add missing files

1 files changed, 247 insertions, 0 deletions

diff --git a/m4/ax_lib_postgresql.m4 b/m4/ax_lib_postgresql.m4
new file mode 100644
index 0000000..cc8e750
--- /dev/null
+++ b/m4/ax_lib_postgresql.m4
@@ -0,0 +1,247 @@
+# ===========================================================================
+#    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])])
+
+])