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comparison config/depstand.m4 @ 0:a06113de4d67

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author kent <kent@cr.ie.u-ryukyu.ac.jp>
date Fri, 17 Jul 2009 14:47:48 +0900
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-1:000000000000 0:a06113de4d67
1 ## -*- Autoconf -*-
2
3 # Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007
4 # Free Software Foundation, Inc.
5 #
6 # This file is free software; the Free Software Foundation
7 # gives unlimited permission to copy and/or distribute it,
8 # with or without modifications, as long as this notice is preserved.
9
10 # serial 8
11
12 # Based on depend.m4 from automake 1.9, modified for standalone use in
13 # an environment where GNU make is required.
14
15 # ZW_PROG_COMPILER_DEPENDENCIES
16 # -----------------------------
17 # Variant of _AM_DEPENDENCIES which just does the dependency probe and
18 # sets fooDEPMODE accordingly. Cache-variable compatible with
19 # original; not side-effect compatible. As the users of this macro
20 # may require accurate dependencies for correct builds, it does *not*
21 # honor --disable-dependency-checking, and failure to detect a usable
22 # method is an error. depcomp is assumed to be located in
23 # $ac_aux_dir.
24 #
25 # FIXME: Should use the Autoconf 2.5x language-selection mechanism.
26
27 AC_DEFUN([ZW_PROG_COMPILER_DEPENDENCIES],
28 [ifelse([$1], CC, [depcc="$CC" am_compiler_list=],
29 [$1], CXX, [depcc="$CXX" am_compiler_list=],
30 [$1], OBJC, [depcc="$OBJC" am_compiler_list='gcc3 gcc'],
31 [$1], GCJ, [depcc="$GCJ" am_compiler_list='gcc3 gcc'],
32 [depcc="$$1" am_compiler_list=])
33
34 am_depcomp=$ac_aux_dir/depcomp
35 AC_CACHE_CHECK([dependency style of $depcc],
36 [am_cv_$1_dependencies_compiler_type],
37 [if test -f "$am_depcomp"; then
38 # We make a subdir and do the tests there. Otherwise we can end up
39 # making bogus files that we don't know about and never remove. For
40 # instance it was reported that on HP-UX the gcc test will end up
41 # making a dummy file named `D' -- because `-MD' means `put the output
42 # in D'.
43 mkdir conftest.dir
44 # Copy depcomp to subdir because otherwise we won't find it if we're
45 # using a relative directory.
46 cp "$am_depcomp" conftest.dir
47 cd conftest.dir
48 # We will build objects and dependencies in a subdirectory because
49 # it helps to detect inapplicable dependency modes. For instance
50 # both Tru64's cc and ICC support -MD to output dependencies as a
51 # side effect of compilation, but ICC will put the dependencies in
52 # the current directory while Tru64 will put them in the object
53 # directory.
54 mkdir sub
55
56 am_cv_$1_dependencies_compiler_type=none
57 if test "$am_compiler_list" = ""; then
58 am_compiler_list=`sed -n ['s/^\([a-zA-Z0-9]*\))$/\1/p'] < ./depcomp`
59 fi
60 for depmode in $am_compiler_list; do
61 if test $depmode = none; then break; fi
62
63 _AS_ECHO([$as_me:$LINENO: trying $depmode], AS_MESSAGE_LOG_FD)
64 # Setup a source with many dependencies, because some compilers
65 # like to wrap large dependency lists on column 80 (with \), and
66 # we should not choose a depcomp mode which is confused by this.
67 #
68 # We need to recreate these files for each test, as the compiler may
69 # overwrite some of them when testing with obscure command lines.
70 # This happens at least with the AIX C compiler.
71 : > sub/conftest.c
72 for i in 1 2 3 4 5 6; do
73 echo '#include "conftst'$i'.h"' >> sub/conftest.c
74 # Using `: > sub/conftst$i.h' creates only sub/conftst1.h with
75 # Solaris 8's {/usr,}/bin/sh.
76 touch sub/conftst$i.h
77 done
78 echo "include sub/conftest.Po" > confmf
79
80 # We check with `-c' and `-o' for the sake of the "dashmstdout"
81 # mode. It turns out that the SunPro C++ compiler does not properly
82 # handle `-M -o', and we need to detect this.
83 depcmd="depmode=$depmode \
84 source=sub/conftest.c object=sub/conftest.${OBJEXT-o} \
85 depfile=sub/conftest.Po tmpdepfile=sub/conftest.TPo \
86 $SHELL ./depcomp $depcc -c -o sub/conftest.${OBJEXT-o} sub/conftest.c"
87 echo "| $depcmd" | sed -e 's/ */ /g' >&AS_MESSAGE_LOG_FD
88 if env $depcmd > conftest.err 2>&1 &&
89 grep sub/conftst6.h sub/conftest.Po >>conftest.err 2>&1 &&
90 grep sub/conftest.${OBJEXT-o} sub/conftest.Po >>conftest.err 2>&1 &&
91 ${MAKE-make} -s -f confmf >>conftest.err 2>&1; then
92 # icc doesn't choke on unknown options, it will just issue warnings
93 # or remarks (even with -Werror). So we grep stderr for any message
94 # that says an option was ignored or not supported.
95 # When given -MP, icc 7.0 and 7.1 complain thusly:
96 # icc: Command line warning: ignoring option '-M'; no argument required
97 # The diagnosis changed in icc 8.0:
98 # icc: Command line remark: option '-MP' not supported
99 if (grep 'ignoring option' conftest.err ||
100 grep 'not supported' conftest.err) >/dev/null 2>&1; then :; else
101 am_cv_$1_dependencies_compiler_type=$depmode
102 _AS_ECHO([$as_me:$LINENO: success], AS_MESSAGE_LOG_FD)
103 break
104 fi
105 fi
106 _AS_ECHO([$as_me:$LINENO: failure, diagnostics are:], AS_MESSAGE_LOG_FD)
107 sed -e 's/^/| /' < conftest.err >&AS_MESSAGE_LOG_FD
108 done
109
110 cd ..
111 rm -rf conftest.dir
112 else
113 am_cv_$1_dependencies_compiler_type=none
114 fi
115 ])
116 if test x${am_cv_$1_dependencies_compiler_type-none} = xnone
117 then AC_MSG_ERROR([no usable dependency style found])
118 else AC_SUBST([$1DEPMODE], [depmode=$am_cv_$1_dependencies_compiler_type])
119 fi
120 ])
121
122 # AM_SET_DEPDIR
123 # -------------
124 # Choose a directory name for dependency files.
125 AC_DEFUN([AM_SET_DEPDIR],
126 [AC_REQUIRE([AM_SET_LEADING_DOT])dnl
127 AC_SUBST([DEPDIR], ["${am__leading_dot}deps"])dnl
128 ])
129
130 # ZW_CREATE_DEPDIR
131 # ----------------
132 # As AM_SET_DEPDIR, but also create the directory at config.status time.
133 AC_DEFUN([ZW_CREATE_DEPDIR],
134 [AC_REQUIRE([AM_SET_DEPDIR])dnl
135 AC_CONFIG_COMMANDS([depdir], [$SHELL $ac_aux_dir/mkinstalldirs $DEPDIR],
136 [ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
137 ])