1 dnl dolt, a replacement for libtool
2 dnl Copyright © 2007-2008 Josh Triplett <josh@freedesktop.org>
3 dnl Copying and distribution of this file, with or without modification,
4 dnl are permitted in any medium without royalty provided the copyright
5 dnl notice and this notice are preserved.
7 dnl To use dolt, invoke the DOLT macro immediately after the libtool macros.
8 dnl Optionally, copy this file into acinclude.m4, to avoid the need to have it
9 dnl installed when running autoconf on your project.
12 AC_REQUIRE([AC_CANONICAL_HOST])
13 # dolt, a replacement for libtool
14 # Josh Triplett <josh@freedesktop.org>
15 AC_PATH_PROG(DOLT_BASH, bash)
16 AC_MSG_CHECKING([if dolt supports this host])
18 if test x$DOLT_BASH = x; then
21 if test x$GCC != xyes; then
25 i?86-*-linux*|x86_64-*-linux*|powerpc-*-linux* \
26 |amd64-*-freebsd*|i?86-*-freebsd*|ia64-*-freebsd*)
30 pic_options='-fno-common'
36 if test x$dolt_supported = xno ; then
37 AC_MSG_RESULT([no, falling back to libtool])
38 LTCOMPILE='$(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(COMPILE)'
39 LTCXXCOMPILE='$(LIBTOOL) --tag=CXX $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CXXCOMPILE)'
41 AC_MSG_RESULT([yes, replacing libtool])
43 dnl Start writing out doltcompile.
44 cat <<__DOLTCOMPILE__EOF__ >doltcompile
47 cat <<'__DOLTCOMPILE__EOF__' >>doltcompile
49 for ((arg=0; arg<${#args@<:@@@:>@}; arg++)) ; do
50 if test x"${args@<:@$arg@:>@}" = x-o ; then
55 if test x$objarg = x ; then
56 echo 'Error: no -o on compiler command line' 1>&2
59 lo="${args@<:@$objarg@:>@}"
61 if test x"$lo" = x"$obj" ; then
62 echo "Error: libtool object file name \"$lo\" does not end in .lo" 1>&2
68 dnl Write out shared compilation code.
69 if test x$enable_shared = xyes; then
70 cat <<'__DOLTCOMPILE__EOF__' >>doltcompile
71 libobjdir="${obj%$objbase}.libs"
72 if test ! -d "$libobjdir" ; then
73 mkdir_out="$(mkdir "$libobjdir" 2>&1)"
75 if test "$mkdir_ret" -ne 0 && test ! -d "$libobjdir" ; then
76 echo "$mkdir_out" 1>&2
80 pic_object="$libobjdir/$objbase.o"
81 args@<:@$objarg@:>@="$pic_object"
83 cat <<__DOLTCOMPILE__EOF__ >>doltcompile
84 "\${args@<:@@@:>@}" $pic_options -DPIC || exit \$?
88 dnl Write out static compilation code.
89 dnl Avoid duplicate compiler output if also building shared objects.
90 if test x$enable_static = xyes; then
91 cat <<'__DOLTCOMPILE__EOF__' >>doltcompile
92 non_pic_object="$obj.o"
93 args@<:@$objarg@:>@="$non_pic_object"
95 if test x$enable_shared = xyes; then
96 cat <<'__DOLTCOMPILE__EOF__' >>doltcompile
97 "${args@<:@@@:>@}" >/dev/null 2>&1 || exit $?
100 cat <<'__DOLTCOMPILE__EOF__' >>doltcompile
101 "${args@<:@@@:>@}" || exit $?
106 dnl Write out the code to write the .lo file.
107 dnl The second line of the .lo file must match "^# Generated by .*libtool"
108 cat <<'__DOLTCOMPILE__EOF__' >>doltcompile
110 echo "# $lo - a libtool object file"
111 echo "# Generated by doltcompile, not libtool"
114 if test x$enable_shared = xyes; then
115 cat <<'__DOLTCOMPILE__EOF__' >>doltcompile
116 echo "pic_object='.libs/${objbase}.o'"
119 cat <<'__DOLTCOMPILE__EOF__' >>doltcompile
124 if test x$enable_static = xyes; then
125 cat <<'__DOLTCOMPILE__EOF__' >>doltcompile
126 echo "non_pic_object='${objbase}.o'"
129 cat <<'__DOLTCOMPILE__EOF__' >>doltcompile
130 echo non_pic_object=none
134 cat <<'__DOLTCOMPILE__EOF__' >>doltcompile
138 dnl Done writing out doltcompile; substitute it for libtool compilation.
140 LTCOMPILE='$(top_builddir)/doltcompile $(COMPILE)'
141 LTCXXCOMPILE='$(top_builddir)/doltcompile $(CXXCOMPILE)'
143 dnl automake ignores LTCOMPILE and LTCXXCOMPILE when it has separate CFLAGS for
144 dnl a target, so write out a libtool wrapper to handle that case.
145 dnl Note that doltlibtool does not handle inferred tags or option arguments
146 dnl without '=', because automake does not use them.
147 cat <<__DOLTLIBTOOL__EOF__ > doltlibtool
150 cat <<'__DOLTLIBTOOL__EOF__' >>doltlibtool
151 top_builddir_slash="${0%%doltlibtool}"
152 : ${top_builddir_slash:=./}
156 for arg in "$[]@"; do
158 --mode=compile) modeok=true ;;
159 --tag=CC|--tag=CXX) tagok=true ;;
163 if $modeok && $tagok ; then
164 . ${top_builddir_slash}doltcompile "${args@<:@@@:>@}"
166 exec ${top_builddir_slash}libtool "$[]@"
170 dnl Done writing out doltlibtool; substitute it for libtool.
172 LIBTOOL='$(top_builddir)/doltlibtool'
175 AC_SUBST(LTCXXCOMPILE)