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https://github.com/AuxXxilium/kmod.git
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build: use dolt
Drop-in replacement to libtool: http://dolt.freedesktop.org/. More details: http://marc.info/?l=freedesktop-xorg&m=120791871615872&w=3 kmod is relatively fast to compile, so it doesn't matter much. Nonetheless, less forks the better. Compilation time using ./bootstrap-configure --disable-manpages and make -j4 libtool real 0m6.453s user 0m21.067s sys 0m0.773s dolt real 0m4.792s user 0m15.920s sys 0m0.637s
This commit is contained in:
Lucas De Marchi
parent
d9c7175859
commit
da6c0d2f52
2
.gitignore
vendored
2
.gitignore
vendored
@ -18,6 +18,8 @@
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/configure
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/coverage
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/cov-int
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/doltcompile
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/doltlibtool
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/libtool
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/stamp-h1
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/test-suite.log
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@ -17,6 +17,7 @@ AM_MAINTAINER_MODE([enable])
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AM_INIT_AUTOMAKE([check-news foreign 1.11 silent-rules tar-pax no-dist-gzip dist-xz subdir-objects color-tests parallel-tests])
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AM_SILENT_RULES([yes])
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LT_INIT([disable-static pic-only])
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DOLT
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AS_IF([test "x$enable_static" = "xyes"], [AC_MSG_ERROR([--enable-static is not supported by kmod])])
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AS_IF([test "x$enable_largefile" = "xno"], [AC_MSG_ERROR([--disable-largefile is not supported by kmod])])
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178
m4/dolt.m4
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178
m4/dolt.m4
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@ -0,0 +1,178 @@
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dnl dolt, a replacement for libtool
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dnl Copyright © 2007-2010 Josh Triplett <josh@joshtriplett.org>
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dnl Copying and distribution of this file, with or without modification,
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dnl are permitted in any medium without royalty provided the copyright
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dnl notice and this notice are preserved.
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dnl
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dnl To use dolt, invoke the DOLT macro immediately after the libtool macros.
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dnl Optionally, copy this file into acinclude.m4, to avoid the need to have it
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dnl installed when running autoconf on your project.
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AC_DEFUN([DOLT], [
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AC_REQUIRE([AC_CANONICAL_HOST])
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# dolt, a replacement for libtool
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# Josh Triplett <josh@freedesktop.org>
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AC_PATH_PROG(DOLT_BASH, bash)
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AC_MSG_CHECKING([if dolt supports this host])
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dolt_supported=yes
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if test x$DOLT_BASH = x; then
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dolt_supported=no
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fi
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if test x$GCC != xyes; then
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dolt_supported=no
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fi
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case $host in
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*-*-linux* \
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|amd64-*-freebsd*|i?86-*-freebsd*|ia64-*-freebsd*)
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pic_options='-fPIC'
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;;
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i?86-apple-darwin*)
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pic_options='-fno-common'
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;;
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*)
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dolt_supported=no
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;;
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esac
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if test x$dolt_supported = xno ; then
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AC_MSG_RESULT([no, falling back to libtool])
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LTCOMPILE='$(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(COMPILE)'
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LTCXXCOMPILE='$(LIBTOOL) --tag=CXX $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CXXCOMPILE)'
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else
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AC_MSG_RESULT([yes, replacing libtool])
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dnl Start writing out doltcompile.
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cat <<__DOLTCOMPILE__EOF__ >doltcompile
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#!$DOLT_BASH
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__DOLTCOMPILE__EOF__
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cat <<'__DOLTCOMPILE__EOF__' >>doltcompile
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args=("$[]@")
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for ((arg=0; arg<${#args@<:@@@:>@}; arg++)) ; do
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if test x"${args@<:@$arg@:>@}" = x-o ; then
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objarg=$((arg+1))
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break
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fi
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done
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if test x$objarg = x ; then
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echo 'Error: no -o on compiler command line' 1>&2
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exit 1
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fi
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lo="${args@<:@$objarg@:>@}"
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obj="${lo%.lo}"
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if test x"$lo" = x"$obj" ; then
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echo "Error: libtool object file name \"$lo\" does not end in .lo" 1>&2
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exit 1
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fi
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objbase="${obj##*/}"
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__DOLTCOMPILE__EOF__
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dnl Write out shared compilation code.
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if test x$enable_shared = xyes; then
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cat <<'__DOLTCOMPILE__EOF__' >>doltcompile
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libobjdir="${obj%$objbase}.libs"
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if test ! -d "$libobjdir" ; then
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mkdir_out="$(mkdir "$libobjdir" 2>&1)"
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mkdir_ret=$?
