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dnl dolt, a replacement for libtool
dnl Copyright © 2007-2008 Josh Triplett <josh@freedesktop.org>
dnl Copying and distribution of this file, with or without modification,
dnl are permitted in any medium without royalty provided the copyright
dnl notice and this notice are preserved.
dnl
dnl To use dolt, invoke the DOLT macro immediately after the libtool macros.
dnl Optionally, copy this file into acinclude.m4, to avoid the need to have it
dnl installed when running autoconf on your project.
AC_DEFUN([DOLT], [
AC_REQUIRE([AC_CANONICAL_HOST])
# dolt, a replacement for libtool
# Josh Triplett <josh@freedesktop.org>
AC_PATH_PROG(DOLT_BASH, bash)
AC_MSG_CHECKING([if dolt supports this host])
dolt_supported=yes
if test x$DOLT_BASH = x; then
dolt_supported=no
fi
if test x$GCC != xyes; then
dolt_supported=no
fi
case $host in
i?86-*-linux*|x86_64-*-linux*|powerpc-*-linux*|powerpc64-*-linux* \
|amd64-*-freebsd*|i?86-*-freebsd*|ia64-*-freebsd*|arm*-*-linux*|sparc*-*-linux*|mips*-*-linux*)
pic_options='-fPIC'
;;
?86-pc-cygwin*|i?86-pc-cygwin*)
pic_options='-DDLL_EXPORT'
;;
i?86-apple-darwin*)
pic_options='-fno-common'
;;
*)
dolt_supported=no
;;
esac
if test x$dolt_supported = xno ; then
AC_MSG_RESULT([no, falling back to libtool])
LTCOMPILE='$(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(COMPILE)'
LTCXXCOMPILE='$(LIBTOOL) --tag=CXX $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CXXCOMPILE)'
else
AC_MSG_RESULT([yes, replacing libtool])
dnl Start writing out doltcompile.
cat <<__DOLTCOMPILE__EOF__ >doltcompile
#!$DOLT_BASH
__DOLTCOMPILE__EOF__
cat <<'__DOLTCOMPILE__EOF__' >>doltcompile
args=("$[]@")
for ((arg=0; arg<${#args@<:@@@:>@}; arg++)) ; do
if test x"${args@<:@$arg@:>@}" = x-o ; then
objarg=$((arg+1))
break
fi
done
if test x$objarg = x ; then
echo 'Error: no -o on compiler command line' 1>&2
exit 1
fi
lo="${args@<:@$objarg@:>@}"
obj="${lo%.lo}"
if test x"$lo" = x"$obj" ; then
echo "Error: libtool object file name \"$lo\" does not end in .lo" 1>&2
exit 1
fi
objbase="${obj##*/}"
__DOLTCOMPILE__EOF__
dnl Write out shared compilation code.
if test x$enable_shared = xyes; then
cat <<'__DOLTCOMPILE__EOF__' >>doltcompile
libobjdir="${obj%$objbase}.libs"
if test ! -d "$libobjdir" ; then
mkdir_out="$(mkdir "$libobjdir" 2>&1)"
mkdir_ret=$?
if test "$mkdir_ret" -ne 0 && test ! -d "$libobjdir" ; then
echo "$mkdir_out" 1>&2
exit $mkdir_ret
fi
fi
pic_object="$libobjdir/$objbase.o"
args@<:@$objarg@:>@="$pic_object"
__DOLTCOMPILE__EOF__
cat <<__DOLTCOMPILE__EOF__ >>doltcompile
"\${args@<:@@@:>@}" $pic_options -DPIC || exit \$?
__DOLTCOMPILE__EOF__
fi
dnl Write out static compilation code.
dnl Avoid duplicate compiler output if also building shared objects.
if test x$enable_static = xyes; then
cat <<'__DOLTCOMPILE__EOF__' >>doltcompile
non_pic_object="$obj.o"
args@<:@$objarg@:>@="$non_pic_object"
__DOLTCOMPILE__EOF__
if test x$enable_shared = xyes; then
cat <<'__DOLTCOMPILE__EOF__' >>doltcompile
"${args@<:@@@:>@}" >/dev/null 2>&1 || exit $?
__DOLTCOMPILE__EOF__
else
cat <<'__DOLTCOMPILE__EOF__' >>doltcompile
"${args@<:@@@:>@}" || exit $?
__DOLTCOMPILE__EOF__
fi
fi
dnl Write out the code to write the .lo file.
dnl The second line of the .lo file must match "^# Generated by .*libtool"
cat <<'__DOLTCOMPILE__EOF__' >>doltcompile
{
echo "# $lo - a libtool object file"
echo "# Generated by doltcompile, not libtool"
__DOLTCOMPILE__EOF__
if test x$enable_shared = xyes; then
cat <<'__DOLTCOMPILE__EOF__' >>doltcompile
echo "pic_object='.libs/${objbase}.o'"
__DOLTCOMPILE__EOF__
else
cat <<'__DOLTCOMPILE__EOF__' >>doltcompile
echo pic_object=none
__DOLTCOMPILE__EOF__
fi
if test x$enable_static = xyes; then
cat <<'__DOLTCOMPILE__EOF__' >>doltcompile
echo "non_pic_object='${objbase}.o'"
__DOLTCOMPILE__EOF__
else
cat <<'__DOLTCOMPILE__EOF__' >>doltcompile
echo non_pic_object=none
__DOLTCOMPILE__EOF__
fi
cat <<'__DOLTCOMPILE__EOF__' >>doltcompile
} > "$lo"
__DOLTCOMPILE__EOF__
dnl Done writing out doltcompile; substitute it for libtool compilation.
chmod +x doltcompile
LTCOMPILE='$(top_builddir)/doltcompile $(COMPILE)'
LTCXXCOMPILE='$(top_builddir)/doltcompile $(CXXCOMPILE)'
dnl automake ignores LTCOMPILE and LTCXXCOMPILE when it has separate CFLAGS for
dnl a target, so write out a libtool wrapper to handle that case.
dnl Note that doltlibtool does not handle inferred tags or option arguments
dnl without '=', because automake does not use them.
cat <<__DOLTLIBTOOL__EOF__ > doltlibtool
#!$DOLT_BASH
__DOLTLIBTOOL__EOF__
cat <<'__DOLTLIBTOOL__EOF__' >>doltlibtool
top_builddir_slash="${0%%doltlibtool}"
: ${top_builddir_slash:=./}
args=()
modeok=false
tagok=false
for arg in "$[]@"; do
case "$arg" in
--mode=compile) modeok=true ;;
--tag=CC|--tag=CXX) tagok=true ;;
--quiet) ;;
*) args@<:@${#args[@]}@:>@="$arg" ;;
esac
done
if $modeok && $tagok ; then
. ${top_builddir_slash}doltcompile "${args@<:@@@:>@}"
else
exec ${top_builddir_slash}libtool "$[]@"
fi
__DOLTLIBTOOL__EOF__
dnl Done writing out doltlibtool; substitute it for libtool.
chmod +x doltlibtool
LIBTOOL='$(top_builddir)/doltlibtool'
fi
AC_SUBST(LTCOMPILE)
AC_SUBST(LTCXXCOMPILE)
# end dolt
])
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