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Revision 220 - (hide annotations) (download)
Mon Dec 5 10:10:47 2005 UTC (8 years, 10 months ago) by azarah
File size: 4305 byte(s)
Rather check for RTLD_NEXT than glibc.  Some other cleanups.
1 azarah 180 AC_PREREQ([2.59])
2 azarah 209 AC_INIT([sandbox], [1.2.16], [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 183 AC_CHECK_PROGS([READELF], [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 180 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 180 bzero ftruncate getcwd lchown memmove \
53     mempcpy memset mkdir pathconf realpath \
54     rmdir setenv strcasecmp strchr strdup \
55     strerror strndup strrchr strspn strstr \
56 vapier 21 ])
57 ferringb 2
58 azarah 218 dnl Some libc's like those on bsd have dlopen() in libc, and not libdl
59     AC_CHECK_LIB([dl], [dlopen],
60     [have_libdl="yes"],
61     [have_libdl="no"]
62     )
63     if test x"$have_libdl" = xyes ; then
64     LIBDL="-ldl"
65     AC_SUBST([LIBDL])
66     DL_LIB="dl"
67     else
68     DL_LIB="c"
69     AC_CHECK_LIB([c], [dlopen],
70     [],
71     [AC_MSG_ERROR([Unable to determine library providing dlopen])]
72     )
73     fi
74    
75 vapier 62 dnl uClibc doesn't currently provide dlvsym() so lets
76     dnl verify the toolchain supports it
77 azarah 218 AC_CHECK_LIB([$DL_LIB], [dlvsym],
78 azarah 180 [AC_DEFINE([HAVE_DLVSYM], [1], [libdl supports dlvsym])],
79     [AC_DEFINE([HAVE_DLVSYM], [0], [libdl does not support dlvsym])]
80 vapier 62 )
81    
82 vapier 23 dnl when using libc5, (f)trucate's offset argument type is size_t with
83     dnl libc5, but it's off_t with libc6 (glibc2).
84 azarah 180 AC_MSG_CHECKING([truncate argument type])
85     TRUNC_ARG_TYPE=`echo '#include <unistd.h>' | $CC -E - | grep -q 'truncate.*size_t'`
86     if test "$TRUNC_ARG_TYPE"x != x ; then
87     AC_MSG_RESULT([size_t])
88     AC_DEFINE([TRUNCATE_T], [size_t], [truncate arg type])
89 vapier 23 else
90 azarah 180 AC_MSG_RESULT([off_t])
91     AC_DEFINE([TRUNCATE_T], [off_t], [truncate arg type])
92 vapier 23 fi
93    
94 azarah 220 dnl Check if libc provides RTLD_NEXT
95     AC_MSG_CHECKING([for RTLD_NEXT])
96 azarah 216 AC_TRY_COMPILE([
97 azarah 220 #define _GNU_SOURCE
98     #include <dlfcn.h>
99 azarah 216 ], [
100 azarah 220 #if !defined(RTLD_NEXT)
101     # error no RTLD_NEXT
102 azarah 216 #endif
103    
104 azarah 220 int
105     main (void)
106 azarah 216 {
107     return 0;
108     }
109 azarah 217 ],
110 azarah 220 [have_rtld_next="yes"],
111     [have_rtld_next="no"]
112 azarah 217 )
113 azarah 220 AC_MSG_RESULT([$have_rtld_next])
114     AM_CONDITIONAL([HAVE_RTLD_NEXT], [test x"$have_rtld_next" = xyes])
115 azarah 216
116 vapier 53 dnl we need to handle symbols differently based upon their version,
117     dnl but we have to know which symbols the libc supports first
118 azarah 180 AC_MSG_CHECKING([libc path])
119 vapier 23 echo "int main(void) { return 0; }" > libctest.c
120 vapier 53 $CC -Wall -o libctest libctest.c
121     LIBC_PATH=`$CC $CFLAGS -Wl,-verbose -o libctest libctest.c 2>&1 | \
122 vapier 55 $AWK '/attempt to open/ { if (($4 ~ /libc\.so/) && ($5 == "succeeded")) LIBC = $4; }; END {print LIBC}'`
123 azarah 75 rm -f libctest.c
124 azarah 215 if test "$LIBC_PATH"x = x || ! test -r "$LIBC_PATH"; then
125 azarah 180 AC_MSG_ERROR([Unable to determine LIBC PATH])
126 vapier 53 fi
127 azarah 180 AC_MSG_RESULT([$LIBC_PATH])
128     AC_SUBST([LIBC_PATH])
129 vapier 23
130 vapier 53 dnl when intercepting libc calls, we have to know the name of the
131     dnl libc to load and search with dl*() calls
132 azarah 180 AC_MSG_CHECKING([libc version])
133 vapier 53 dnl the sed script at the end here looks funny but it's ok ...
134     dnl they're m4 escape sequences for left and right brackets
135     LIBC_VERSION=`readelf -d libctest | grep NEEDED.*libc\\.so | $AWK '{print $NF}' | sed -e 's:\@<:@::' -e 's:\@:>@::'`
136     if test "$LIBC_VERSION"x = x ; then
137 azarah 180 AC_MSG_ERROR([Unable to determine LIBC VERSION])
138 vapier 53 fi
139 azarah 181 rm -f libctest
140 azarah 180 AC_MSG_RESULT([$LIBC_VERSION])
141     AC_DEFINE_UNQUOTED([LIBC_VERSION], ["$LIBC_VERSION"], [name of libc to hook into])
142 vapier 53
143 azarah 179 dnl check if we have 32bit or 64bit output
144 azarah 181 AC_ARG_ENABLE([multilib],
145     AS_HELP_STRING([--enable-multilib],
146     [enable building for multilib setups (default=disabled)]),
147     [enable_multilib="$enableval"],
148     [enable_multilib="no"]
149     )
150    
151 azarah 216 if test x"$enable_multilib" != xno ; then
152 azarah 181 AC_DEFINE_UNQUOTED([SB_HAVE_MULTILIB], [1], [have multilib enabled system])
153 azarah 179 fi
154    
155 azarah 183 AC_OUTPUT([
156     Makefile
157     scripts/Makefile
158     data/Makefile
159     src/Makefile
160     ])

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