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da6c0d2f LDM |
1 | dnl dolt, a replacement for libtool |
2 | dnl Copyright © 2007-2010 Josh Triplett <josh@joshtriplett.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@freedesktop.org> | |
9cc8a20d | 15 | AC_PATH_PROG([DOLT_BASH], [bash]) |
da6c0d2f LDM |
16 | AC_MSG_CHECKING([if dolt supports this host]) |
17 | dolt_supported=yes | |
9cc8a20d LDM |
18 | AS_IF([test x$DOLT_BASH = x], [dolt_supported=no]) |
19 | AS_IF([test x$GCC != xyes], [dolt_supported=no]) | |
20 | ||
21 | AS_CASE([$host], | |
22 | [*-*-linux*|*-*-freebsd*], [pic_options='-fPIC'], | |
23 | [*-apple-darwin*], [pic_options='-fno-common'], | |
24 | [*mingw*|*nacl*], [pic_options=''] | |
25 | [*], [dolt_supported=no] | |
26 | ) | |
27 | AS_IF([test x$dolt_supported = xno], [ | |
da6c0d2f | 28 | AC_MSG_RESULT([no, falling back to libtool]) |
9cc8a20d LDM |
29 | LTCOMPILE='$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(COMPILE)' |
30 | LTCXXCOMPILE='$(LIBTOOL) $(AM_V_lt) --tag=CXX $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CXXCOMPILE)' | |
31 | m4_pattern_allow([AM_V_lt]) | |
32 | ], [ | |
da6c0d2f LDM |
33 | AC_MSG_RESULT([yes, replacing libtool]) |
34 | ||
35 | dnl Start writing out doltcompile. | |
36 | cat <<__DOLTCOMPILE__EOF__ >doltcompile | |
37 | #!$DOLT_BASH | |
38 | __DOLTCOMPILE__EOF__ | |
39 | cat <<'__DOLTCOMPILE__EOF__' >>doltcompile | |
40 | args=("$[]@") | |
41 | for ((arg=0; arg<${#args@<:@@@:>@}; arg++)) ; do | |
42 | if test x"${args@<:@$arg@:>@}" = x-o ; then | |
43 | objarg=$((arg+1)) | |
44 | break | |
45 | fi | |
46 | done | |
47 | if test x$objarg = x ; then | |
48 | echo 'Error: no -o on compiler command line' 1>&2 | |
49 | exit 1 | |
50 | fi | |
51 | lo="${args@<:@$objarg@:>@}" | |
52 | obj="${lo%.lo}" | |
53 | if test x"$lo" = x"$obj" ; then | |
54 | echo "Error: libtool object file name \"$lo\" does not end in .lo" 1>&2 | |
55 | exit 1 | |
56 | fi | |
57 | objbase="${obj##*/}" | |
58 | __DOLTCOMPILE__EOF__ | |
59 | ||
60 | dnl Write out shared compilation code. | |
61 | if test x$enable_shared = xyes; then | |
62 | cat <<'__DOLTCOMPILE__EOF__' >>doltcompile | |
63 | libobjdir="${obj%$objbase}.libs" | |
64 | if test ! -d "$libobjdir" ; then | |
65 | mkdir_out="$(mkdir "$libobjdir" 2>&1)" | |
66 | mkdir_ret=$? | |
67 | if test "$mkdir_ret" -ne 0 && test ! -d "$libobjdir" ; then | |
68 | echo "$mkdir_out" 1>&2 | |
69 | exit $mkdir_ret | |
70 | fi | |
71 | fi | |
72 | pic_object="$libobjdir/$objbase.o" | |
73 | args@<:@$objarg@:>@="$pic_object" | |
74 | __DOLTCOMPILE__EOF__ | |
75 | cat <<__DOLTCOMPILE__EOF__ >>doltcompile | |
9cc8a20d LDM |
76 | pic_options="$pic_options" |
77 | if test x\$passthrough = xtrue; then | |
78 | pic_options="" | |
79 | fi | |
80 | __DOLTCOMPILE__EOF__ | |
81 | cat <<'__DOLTCOMPILE__EOF__' >>doltcompile | |
82 | "${args@<:@@@:>@}" $pic_options -DPIC || exit $? | |
da6c0d2f LDM |
83 | __DOLTCOMPILE__EOF__ |
84 | fi | |
85 | ||
86 | dnl Write out static compilation code. | |
87 | dnl Avoid duplicate compiler output if also building shared objects. | |
88 | if test x$enable_static = xyes; then | |
89 | cat <<'__DOLTCOMPILE__EOF__' >>doltcompile | |
90 | non_pic_object="$obj.o" | |
91 | args@<:@$objarg@:>@="$non_pic_object" | |
92 | __DOLTCOMPILE__EOF__ | |
93 | if test x$enable_shared = xyes; then | |
