# lib-prefix.m4 serial 5 (gettext-0.15)

dnl Copyright (C) 2001-2005 Free Software Foundation, Inc.

dnl This file is free software; the Free Software Foundation

dnl gives unlimited permission to copy and/or distribute it,

dnl with or without modifications, as long as this notice is preserved.

dnl From Bruno Haible.

dnl AC_LIB_ARG_WITH is synonymous to AC_ARG_WITH in autoconf-2.13, and

dnl similar to AC_ARG_WITH in autoconf 2.52...2.57 except that is doesn't

dnl require excessive bracketing.

ifdef([AC_HELP_STRING],

[AC_DEFUN([AC_LIB_ARG_WITH], [AC_ARG_WITH([$1],[[$2]],[$3],[$4])])],

[AC_DEFUN([AC_][LIB_ARG_WITH], [AC_ARG_WITH([$1],[$2],[$3],[$4])])])

dnl AC_LIB_PREFIX adds to the CPPFLAGS and LDFLAGS the flags that are needed

dnl to access previously installed libraries. The basic assumption is that

dnl a user will want packages to use other packages he previously installed

dnl with the same --prefix option.

dnl This macro is not needed if only AC_LIB_LINKFLAGS is used to locate

dnl libraries, but is otherwise very convenient.

AC_DEFUN([AC_LIB_PREFIX],

[

  AC_BEFORE([$0], [AC_LIB_LINKFLAGS])

  AC_REQUIRE([AC_PROG_CC])

  AC_REQUIRE([AC_CANONICAL_HOST])

  AC_REQUIRE([AC_LIB_PREPARE_MULTILIB])

  AC_REQUIRE([AC_LIB_PREPARE_PREFIX])

  dnl By default, look in $includedir and $libdir.

  use_additional=yes

  AC_LIB_WITH_FINAL_PREFIX([

    eval additional_includedir=\"$includedir\"

    eval additional_libdir=\"$libdir\"

  ])

  AC_LIB_ARG_WITH([lib-prefix],

[  --with-lib-prefix[=DIR] search for libraries in DIR/include and DIR/lib

  --without-lib-prefix    don't search for libraries in includedir and libdir],

[

    if test "X$withval" = "Xno"; then

      use_additional=no

    else

      if test "X$withval" = "X"; then

        AC_LIB_WITH_FINAL_PREFIX([

          eval additional_includedir=\"$includedir\"

          eval additional_libdir=\"$libdir\"

        ])

      else

        additional_includedir="$withval/include"

        additional_libdir="$withval/$acl_libdirstem"

      fi

    fi

])

  if test $use_additional = yes; then

    dnl Potentially add $additional_includedir to $CPPFLAGS.

    dnl But don't add it

    dnl   1. if it's the standard /usr/include,

    dnl   2. if it's already present in $CPPFLAGS,

    dnl   3. if it's /usr/local/include and we are using GCC on Linux,

    dnl   4. if it doesn't exist as a directory.

    if test "X$additional_includedir" != "X/usr/include"; then

      haveit=

      for x in $CPPFLAGS; do

        AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])

        if test "X$x" = "X-I$additional_includedir"; then

          haveit=yes

          break

        fi

      done

      if test -z "$haveit"; then

        if test "X$additional_includedir" = "X/usr/local/include"; then

          if test -n "$GCC"; then

            case $host_os in

              linux* | gnu* | k*bsd*-gnu) haveit=yes;;

            esac

          fi

        fi

        if test -z "$haveit"; then

          if test -d "$additional_includedir"; then

            dnl Really add $additional_includedir to $CPPFLAGS.

