1 dnl dolt, a replacement for libtool 2 dnl Copyright 2007-2008 Josh Triplett <josh (a] 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. 6 dnl 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. 10 11 AC_DEFUN([DOLT], [ 12 AC_REQUIRE([AC_CANONICAL_HOST]) 13 # dolt, a replacement for libtool 14 # Josh Triplett <josh (a] freedesktop.org> 15 AC_PATH_PROG(DOLT_BASH, bash) 16 AC_MSG_CHECKING([if dolt supports this host]) 17 dolt_supported=yes 18 if test x$DOLT_BASH = x; then 19 dolt_supported=no 20 fi 21 if test x$GCC != xyes; then 22 dolt_supported=no 23 fi 24 case $host in 25 i?86-*-linux*|x86_64-*-linux*|powerpc-*-linux* \ 26 |amd64-*-freebsd*|i?86-*-freebsd*|ia64-*-freebsd*) 27 pic_options='-fPIC' 28 ;; 29 i?86-apple-darwin*) 30 pic_options='-fno-common' 31 ;; 32 *mingw32*) 33 pic_options='-DDLL_EXPORT' 34 ;; 35 *) 36 dolt_supported=no 37 ;; 38 esac 39 if test x$dolt_supported = xno ; then 40 AC_MSG_RESULT([no, falling back to libtool]) 41 LTCOMPILE='$(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(COMPILE)' 42 LTCXXCOMPILE='$(LIBTOOL) --tag=CXX $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CXXCOMPILE)' 43 else 44 AC_MSG_RESULT([yes, replacing libtool]) 45 46 dnl Start writing out doltcompile. 47 cat <<__DOLTCOMPILE__EOF__ >doltcompile 48 #!$DOLT_BASH 49 __DOLTCOMPILE__EOF__ 50 cat <<'__DOLTCOMPILE__EOF__' >>doltcompile 51 args=("$[]@") 52 for ((arg=0; arg<${#args@<:@@@:>@}; arg++)) ; do 53 if test x"${args@<:@$arg@:>@}" = x-o ; then 54 objarg=$((arg+1)) 55 break 56 fi 57 done 58 if test x$objarg = x ; then 59 echo 'Error: no -o on compiler command line' 1>&2 60 exit 1 61 fi 62 lo="${args@<:@$objarg@:>@}" 63 obj="${lo%.lo}" 64 if test x"$lo" = x"$obj" ; then 65 echo "Error: libtool object file name \"$lo\" does not end in .lo" 1>&2 66 exit 1 67 fi 68 objbase="${obj##*/}" 69 __DOLTCOMPILE__EOF__ 70 71 dnl Write out shared compilation code. 72 if test x$enable_shared = xyes; then 73 cat <<'__DOLTCOMPILE__EOF__' >>doltcompile 74 libobjdir="${obj%$objbase}.libs" 75 if test ! -d "$libobjdir" ; then 76 mkdir_out="$(mkdir "$libobjdir" 2>&1)" 77 mkdir_ret=$? 78 if test "$mkdir_ret" -ne 0 && test ! -d "$libobjdir" ; then 79 echo "$mkdir_out" 1>&2 80 exit $mkdir_ret 81 fi 82 fi 83 pic_object="$libobjdir/$objbase.o" 84 args@<:@$objarg@:>@="$pic_object" 85 __DOLTCOMPILE__EOF__ 86 cat <<__DOLTCOMPILE__EOF__ >>doltcompile 87 "\${args@<:@@@:>@}" $pic_options -DPIC || exit \$? 88 __DOLTCOMPILE__EOF__ 89 fi 90 91 dnl Write out static compilation code. 92 dnl Avoid duplicate compiler output if also building shared objects. 