94 | cat <<'__DOLTCOMPILE__EOF__' >>doltcompile | |
95 | "${args@<:@@@:>@}" >/dev/null 2>&1 || exit $? | |
96 | __DOLTCOMPILE__EOF__ | |
97 | else | |
98 | cat <<'__DOLTCOMPILE__EOF__' >>doltcompile | |
99 | "${args@<:@@@:>@}" || exit $? | |
100 | __DOLTCOMPILE__EOF__ | |
101 | fi | |
102 | fi | |
103 | ||
104 | dnl Write out the code to write the .lo file. | |
105 | dnl The second line of the .lo file must match "^# Generated by .*libtool" | |
106 | cat <<'__DOLTCOMPILE__EOF__' >>doltcompile | |
107 | { | |
108 | echo "# $lo - a libtool object file" | |
109 | echo "# Generated by doltcompile, not libtool" | |
110 | __DOLTCOMPILE__EOF__ | |
111 | ||
112 | if test x$enable_shared = xyes; then | |
113 | cat <<'__DOLTCOMPILE__EOF__' >>doltcompile | |
114 | echo "pic_object='.libs/${objbase}.o'" | |
115 | __DOLTCOMPILE__EOF__ | |
116 | else | |
117 | cat <<'__DOLTCOMPILE__EOF__' >>doltcompile | |
118 | echo pic_object=none | |
119 | __DOLTCOMPILE__EOF__ | |
120 | fi | |
121 | ||
122 | if test x$enable_static = xyes; then | |
123 | cat <<'__DOLTCOMPILE__EOF__' >>doltcompile | |
124 | echo "non_pic_object='${objbase}.o'" | |
125 | __DOLTCOMPILE__EOF__ | |
126 | else | |
127 | cat <<'__DOLTCOMPILE__EOF__' >>doltcompile | |
128 | echo non_pic_object=none | |
129 | __DOLTCOMPILE__EOF__ | |
130 | fi | |
131 | ||
132 | cat <<'__DOLTCOMPILE__EOF__' >>doltcompile | |
133 | } > "$lo" | |
134 | __DOLTCOMPILE__EOF__ | |
135 | ||
136 | dnl Done writing out doltcompile; substitute it for libtool compilation. | |
137 | chmod +x doltcompile | |
138 | LTCOMPILE='$(top_builddir)/doltcompile $(COMPILE)' | |
139 | LTCXXCOMPILE='$(top_builddir)/doltcompile $(CXXCOMPILE)' | |
140 | ||
141 | dnl automake ignores LTCOMPILE and LTCXXCOMPILE when it has separate CFLAGS for | |
142 | dnl a target, so write out a libtool wrapper to handle that case. | |
143 | dnl Note that doltlibtool does not handle inferred tags or option arguments | |
144 | dnl without '=', because automake does not use them. | |
145 | cat <<__DOLTLIBTOOL__EOF__ > doltlibtool | |
146 | #!$DOLT_BASH | |
147 | __DOLTLIBTOOL__EOF__ | |
148 | cat <<'__DOLTLIBTOOL__EOF__' >>doltlibtool | |
149 | top_builddir_slash="${0%%doltlibtool}" | |
150 | : ${top_builddir_slash:=./} | |
151 | args=() | |
152 | modeok=false | |
153 | tagok=false | |
154 | for arg in "$[]@"; do | |
155 | case "$arg" in | |
da6c0d2f LDM |
156 | --mode=compile) modeok=true ;; |
157 | --tag=CC|--tag=CXX) tagok=true ;; | |
9cc8a20d LDM |
158 | --tag=disable-static) tagok=true ;; |
159 | --tag=ASM|--tag=YASM) tagok=true; passthrough=true;; | |
160 | --silent|--quiet) ;; | |
da6c0d2f LDM |
161 | *) args@<:@${#args[@]}@:>@="$arg" ;; |
162 | esac | |
163 | done | |
164 | if $modeok && $tagok ; then | |
165 | . ${top_builddir_slash}doltcompile "${args@<:@@@:>@}" | |
166 | else | |
167 | exec ${top_builddir_slash}libtool "$[]@" | |
168 | fi | |
169 | __DOLTLIBTOOL__EOF__ | |
170 | ||
171 | dnl Done writing out doltlibtool; substitute it for libtool. | |
172 | chmod +x doltlibtool | |
173 | LIBTOOL='$(top_builddir)/doltlibtool' | |
9cc8a20d LDM |
174 | |
175 | DOLT_CLEANFILES="doltlibtool doltcompile" | |
176 | AC_SUBST(DOLT_CLEANFILES) | |
177 | ]) | |
da6c0d2f LDM |
178 | AC_SUBST(LTCOMPILE) |
179 | AC_SUBST(LTCXXCOMPILE) | |
180 | # end dolt | |
181 | ]) |