| 1 | ## -*- Autoconf -*- |
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| 2 | # Copyright (C) 1998, 1999, 2000, 2001, 2003, 2004, 2005, 2006, 2008 |
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| 3 | # Free Software Foundation, Inc. |
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| 4 | # |
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| 5 | # This file is free software; the Free Software Foundation |
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| 6 | # gives unlimited permission to copy and/or distribute it, |
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| 7 | # with or without modifications, as long as this notice is preserved. |
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| 8 | |
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| 9 | # serial 6 |
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| 10 | |
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| 11 | # AM_ENABLE_MULTILIB([MAKEFILE], [REL-TO-TOP-SRCDIR]) |
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| 12 | # --------------------------------------------------- |
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| 13 | # Add --enable-multilib to configure. |
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| 14 | AC_DEFUN([AM_ENABLE_MULTILIB], |
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| 15 | [# Default to --enable-multilib |
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| 16 | AC_ARG_ENABLE(multilib, |
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| 17 | [ --enable-multilib build many library versions (default)], |
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| 18 | [case "$enableval" in |
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| 19 | yes) multilib=yes ;; |
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| 20 | no) multilib=no ;; |
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| 21 | *) AC_MSG_ERROR([bad value $enableval for multilib option]) ;; |
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| 22 | esac], |
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| 23 | [multilib=yes]) |
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| 24 | |
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| 25 | # We may get other options which we leave undocumented: |
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| 26 | # --with-target-subdir, --with-multisrctop, --with-multisubdir |
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| 27 | # See config-ml.in if you want the gory details. |
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| 28 | |
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| 29 | if test "$srcdir" = "."; then |
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| 30 | if test "$with_target_subdir" != "."; then |
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| 31 | multi_basedir="$srcdir/$with_multisrctop../$2" |
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| 32 | else |
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| 33 | multi_basedir="$srcdir/$with_multisrctop$2" |
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| 34 | fi |
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| 35 | else |
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| 36 | multi_basedir="$srcdir/$2" |
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| 37 | fi |
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| 38 | AC_SUBST(multi_basedir) |
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| 39 | |
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| 40 | # Even if the default multilib is not a cross compilation, |
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| 41 | # it may be that some of the other multilibs are. |
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| 42 | if test $cross_compiling = no && test $multilib = yes \ |
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| 43 | && test "x${with_multisubdir}" != x ; then |
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| 44 | cross_compiling=maybe |
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| 45 | fi |
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| 46 | |
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| 47 | AC_OUTPUT_COMMANDS([ |
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| 48 | # Only add multilib support code if we just rebuilt the top-level |
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| 49 | # Makefile. |
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| 50 | case " $CONFIG_FILES " in |
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| 51 | *" ]m4_default([$1],Makefile)[ "*) |
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| 52 | ac_file=]m4_default([$1],Makefile)[ . ${multi_basedir}/config-ml.in |
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| 53 | ;; |
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| 54 | esac], |
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| 55 | [ |
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| 56 | srcdir="$srcdir" |
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| 57 | host="$host" |
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| 58 | target="$target" |
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| 59 | with_multisubdir="$with_multisubdir" |
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| 60 | with_multisrctop="$with_multisrctop" |
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| 61 | with_target_subdir="$with_target_subdir" |
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| 62 | ac_configure_args="${multilib_arg} ${ac_configure_args}" |
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| 63 | multi_basedir="$multi_basedir" |
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| 64 | CONFIG_SHELL=${CONFIG_SHELL-/bin/sh} |
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| 65 | CC="$CC" |
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| 66 | CXX="$CXX" |
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| 67 | GFORTRAN="$GFORTRAN" |
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| 68 | GCJ="$GCJ"])])dnl |
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