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Diffstat (limited to 'acinclude.m4')
| -rw-r--r-- | acinclude.m4 | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/acinclude.m4 b/acinclude.m4 index f3d8734f3..822adbe0d 100644 --- a/acinclude.m4 +++ b/acinclude.m4 @@ -1,3 +1,144 @@ +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. +dnl +dnl git snapshot: 198a3026b347b9220a2f2e2ae23a3049c35af262 + +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 libtool sucks]) +AC_MSG_RESULT([yup, it does]) +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 $host in +i?86-*-linux*|x86_64-*-linux*) ;; +*) dolt_supported=no ;; +esac +if test x$dolt_supported = xno ; then + AC_MSG_RESULT([no, falling back to libtool]) +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 "$libobjdir" + mkdir_ret=$? + if test "$mkdir_ret" -ne 0 && test ! -d "$libobjdir" ; then + exit $mkdir_ret + fi +fi +pic_object="$libobjdir/$objbase.o" +args@<:@$objarg@:>@="$pic_object" +"${args@<:@@@:>@}" -fPIC -DPIC +__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 +__DOLTCOMPILE__EOF__ + else + cat <<'__DOLTCOMPILE__EOF__' >>doltcompile +"${args@<:@@@:>@}" +__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='$pic_object'" +__DOLTCOMPILE__EOF__ + else + cat <<'__DOLTCOMPILE__EOF__' >>doltcompile +echo pic_object=none +__DOLTCOMPILE__EOF__ + fi + + if test x$enable_static = xyes; then + cat <<'__DOLTCOMPILE__EOF__' >>doltcompile +echo "non_pic_object='$non_pic_object'" +__DOLTCOMPILE__EOF__ + else + cat <<'__DOLTCOMPILE__EOF__' >>doltcompile +echo non_pic_object=none +__DOLTCOMPILE__EOF__ + fi + + cat <<'__DOLTCOMPILE__EOF__' >>doltcompile +} > "$lo" +__DOLTCOMPILE__EOF__ + +dnl Done writing out doltcompile; substitute it for libtool compilation. + chmod +x doltcompile + LTCOMPILE='$(top_builddir)/doltcompile $(COMPILE)' + AC_SUBST(LTCOMPILE) + LTCXXCOMPILE='$(top_builddir)/doltcompile $(CXXCOMPILE)' + AC_SUBST(LTCXXCOMPILE) +fi +# end dolt +]) + + + + ##### http://autoconf-archive.cryp.to/ac_define_dir.html # # SYNOPSIS |