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Revision 238 - (hide annotations) (download)
Mon Feb 6 04:04:10 2006 UTC (8 years, 9 months ago) by vapier
File size: 4514 byte(s)
log issues with LIBC PATH a little better
1 azarah 180 AC_PREREQ([2.59])
2 azarah 229 AC_INIT([sandbox], [1.2.17], [sandbox@gentoo.org])
3 ferringb 2 AM_INIT_AUTOMAKE
4 ferringb 16 AC_CONFIG_HEADER([config.h])
5 ferringb 2
6 vapier 61 dnl Checks for programs.
7 ferringb 2 AC_PROG_CC
8 azarah 29 AC_ISC_POSIX
9     AC_PROG_INSTALL
10     AC_PROG_MAKE_SET
11     AC_PROG_AWK
12 azarah 236 AC_CHECK_PROGS([READELF], [readelf eu-readelf], [false])
13 azarah 29
14 vapier 21 AC_ENABLE_SHARED
15     AC_DISABLE_STATIC
16 vapier 61 dnl Next four lines is a hack to prevent libtool checking for CXX/F77
17 azarah 56 m4_undefine([AC_PROG_CXX])
18     m4_defun([AC_PROG_CXX],[])
19     m4_undefine([AC_PROG_F77])
20     m4_defun([AC_PROG_F77],[])
21 ferringb 2 AC_PROG_LIBTOOL
22    
23     AC_PREFIX_DEFAULT([/usr])
24 azarah 29
25 vapier 61 dnl Checks for libraries.
26     dnl Checks for header files.
27 ferringb 2 AC_FUNC_ALLOCA
28     AC_HEADER_DIRENT
29     AC_HEADER_STDC
30     AC_HEADER_SYS_WAIT
31 vapier 21 AC_CHECK_HEADERS([ \
32 azarah 234 fcntl.h limits.h memory.h stddef.h \
33     stdlib.h string.h strings.h sys/file.h \
34     sys/param.h sys/time.h unistd.h utime.h \
35 vapier 21 ])
36 ferringb 2
37 vapier 61 dnl Checks for typedefs, structures, and compiler characteristics.
38 ferringb 2 AC_C_CONST
39     AC_TYPE_UID_T
40     AC_TYPE_MODE_T
41     AC_TYPE_SIZE_T
42     AC_CHECK_TYPES([ptrdiff_t])
43    
44 vapier 61 dnl Checks for library functions.
45 ferringb 2 AC_FUNC_CHOWN
46     AC_FUNC_FORK
47     AC_FUNC_LSTAT
48     AC_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK
49     AC_TYPE_SIGNAL
50     AC_FUNC_STAT
51 vapier 21 AC_CHECK_FUNCS([ \
52 azarah 234 bzero ftruncate getcwd lchown memmove \
53     memcpy memset mkdir pathconf realpath \
54     rmdir setenv strcasecmp strchr strdup \
55     strerror strndup strrchr strspn strstr \
56 azarah 235 strtok_r \
57 vapier 21 ])
58 ferringb 2
59 azarah 218 dnl Some libc's like those on bsd have dlopen() in libc, and not libdl
60     AC_CHECK_LIB([dl], [dlopen],
61 azarah 234 [have_libdl="yes"],
62     [have_libdl="no"]
63 azarah 218 )
64     if test x"$have_libdl" = xyes ; then
65 azarah 234 LIBDL="-ldl"
66     AC_SUBST([LIBDL])
67     DL_LIB="dl"
68 azarah 218 else
69 azarah 234 DL_LIB="c"
70     AC_CHECK_LIB([c], [dlopen],
71     [],
72     [AC_MSG_ERROR([Unable to determine library providing dlopen])]
73     )
74 azarah 218 fi
75    
76 vapier 62 dnl uClibc doesn't currently provide dlvsym() so lets
77     dnl verify the toolchain supports it
78 azarah 218 AC_CHECK_LIB([$DL_LIB], [dlvsym],
79 azarah 234 [AC_DEFINE([HAVE_DLVSYM], [1], [libdl supports dlvsym])],
80     [AC_DEFINE([HAVE_DLVSYM], [0], [libdl does not support dlvsym])]
81 vapier 62 )
82    
83 vapier 23 dnl when using libc5, (f)trucate's offset argument type is size_t with
84     dnl libc5, but it's off_t with libc6 (glibc2).
