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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. | |
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> | |
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 $host in | |
25 | i?86-*-linux*|x86_64-*-linux*|powerpc-*-linux*) ;; | |
26 | amd64-*-freebsd*|i?86-*-freebsd*|ia64-*-freebsd*) ;; | |
27 | *) dolt_supported=no ;; | |
28 | esac | |
29 | if test x$dolt_supported = xno ; then | |
30 | AC_MSG_RESULT([no, falling back to libtool]) | |
31 | LTCOMPILE='$(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(COMPILE)' | |
32 | LTCXXCOMPILE='$(LIBTOOL) --tag=CXX $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CXXCOMPILE)' | |
33 | else | |
34 | AC_MSG_RESULT([yes, replacing libtool]) | |
35 | ||
36 | dnl Start writing out doltcompile. | |
37 | cat <<__DOLTCOMPILE__EOF__ >doltcompile | |
38 | #!$DOLT_BASH | |
39 | __DOLTCOMPILE__EOF__ | |
40 | cat <<'__DOLTCOMPILE__EOF__' >>doltcompile | |
41 | args=("$[]@") | |
42 | for ((arg=0; arg<${#args@<:@@@:>@}; arg++)) ; do | |
43 | if test x"${args@<:@$arg@:>@}" = x-o ; then | |
44 | objarg=$((arg+1)) | |
45 | break | |
46 | fi | |
47 | done | |
48 | if test x$objarg = x ; then | |
49 | echo 'Error: no -o on compiler command line' 1>&2 | |
50 | exit 1 | |
51 | fi | |
52 | lo="${args@<:@$objarg@:>@}" | |
53 | obj="${lo%.lo}" | |
54 | if test x"$lo" = x"$obj" ; then | |
55 | echo "Error: libtool object file name \"$lo\" does not end in .lo" 1>&2 | |
56 | exit 1 | |
57 | fi | |
58 | objbase="${obj##*/}" | |
59 | __DOLTCOMPILE__EOF__ | |
60 | ||
61 | dnl Write out shared compilation code. | |
62 | if test x$enable_shared = xyes; then | |
63 | cat <<'__DOLTCOMPILE__EOF__' >>doltcompile | |
64 | libobjdir="${obj%$objbase}.libs" | |
65 | if test ! -d "$libobjdir" ; then | |
66 | mkdir_out="$(mkdir "$libobjdir" 2>&1)" | |
67 | mkdir_ret=$? | |
68 | if test "$mkdir_ret" -ne 0 && test ! -d "$libobjdir" ; then | |
69 | echo "$mkdir_out" 1>&2 | |
70 | exit $mkdir_ret | |
71 | fi | |
72 | fi | |
73 | pic_object="$libobjdir/$objbase.o" | |
74 | args@<:@$objarg@:>@="$pic_object" | |
75 | "${args@<:@@@:>@}" -fPIC -DPIC || exit $? | |
76 | __DOLTCOMPILE__EOF__ | |
77 | fi | |
78 | ||
79 | dnl Write out static compilation code. | |
80 | dnl Avoid duplicate compiler output if also building shared objects. | |
81 | if test x$enable_static = xyes; then | |
82 | cat <<'__DOLTCOMPILE__EOF__' >>doltcompile | |
83 | non_pic_object="$obj.o" | |
84 | args@<:@$objarg@:>@="$non_pic_object" | |
85 | __DOLTCOMPILE__EOF__ | |
86 | if test x$enable_shared = xyes; then | |
87 | cat <<'__DOLTCOMPILE__EOF__' >>doltcompile | |
88 | "${args@<:@@@:>@}" >/dev/null 2>&1 || exit $? | |
89 | __DOLTCOMPILE__EOF__ | |
90 | else | |
91 | cat <<'__DOLTCOMPILE__EOF__' >>doltcompile | |
92 | "${args@<:@@@:>@}" || exit $? | |
93 | __DOLTCOMPILE__EOF__ | |
94 | fi | |
95 | fi | |
96 | ||
97 | dnl Write out the code to write the .lo file. | |
98 | dnl The second line of the .lo file must match "^# Generated by .*libtool" | |
99 | cat <<'__DOLTCOMPILE__EOF__' >>doltcompile | |
100 | { | |
101 | echo "# $lo - a libtool object file" | |
102 | echo "# Generated by doltcompile, not libtool" | |
103 | __DOLTCOMPILE__EOF__ | |
104 | ||
105 | if test x$enable_shared = xyes; then | |
106 | cat <<'__DOLTCOMPILE__EOF__' >>doltcompile | |
107 | echo "pic_object='$pic_object'" | |
108 | __DOLTCOMPILE__EOF__ | |
109 | else | |
110 | cat <<'__DOLTCOMPILE__EOF__' >>doltcompile | |
111 | echo pic_object=none | |
112 | __DOLTCOMPILE__EOF__ | |
113 | fi | |
114 | ||
115 | if test x$enable_static = xyes; then | |
116 | cat <<'__DOLTCOMPILE__EOF__' >>doltcompile | |
117 | echo "non_pic_object='$non_pic_object'" | |
118 | __DOLTCOMPILE__EOF__ | |
119 | else | |
120 | cat <<'__DOLTCOMPILE__EOF__' >>doltcompile | |
121 | echo non_pic_object=none | |
122 | __DOLTCOMPILE__EOF__ | |
123 | fi | |
124 | ||
125 | cat <<'__DOLTCOMPILE__EOF__' >>doltcompile | |
126 | } > "$lo" | |
127 | __DOLTCOMPILE__EOF__ | |
128 | ||
129 | dnl Done writing out doltcompile; substitute it for libtool compilation. | |
130 | chmod +x doltcompile | |
131 | LTCOMPILE='$(top_builddir)/doltcompile $(COMPILE)' | |
132 | LTCXXCOMPILE='$(top_builddir)/doltcompile $(CXXCOMPILE)' | |
133 | fi | |
134 | AC_SUBST(LTCOMPILE) | |
135 | AC_SUBST(LTCXXCOMPILE) | |
136 | # end dolt | |
137 | ]) |