93 if test x$enable_static = xyes; then 94 cat <<'__DOLTCOMPILE__EOF__' >>doltcompile 95 non_pic_object="$obj.o" 96 args@<:@$objarg@:>@="$non_pic_object" 97 __DOLTCOMPILE__EOF__ 98 if test x$enable_shared = xyes; then 99 cat <<'__DOLTCOMPILE__EOF__' >>doltcompile 100 "${args@<:@@@:>@}" >/dev/null 2>&1 || exit $? 101 __DOLTCOMPILE__EOF__ 102 else 103 cat <<'__DOLTCOMPILE__EOF__' >>doltcompile 104 "${args@<:@@@:>@}" || exit $? 105 __DOLTCOMPILE__EOF__ 106 fi 107 fi 108 109 dnl Write out the code to write the .lo file. 110 dnl The second line of the .lo file must match "^# Generated by .*libtool" 111 cat <<'__DOLTCOMPILE__EOF__' >>doltcompile 112 { 113 echo "# $lo - a libtool object file" 114 echo "# Generated by doltcompile, not libtool" 115 __DOLTCOMPILE__EOF__ 116 117 if test x$enable_shared = xyes; then 118 cat <<'__DOLTCOMPILE__EOF__' >>doltcompile 119 echo "pic_object='.libs/${objbase}.o'" 120 __DOLTCOMPILE__EOF__ 121 else 122 cat <<'__DOLTCOMPILE__EOF__' >>doltcompile 123 echo pic_object=none 124 __DOLTCOMPILE__EOF__ 125 fi 126 127 if test x$enable_static = xyes; then 128 cat <<'__DOLTCOMPILE__EOF__' >>doltcompile 129 echo "non_pic_object='${objbase}.o'" 130 __DOLTCOMPILE__EOF__ 131 else 132 cat <<'__DOLTCOMPILE__EOF__' >>doltcompile 133 echo non_pic_object=none 134 __DOLTCOMPILE__EOF__ 135 fi 136 137 cat <<'__DOLTCOMPILE__EOF__' >>doltcompile 138 } > "$lo" 139 __DOLTCOMPILE__EOF__ 140 141 dnl Done writing out doltcompile; substitute it for libtool compilation. 142 chmod +x doltcompile 143 LTCOMPILE='$(top_builddir)/doltcompile $(COMPILE)' 144 LTCXXCOMPILE='$(top_builddir)/doltcompile $(CXXCOMPILE)' 145 146 dnl automake ignores LTCOMPILE and LTCXXCOMPILE when it has separate CFLAGS for 147 dnl a target, so write out a libtool wrapper to handle that case. 148 dnl Note that doltlibtool does not handle inferred tags or option arguments 149 dnl without '=', because automake does not use them. 150 cat <<__DOLTLIBTOOL__EOF__ > doltlibtool 151 #!$DOLT_BASH 152 __DOLTLIBTOOL__EOF__ 153 cat <<'__DOLTLIBTOOL__EOF__' >>doltlibtool 154 top_builddir_slash="${0%%doltlibtool}" 155 : ${top_builddir_slash:=./} 156 args=() 157 modeok=false 158 tagok=false 159 for arg in "$[]@"; do 160 case "$arg" in 161 --silent) ;; 162 --mode=compile) modeok=true ;; 163 --tag=CC|--tag=CXX) tagok=true ;; 164 *) args@<:@${#args[@]}@:>@="$arg" ;; 165 esac 166 done 167 if $modeok && $tagok ; then 168 . ${top_builddir_slash}doltcompile "${args@<:@@@:>@}" 169 else 170 exec ${top_builddir_slash}libtool "$[]@" 171 fi 172 __DOLTLIBTOOL__EOF__ 173 174 dnl Done writing out doltlibtool; substitute it for libtool. 175 chmod +x doltlibtool 176 LIBTOOL='$(top_builddir)/doltlibtool' 177 fi 178 AC_SUBST(LTCOMPILE) 179 AC_SUBST(LTCXXCOMPILE) 180 # end dolt 181 ]) 182