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if test "$mkdir_ret" -ne 0 && test ! -d "$libobjdir" ; then
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echo "$mkdir_out" 1>&2
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exit $mkdir_ret
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fi
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fi
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pic_object="$libobjdir/$objbase.o"
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args@<:@$objarg@:>@="$pic_object"
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__DOLTCOMPILE__EOF__
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cat <<__DOLTCOMPILE__EOF__ >>doltcompile
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"\${args@<:@@@:>@}" $pic_options -DPIC || exit \$?
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__DOLTCOMPILE__EOF__
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fi
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dnl Write out static compilation code.
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dnl Avoid duplicate compiler output if also building shared objects.
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if test x$enable_static = xyes; then
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cat <<'__DOLTCOMPILE__EOF__' >>doltcompile
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non_pic_object="$obj.o"
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args@<:@$objarg@:>@="$non_pic_object"
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__DOLTCOMPILE__EOF__
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if test x$enable_shared = xyes; then
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cat <<'__DOLTCOMPILE__EOF__' >>doltcompile
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"${args@<:@@@:>@}" >/dev/null 2>&1 || exit $?
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__DOLTCOMPILE__EOF__
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else
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cat <<'__DOLTCOMPILE__EOF__' >>doltcompile
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"${args@<:@@@:>@}" || exit $?
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__DOLTCOMPILE__EOF__
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fi
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fi
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dnl Write out the code to write the .lo file.
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dnl The second line of the .lo file must match "^# Generated by .*libtool"
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cat <<'__DOLTCOMPILE__EOF__' >>doltcompile
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{
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echo "# $lo - a libtool object file"
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echo "# Generated by doltcompile, not libtool"
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__DOLTCOMPILE__EOF__
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if test x$enable_shared = xyes; then
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cat <<'__DOLTCOMPILE__EOF__' >>doltcompile
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echo "pic_object='.libs/${objbase}.o'"
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__DOLTCOMPILE__EOF__
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else
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cat <<'__DOLTCOMPILE__EOF__' >>doltcompile
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echo pic_object=none
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__DOLTCOMPILE__EOF__
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fi
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if test x$enable_static = xyes; then
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cat <<'__DOLTCOMPILE__EOF__' >>doltcompile
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echo "non_pic_object='${objbase}.o'"
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__DOLTCOMPILE__EOF__
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else
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cat <<'__DOLTCOMPILE__EOF__' >>doltcompile
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echo non_pic_object=none
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__DOLTCOMPILE__EOF__
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fi
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cat <<'__DOLTCOMPILE__EOF__' >>doltcompile
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} > "$lo"
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__DOLTCOMPILE__EOF__
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dnl Done writing out doltcompile; substitute it for libtool compilation.
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chmod +x doltcompile
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LTCOMPILE='$(top_builddir)/doltcompile $(COMPILE)'
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LTCXXCOMPILE='$(top_builddir)/doltcompile $(CXXCOMPILE)'
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dnl automake ignores LTCOMPILE and LTCXXCOMPILE when it has separate CFLAGS for
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dnl a target, so write out a libtool wrapper to handle that case.
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dnl Note that doltlibtool does not handle inferred tags or option arguments
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dnl without '=', because automake does not use them.
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cat <<__DOLTLIBTOOL__EOF__ > doltlibtool
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#!$DOLT_BASH
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__DOLTLIBTOOL__EOF__
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cat <<'__DOLTLIBTOOL__EOF__' >>doltlibtool
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top_builddir_slash="${0%%doltlibtool}"
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: ${top_builddir_slash:=./}
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args=()
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modeok=false
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tagok=false
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for arg in "$[]@"; do
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case "$arg" in
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--silent) : ;;
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--mode=compile) modeok=true ;;
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--tag=CC|--tag=CXX) tagok=true ;;
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*) args@<:@${#args[@]}@:>@="$arg" ;;
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esac
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done
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if $modeok && $tagok ; then
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. ${top_builddir_slash}doltcompile "${args@<:@@@:>@}"
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else
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exec ${top_builddir_slash}libtool "$[]@"
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fi
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__DOLTLIBTOOL__EOF__
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dnl Done writing out doltlibtool; substitute it for libtool.
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chmod +x doltlibtool
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LIBTOOL='$(top_builddir)/doltlibtool'
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fi
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AC_SUBST(LTCOMPILE)
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AC_SUBST(LTCXXCOMPILE)
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# end dolt
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])
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