85 azarah 180 AC_MSG_CHECKING([truncate argument type])
86     TRUNC_ARG_TYPE=`echo '#include <unistd.h>' | $CC -E - | grep -q 'truncate.*size_t'`
87     if test "$TRUNC_ARG_TYPE"x != x ; then
88 azarah 234 AC_MSG_RESULT([size_t])
89     AC_DEFINE([TRUNCATE_T], [size_t], [truncate arg type])
90 vapier 23 else
91 azarah 234 AC_MSG_RESULT([off_t])
92     AC_DEFINE([TRUNCATE_T], [off_t], [truncate arg type])
93 vapier 23 fi
94    
95 azarah 220 dnl Check if libc provides RTLD_NEXT
96     AC_MSG_CHECKING([for RTLD_NEXT])
97 azarah 216 AC_TRY_COMPILE([
98 azarah 234 #define _GNU_SOURCE
99     #include <dlfcn.h>
100     ], [
101     #if !defined(RTLD_NEXT)
102     # error no RTLD_NEXT
103     #endif
104     ],
105     [have_rtld_next="yes"],
106     [have_rtld_next="no"]
107 azarah 217 )
108 azarah 220 AC_MSG_RESULT([$have_rtld_next])
109 azarah 235 if test x"$have_rtld_next" = xyes ; then
110     AC_DEFINE([HAVE_RTLD_NEXT], [1], [Have RTLD_NEXT enabled libc])
111     fi
112 azarah 216
113 vapier 53 dnl we need to handle symbols differently based upon their version,
114     dnl but we have to know which symbols the libc supports first
115 azarah 180 AC_MSG_CHECKING([libc path])
116 vapier 23 echo "int main(void) { return 0; }" > libctest.c
117 vapier 238 $CC $CFLAGS -Wl,-verbose -o libctest libctest.c &> libctest.log
118     cat libctest.log 1>&AS_MESSAGE_LOG_FD
119     LIBC_PATH=`$AWK '/attempt to open/ { if (($4 ~ /\/libc\.so/) && ($5 == "succeeded")) LIBC = $4; }; END {print LIBC}' libctest.log`
120 azarah 234 rm -f libctest*
121 azarah 215 if test "$LIBC_PATH"x = x || ! test -r "$LIBC_PATH"; then
122 vapier 238 AC_MSG_ERROR([Unable to determine LIBC PATH ($LIBC_PATH)])
123 vapier 53 fi
124 azarah 180 AC_MSG_RESULT([$LIBC_PATH])
125     AC_SUBST([LIBC_PATH])
126 vapier 23
127 vapier 53 dnl when intercepting libc calls, we have to know the name of the
128     dnl libc to load and search with dl*() calls
129 azarah 180 AC_MSG_CHECKING([libc version])
130 vapier 53 dnl the sed script at the end here looks funny but it's ok ...
131     dnl they're m4 escape sequences for left and right brackets
132 azarah 234 echo "int main(void) { return 0; }" > libctest.c
133     $CC -Wall -o libctest libctest.c
134 vapier 53 LIBC_VERSION=`readelf -d libctest | grep NEEDED.*libc\\.so | $AWK '{print $NF}' | sed -e 's:\@<:@::' -e 's:\@:>@::'`
135 azarah 234 rm -f libctest*
136 vapier 53 if test "$LIBC_VERSION"x = x ; then
137 azarah 234 AC_MSG_ERROR([Unable to determine LIBC VERSION])
138 vapier 53 fi
139 azarah 180 AC_MSG_RESULT([$LIBC_VERSION])
140 azarah 233 AC_DEFINE_UNQUOTED([LIBC_VERSION], ["$LIBC_VERSION"], [Name of libc to hook into])
141 vapier 53
142 azarah 179 dnl check if we have 32bit or 64bit output
143 azarah 181 AC_ARG_ENABLE([multilib],
144 azarah 234 AS_HELP_STRING([--enable-multilib],
145     [enable building for multilib setups (default=disabled)]),
146     [enable_multilib="$enableval"],
147     [enable_multilib="no"]
148 azarah 181 )
149    
150 azarah 216 if test x"$enable_multilib" != xno ; then
151 azarah 234 AC_DEFINE([SB_HAVE_MULTILIB], [1], [Have multilib enabled system])
152 azarah 179 fi
153    
154 azarah 183 AC_OUTPUT([
155 azarah 234 Makefile
156     scripts/Makefile
157     data/Makefile
158     src/Makefile
159 azarah 183 ])

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