AX_WARNING_DEFAULT_PKGCONFIGDIR [(dirvariable [,[defsetting][,[A][,[N/A]]]])]


AX_ENABLE_DEFAULT_PKGCONFIGDIR [(dirvariable [,defsetting])]
, 

2005-01-21

Guido U. Draheim <guidod@gmx.de>

GPLWithACException
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation. As a special exception, the respective Autoconf Macro's copyright owner gives unlimited permission to copy, distribute and modify the configure scripts that are the output of Autoconf when processing the Macro. You need not follow the terms of the GNU General Public License when using or distributing such scripts

guidod's Miscellaneous (released)

print a warning message if the $(datadir)/aclocal directory is not in the dirlist searched by the aclocal tool. This macro is useful if some `make install` would target $(datadir)/aclocal to install an autoconf m4 file of your project to be picked up by other projects.

default $1 dirvariable = pkgconfigdir
default $2 defsetting  = ${libdir}/pkgconfig
default $3 action = nothing to do
default $4 action = warn the user about mismatch

In the _WARNING_ variant, the defsetting is not placed in dirvariable nor is it ac_subst'ed in any way. The default fail-action $4 is to send a warning message to the user, and the default accept-action $3 is nothing. It is expected that a Makefile is generated with pkgconfigdir=${libdir}/pkgconfig

The _ENABLE_ variant however will set not only the $pkgconfigdir shell var of the script, but it is also AC-SUBST'ed on default - and furthermore a configure option "--enable-default-pkgconfigdir" is provided. Only if that option is set then $2 default is not set to the canonic default in the a $prefix subpath but instead $2 default is set to the primary path where `pkg-config` looks for .pc files. The user may also override the default on the command line.

AC_DEFUN([AX_WARNING_DEFAULT_PKGCONFIGDIR],[dnl
AC_REQUIRE([AX_EXPAND_PREFIX])dnl
AS_VAR_PUSHDEF([DIR],[ax_warning_default_pkgconfig_dir])dnl
AS_VAR_PUSHDEF([BIN],[ax_warning_default_pkgconfig_bin])dnl
AS_VAR_PUSHDEF([LOC],[ax_warning_default_pkgconfig_loc])dnl
LOC='m4_if([$2],,[${libdir}/pkgconfig],[$2])'
m4_ifval([$1],[test ".$[]$1" != "." && LOC="$[]$1"])
 if test ".$PKG_CONFIG" = "." ; then # we use the same default as in pkg.m4
    AC_PATH_PROG([PKG_CONFIG],[pkg-config],[no])
 fi
 if test "$PKG_CONFIG" = "no"
 then DIR="/" ; test -d "/usr/lib/pkgconfig" && DIR="/usr/lib/pkgconfig"
 else BIN=`AS_DIRNAME(["$DIR"])` ;
      if test -d "$BIN/lib/pkgconfig" ; then
          DIR="$BIN/lib/pkgconfig"
      else BIN=`AS_DIRNAME(["$DIR"])`
      if test -d "$BIN/lib/pkgconfig" ; then
          DIR="$BIN/lib/pkgconfig"
      else
      if test -d "/usr/lib/pkgconfig" ; then
          DIR="/usr/lib/pkgconfig"
      else
          DIR="/"
      fi fi fi
 fi
AC_RUN_LOG([: last pkgconfig dir is assumed as "$DIR"])
DIR=`eval "echo $DIR"`
DIR=`eval "echo $DIR"`
LOC=`eval "echo $LOC"`
LOC=`eval "echo $LOC"`
LOC=`eval "echo $LOC"`
LOC=`eval "echo $LOC"`
for DIR in `echo "$PKG_CONFIG_PATH:$DIR" | sed -e 's,:, ,g'` ; do
    AC_RUN_LOG([: test ".$LOC" = ".$DIR"])
    test ".$LOC" = ".$DIR" && break
done
if  test "$LOC" != "$DIR" ; then
        m4_ifval([$4],[$4],[dnl
 AC_MSG_NOTICE([warning: m4_if([$1],,[pkgconfigdir],[$1])=$LOC dnl
(see config.log)])
   AC_MSG_NOTICE([perhaps: make install m4_if([$1],,[pkgconfigdir],[$1])=$DIR])
   cat m4_ifset([AS_MESSAGE_LOG_FD],[>&AS_MESSAGE_LOG_FD],[>>config.log]) <<EOF
 pkgconfigdir:  the m4_if([$1],,[default pkgconfigdir],[$1 value]) of $LOC
 pkgconfigdir:  is not listed in the dirlist where pkg-config will look for
 pkgconfigdir:  package-configs - you can override the install-path using
 pkgconfigdir:  make install m4_if([$1],,[pkgconfigdir],[$1])=$DIR
 pkgconfigdir:  or set/append the directory to the environment variable
 pkgconfigdir:  PKG_CONFIG_PATH="$LOC"
EOF
   m4_ifvaln([$5],[$5])])dnl
   m4_ifvaln([$3],[else $3])dnl
fi
AS_VAR_POPDEF([LOC])dnl
AS_VAR_POPDEF([BIN])dnl
AS_VAR_POPDEF([DIR])dnl
])

AC_DEFUN([AX_ENABLE_DEFAULT_PKGCONFIGDIR],[dnl
AS_VAR_PUSHDEF([BIN],[ax_warning_default_pkgconfig_bin])dnl
AS_VAR_PUSHDEF([DIR],[ax_warning_default_pkgconfig_def])dnl
AS_VAR_PUSHDEF([DEF],[ax_warning_default_pkgconfig_def])dnl
AC_ARG_ENABLE([enable-default-pkgconfigdir],
[  --enable-default-pkgconfigdir(=PATH) override the libdir/pkgconfig default])
test ".$enable_default_pkgconfigdir" = "." && enable_default_pkgconfigdir="no"
case ".$enable_default_pkgconfigdir" in
  .no) DIR='m4_if([$2],,[${libdir}/pkgconfig],[$2])' ;;
  .yes) # autodetect
 if test ".$PKG_CONFIG" = "." ; then # we use the same default as in pkg.m4
    AC_PATH_PROG([PKG_CONFIG],[pkg-config],[no])
 fi
 if test "$PKG_CONFIG" = "no"
 then DIR="/tmp" ; test -d "/usr/lib/pkgconfig" && DIR="/usr/lib/pkgconfig"
 else BIN=`AS_DIRNAME(["$DIR"])` ;
      if test -d "$BIN/lib/pkgconfig" ; then
          DIR="$BIN/lib/pkgconfig"
      else BIN=`AS_DIRNAME(["$DIR"])`
      if test -d "$BIN/lib/pkgconfig" ; then
          DIR="$BIN/lib/pkgconfig"
      else
      if test -d "/usr/lib/pkgconfig" ; then
          DIR="/usr/lib/pkgconfig"
      else
          DIR="/tmp"
      fi fi fi
 fi ;;
  *) DIR="$enable_default_pkgconfigdir" ;;
esac
AX_WARNING_DEFAULT_PKGCONFIGDIR([$1],[$DEF],[$3],[$4],[$5])
m4_if([$1],,[pkgconfigdir],[$1])="$ax_warning_default_pkgconfig_dir"
AC_SUBST(m4_if([$1],,[pkgconfigdir],[$1]))
AS_VAR_POPDEF([DEF])dnl
AS_VAR_POPDEF([DIR])dnl
AS_VAR_POPDEF([BIN])dnl
])