Macro: ac_set_default_paths_system

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# ac_set_default_paths_system

## Synopsis

`AC_SET_DEFAULT_PATHS_SYSTEM`

## Version

1.4 (2001/08/25) guidod @ ac-archive-0.5.32

## Author

Guido Draheim <guidod@gmx.de> STATUS: one time use

## Description

the most interesting changes go about windows-targets - where the default_prefix is set to /programs, and quite some directories are aliased: sbindir := libdir := bindir and the docprefix-defaults are also a bit different, even on FHS2-compliant systems where the mandir is going to $prefix/man only if prefix=/usr, otherwise they shall go to $datadir/man. We use an extra docprefix to express it which is either defined as being prefix or datadir. not SUBSTed here.

## M4 Source Code

    AC_DEFUN([AC_SET_DEFAULT_PATHS_SYSTEM],
    [AC_REQUIRE([AC_CANONICAL_HOST]) # --------------------------------------------
    case "$prefix:$ac_default_prefix" in
      NONE:/usr/local)
        result=""
        AC_MSG_CHECKING(default prefix path)
        case "${target_os}" in
          *cygwin* | *mingw* | *uwin* | *djgpp | *emx* )
    	if test "${host_os}" = "${target_os}" ; then
               ac_default_prefix="/programs"
               result="(win/dos target)"
            else
               case "$PATH" in
                  *:/usr/local/cross-tools/$target_alias/bin:*)
    	          ac_default_prefix="/usr/local/cross-tools/$target_alias" ;;
                  *:/usr/local/$target_alias/bin:*)
    	          ac_default_prefix="/usr/local/$target_alias" ;;
                  *:/usr/local/$target_cpu-$target_os/bin:*)
    	          ac_default_prefix="/usr/local/$target_cpu-$target_os" ;;
                  *)
                      ac_default_prefix="/programs" ;;
               esac
               result="(win/dos cross-compiler)"
            fi
        ;;
        esac
        AC_MSG_RESULT($ac_default_prefix $result)
      ;;
    esac
    AC_MSG_CHECKING(default prefix system)
    result="$prefix" ; test "$result" = "NONE" && result="$ac_default_prefix"
    case ${result} in
      /programs | /programs/*) result="is win-/programs"
         # on win/dos, .exe .dll and .cfg live in the same directory
         libdir=`echo $libdir |sed -e 's:^..exec_prefix./lib$:${bindir}:'`
         sbindir=`echo $sbindir |sed -e 's:^..exec_prefix./sbin$:${libdir}:'`
         sysconfdir=`echo $sysconfdir |sed -e 's:^..prefix./etc$:${sbindir}:'`
         libexecdir=`echo $libexecdir |sed -e 's:/libexec$:/system:'`
         # help-files shall be set with --infodir, docprefix is datadir
         docprefix="${datadir}"
         mandir=`echo $mandir \
    	                     |sed -e 's:^..prefix./man$:${datadir}/info:'`
         includedir=`echo $includedir \
                    |sed -e 's:^..prefix./include$:${datadir}/include:'`
         # other state files (but /etc) are moved to datadir
         sharedstatedir=`echo $sharedstatedir \
                         |sed -e 's:^..prefix./com$:${datadir}/default:'`
         localstatedir=`echo $localstatedir \
                         |sed -e 's:^..prefix./var$:${datadir}/current:'`
      ;;
      /usr) result="is /usr-shipped"
         # doc files are left at prefix
         docprefix="${prefix}"
         # state files go under /top
         sysconfdir=`echo $sysconfdir |sed -e 's:^..prefix./etc$:/etc:'`
         sharedstatedir=`echo $sharedstatedir \
                         |sed -e 's:^..prefix./com$:/etc/default:'`
         # $prefix/var is going to end up in /var/lib
         localstatedir=`echo $localstatedir \
                         |sed -e 's:^..prefix./var$:/var/lib:'`
      ;;
      /opt | /opt/*) result="is /opt-package"
         # state files go under /top/prefix
         sysconfdir=`echo $sysconfdir \
                         |sed -e 's:^..prefix./etc$:/etc${prefix}:'`
         sharedstatedir=`echo $sharedstatedir \
                         |sed -e 's:^..prefix./com$:/etc/default${prefix}:'`
         # $prefix/var is going to to be /var$prefix... once again
         localstatedir=`echo $localstatedir \
                         |sed -e 's:^..prefix./var$:/var${prefix}:'`
         # doc files are left at prefix
         docprefix="${prefix}"
      ;;
      *) result="is /local-package"
         # doc files are moved from prefix down to datadir
         docprefix="${datadir}"
         mandir=`echo $mandir \
                         |sed -e 's:^..prefix./man$:${datadir}/man:'`
         infodir=`echo $infodir \
                         |sed -e 's:^..prefix./infodir$:${datadir}/info:'`
         # never use $prefix/com - that is no good idea
         sharedstatedir=`echo $sharedstatedir \
                         |sed -e 's:^..prefix./com$:${sysconfdir}/default:'`
      ;;
    esac
    AC_MSG_RESULT($result)
    # --------------------------------------------------------
    ])