            CPPFLAGS="${CPPFLAGS}${CPPFLAGS:+ }-I$additional_includedir"

          fi

        fi

      fi

    fi

    dnl Potentially add $additional_libdir to $LDFLAGS.

    dnl But don't add it

    dnl   1. if it's the standard /usr/lib,

    dnl   2. if it's already present in $LDFLAGS,

    dnl   3. if it's /usr/local/lib and we are using GCC on Linux,

    dnl   4. if it doesn't exist as a directory.

    if test "X$additional_libdir" != "X/usr/$acl_libdirstem"; then

      haveit=

      for x in $LDFLAGS; do

        AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])

        if test "X$x" = "X-L$additional_libdir"; then

          haveit=yes

          break

        fi

      done

      if test -z "$haveit"; then

        if test "X$additional_libdir" = "X/usr/local/$acl_libdirstem"; then

          if test -n "$GCC"; then

            case $host_os in

              linux*) haveit=yes;;

            esac

          fi

        fi

        if test -z "$haveit"; then

          if test -d "$additional_libdir"; then

            dnl Really add $additional_libdir to $LDFLAGS.

            LDFLAGS="${LDFLAGS}${LDFLAGS:+ }-L$additional_libdir"

          fi

        fi

      fi

    fi

  fi

])

dnl AC_LIB_PREPARE_PREFIX creates variables acl_final_prefix,

dnl acl_final_exec_prefix, containing the values to which $prefix and

dnl $exec_prefix will expand at the end of the configure script.

AC_DEFUN([AC_LIB_PREPARE_PREFIX],

[

  dnl Unfortunately, prefix and exec_prefix get only finally determined

  dnl at the end of configure.

  if test "X$prefix" = "XNONE"; then

    acl_final_prefix="$ac_default_prefix"

  else

    acl_final_prefix="$prefix"

  fi

  if test "X$exec_prefix" = "XNONE"; then

    acl_final_exec_prefix='${prefix}'

  else

    acl_final_exec_prefix="$exec_prefix"

  fi

  acl_save_prefix="$prefix"

  prefix="$acl_final_prefix"

  eval acl_final_exec_prefix=\"$acl_final_exec_prefix\"

  prefix="$acl_save_prefix"

])

dnl AC_LIB_WITH_FINAL_PREFIX([statement]) evaluates statement, with the

dnl variables prefix and exec_prefix bound to the values they will have

dnl at the end of the configure script.

AC_DEFUN([AC_LIB_WITH_FINAL_PREFIX],

[

  acl_save_prefix="$prefix"

  prefix="$acl_final_prefix"

  acl_save_exec_prefix="$exec_prefix"

  exec_prefix="$acl_final_exec_prefix"

  $1

  exec_prefix="$acl_save_exec_prefix"

  prefix="$acl_save_prefix"

])

dnl AC_LIB_PREPARE_MULTILIB creates a variable acl_libdirstem, containing

dnl the basename of the libdir, either "lib" or "lib64".

AC_DEFUN([AC_LIB_PREPARE_MULTILIB],

[

  dnl There is no formal standard regarding lib and lib64. The current

  dnl practice is that on a system supporting 32-bit and 64-bit instruction

  dnl sets or ABIs, 64-bit libraries go under $prefix/lib64 and 32-bit

  dnl libraries go under $prefix/lib. We determine the compiler's default

  dnl mode by looking at the compiler's library search path. If at least

  dnl of its elements ends in /lib64 or points to a directory whose absolute

  dnl pathname ends in /lib64, we assume a 64-bit ABI. Otherwise we use the

  dnl default, namely "lib".

  acl_libdirstem=lib

  searchpath=`(LC_ALL=C $CC -print-search-dirs) 2>/dev/null | sed -n -e 's,^libraries: ,,p' | sed -e 's,^=,,'`

  if test -n "$searchpath"; then

    acl_save_IFS="${IFS= 	}"; IFS=":"

    for searchdir in $searchpath; do

      if test -d "$searchdir"; then

        case "$searchdir" in

          */lib64/ | */lib64 ) acl_libdirstem=lib64 ;;

          *) searchdir=`cd "$searchdir" && pwd`

             case "$searchdir" in

               */lib64 ) acl_libdirstem=lib64 ;;

             esac ;;

        esac

      fi

    done

    IFS="$acl_save_IFS"

  fi

])