFIG libpq --modversion`" || _AX_LIB_POSTGRESQL_PKG_CONFIG_fail=yes])
AS_IF([test "X$_AX_LIB_POSTGRESQL_PKG_CONFIG_fail" = "Xyes"],[break])
POSTGRESQL_VERSION="$ac_cv_POSTGRESQL_VERSION"
found_postgresql=yes
break;
done
])
AC_DEFUN([AX_LIB_POSTGRESQL],
[
AC_ARG_WITH([postgresql],
AS_HELP_STRING([--with-postgresql=@<:@ARG@:>@],
[use PostgreSQL library @<:@default=yes@:>@, optionally specify path to pg_config]
),
[
AS_CASE([$withval],
[[[nN]][[oO]]],[want_postgresql="no"],
[[[yY]][[eE]][[sS]]],[want_postgresql="yes"],
[
want_postgresql="yes"
PG_CONFIG="$withval"
])
],
[want_postgresql="yes"]
)
AC_ARG_VAR([POSTGRESQL_CPPFLAGS],[cpp flags for PostgreSQL overriding detected flags])
AC_ARG_VAR([POSTGRESQL_LIBFLAGS],[libs for PostgreSQL overriding detected flags])
AC_ARG_VAR([POSTGRESQL_LDFLAGS],[linker flags for PostgreSQL overriding detected flags])
# populate cache
AS_IF([test "X$POSTGRESQL_CPPFLAGS" != X],[ac_cv_POSTGRESQL_CPPFLAGS="$POSTGRESQL_CPPFLAGS"])
AS_IF([test "X$POSTGRESQL_LDFLAGS" != X],[ac_cv_POSTGRESQL_LDFLAGS="$POSTGRESQL_LDFLAGS"])
AS_IF([test "X$POSTGRESQL_LIBS" != X],[ac_cv_POSTGRESQL_LIBS="$POSTGRESQL_LIBS"])
postgresql_version_req=ifelse([$1], [], [], [$1])
found_postgresql="no"
POSTGRESQL_VERSION=""
dnl
dnl Check PostgreSQL libraries (libpq)
dnl
AS_IF([test X"$want_postgresql" = "Xyes"],[
_AX_LIB_POSTGRESQL_PKG_CONFIG
AS_IF([test X"$found_postgresql" = "Xno"],
[_AX_LIB_POSTGRESQL_OLD])
AS_IF([test X"$found_postgresql" = Xyes],[
_AX_LIB_POSTGRESQL_OLD_CPPFLAGS="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS $POSTGRESQL_CPPFLAGS"
_AX_LIB_POSTGRESQL_OLD_LDFLAGS="$LDFLAGS"
LDFLAGS="$LDFLAGS $POSTGRESQL_LDFLAGS"
_AX_LIB_POSTGRESQL_OLD_LIBS="$LIBS"
LIBS="$LIBS $POSTGRESQL_LIBS"
while true; do
dnl try to compile
AC_CHECK_HEADER([libpq-fe.h],[],[found_postgresql=no])
AS_IF([test "X$found_postgresql" = "Xno"],[break])
dnl try now to link
AC_CACHE_CHECK([for the PostgreSQL library linking is working],[ac_cv_postgresql_found],
[
AC_LINK_IFELSE([
AC_LANG_PROGRAM(
[
#include <libpq-fe.h>
],
[[
char conninfo[]="dbname = postgres";
PGconn *conn;
conn = PQconnectdb(conninfo);
]]
)
],[ac_cv_postgresql_found=yes],
[ac_cv_postgresql_found=no])
])
found_postgresql="$ac_cv_postgresql_found"
AS_IF([test "X$found_postgresql" = "Xno"],[break])
break
done
CPPFLAGS="$_AX_LIB_POSTGRESQL_OLD_CPPFLAGS"
LDFLAGS="$_AX_LIB_POSTGRESQL_OLD_LDFLAGS"
LIBS="$_AX_LIB_POSTGRESQL_OLD_LIBS"
])
AS_IF([test "x$found_postgresql" = "xyes"],[
AC_DEFINE([HAVE_POSTGRESQL], [1],
[Define to 1 if PostgreSQL libraries are available])])
])
AC_SUBST([POSTGRESQL_VERSION])
AC_SUBST([POSTGRESQL_CPPFLAGS])
AC_SUBST([POSTGRESQL_LDFLAGS])
AC_SUBST([POSTGRESQL_LIBS])
AS_IF([test "x$found_postgresql" = "xyes"],
[ifelse([$2], , :, [$2])],
[ifelse([$3], , AS_IF([test X"$want_postgresql" = "Xyes"],[AC_MSG_ERROR([Library requirements (PostgreSQL) not met.])],[:]), [$3])])
])
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