| 1 |
AC_PREREQ([2.61]) |
| 2 |
AC_INIT([sandbox], [1.3.1], [sandbox@gentoo.org]) |
| 3 |
sb_configure_opts="$*" |
| 4 |
AM_INIT_AUTOMAKE |
| 5 |
AC_CONFIG_HEADER([config.h]) |
| 6 |
|
| 7 |
AC_DEFINE_UNQUOTED([SANDBOX_CONFIGURE_OPTS], ["${sb_configure_opts}"], [Arguments given to ./configure]) |
| 8 |
|
| 9 |
dnl Checks for programs. |
| 10 |
AC_PROG_CC |
| 11 |
AM_PROG_CC_C_O |
| 12 |
AC_ISC_POSIX |
| 13 |
AC_PROG_INSTALL |
| 14 |
AC_PROG_MAKE_SET |
| 15 |
AC_PROG_AWK |
| 16 |
AC_CHECK_PROGS([READELF], [readelf eu-readelf], [false]) |
| 17 |
AM_MISSING_PROG([AUTOM4TE], [autom4te]) |
| 18 |
|
| 19 |
AC_ENABLE_SHARED |
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AC_DISABLE_STATIC |
| 21 |
dnl Next four lines is a hack to prevent libtool checking for CXX/F77 |
| 22 |
m4_undefine([AC_PROG_CXX]) |
| 23 |
m4_defun([AC_PROG_CXX],[]) |
| 24 |
m4_undefine([AC_PROG_F77]) |
| 25 |
m4_defun([AC_PROG_F77],[]) |
| 26 |
AC_PROG_LIBTOOL |
| 27 |
|
| 28 |
AC_PREFIX_DEFAULT([/usr]) |
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|
| 30 |
dnl Checks for libraries. |
| 31 |
dnl Checks for header files. |
| 32 |
AC_FUNC_ALLOCA |
| 33 |
AC_HEADER_DIRENT |
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AC_HEADER_STDC |
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AC_HEADER_SYS_WAIT |
| 36 |
AC_CHECK_HEADERS_ONCE([ \ |
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dirent.h \ |
| 38 |
dlfcn.h \ |
| 39 |
elf.h \ |
| 40 |
errno.h \ |
| 41 |
execinfo.h \ |
| 42 |
fcntl.h \ |
| 43 |
libgen.h \ |
| 44 |
limits.h \ |
| 45 |
memory.h \ |
| 46 |
signal.h \ |
| 47 |
stdarg.h \ |
| 48 |
stdbool.h \ |
| 49 |
stddef.h \ |
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stdio.h \ |
| 51 |
stdlib.h \ |
| 52 |
string.h \ |
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strings.h \ |
| 54 |
syscall.h \ |
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unistd.h \ |
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utime.h \ |
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sys/file.h \ |
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sys/mman.h \ |
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sys/param.h \ |
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sys/stat.h \ |
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sys/time.h \ |
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sys/types.h \ |
| 63 |
sys/wait.h \ |
| 64 |
]) |
| 65 |
|
| 66 |
dnl Checks for typedefs, structures, and compiler characteristics. |
| 67 |
AC_C_CONST |
| 68 |
AC_TYPE_UID_T |
| 69 |
AC_TYPE_MODE_T |
| 70 |
AC_TYPE_SIZE_T |
| 71 |
AC_CHECK_TYPES([ptrdiff_t]) |
| 72 |
|
| 73 |
dnl Checks for library functions. |
| 74 |
AC_FUNC_CHOWN |
| 75 |
AC_FUNC_FORK |
| 76 |
AC_FUNC_LSTAT |
| 77 |
AC_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK |
| 78 |
AC_TYPE_SIGNAL |
| 79 |
AC_FUNC_STAT |
| 80 |
AC_CHECK_FUNCS_ONCE([ \ |
| 81 |
backtrace \ |
| 82 |
ftruncate \ |
| 83 |
getcwd \ |
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lchown \ |
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memmove \ |
| 86 |
memcpy \ |
| 87 |
memset \ |
| 88 |
mkdir \ |
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pathconf \ |
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realpath \ |
| 91 |
rmdir \ |
| 92 |
setenv \ |
| 93 |
strcasecmp \ |
| 94 |
strchr \ |
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strdup \ |
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strerror \ |
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strndup \ |
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strrchr \ |
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strspn \ |
| 100 |
strstr \ |
| 101 |
strtok_r \ |
| 102 |
]) |
| 103 |
dnl For librcutil |
| 104 |
AC_CHECK_FUNCS([remove]) |
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|
| 106 |
dnl Check if gcc provides va_copy or __va_copy (for librcutil) |
| 107 |
AC_MSG_CHECKING([for va_copy]) |
| 108 |
AC_TRY_COMPILE([ |
| 109 |
#include <stdarg.h> |
| 110 |
], [ |
| 111 |
va_list ap, aq; |
| 112 |
va_copy(ap, aq); |
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], |
| 114 |
[va_copy="va_copy"], |
| 115 |
[AC_TRY_COMPILE([ |
| 116 |
#include <stdarg.h> |
| 117 |
], [ |
| 118 |
va_list ap, aq; |
| 119 |
__va_copy(ap, aq); |
| 120 |
], |
| 121 |
[va_copy="__va_copy"], |
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[AC_MSG_ERROR([Unable to determine name of va_copy macro])] |
| 123 |
)] |
| 124 |
) |
| 125 |
AC_MSG_RESULT([$va_copy]) |
| 126 |
if test x"$va_copy" != xva_copy ; then |
| 127 |
AC_DEFINE_UNQUOTED([va_copy], [$va_copy], |
| 128 |
[Define to name of va_copy macro proviced by gcc if its not `va_copy'.] |
| 129 |
) |
| 130 |
fi |
| 131 |
|
| 132 |
dnl Verify people aren't doing stupid shit |
| 133 |
if test x"$enable_static" != xno ; then |
| 134 |
AC_MSG_ERROR([dont be a Kumba, building a libsandbox.a is stupid]) |
| 135 |
fi |
| 136 |
if test x"$enable_shared" != xyes ; then |
| 137 |
AC_MSG_ERROR([dont be a Kumba, omitting a libsandbox.so is stupid]) |
| 138 |
fi |
| 139 |
if echo $CFLAGS | $EGREP -e -static >/dev/null 2>&1; then |
| 140 |
AC_MSG_ERROR([dont be a Kumba, using -static in CFLAGS is stupid]) |
| 141 |
fi |
| 142 |
if echo $LDFLAGS | $EGREP -e -static >/dev/null 2>&1; then |
| 143 |
AC_MSG_ERROR([dont be a Kumba, using -static in LDFLAGS is stupid]) |
| 144 |
fi |
| 145 |
|
| 146 |
dnl Some libc's like those on bsd have dlopen() in libc, and not libdl |
| 147 |
AC_CHECK_LIB([dl], [dlopen], |
| 148 |
[have_libdl="yes"], |
| 149 |
[have_libdl="no"] |
| 150 |
) |
| 151 |
if test x"$have_libdl" = xyes ; then |
| 152 |
LIBDL="-ldl" |
| 153 |
AC_SUBST([LIBDL]) |
| 154 |
DL_LIB="dl" |
| 155 |
else |
| 156 |
DL_LIB="c" |
| 157 |
AC_CHECK_LIB([c], [dlopen], |
| 158 |
[], |
| 159 |
[AC_MSG_ERROR([Unable to determine library providing dlopen])] |
| 160 |
) |
| 161 |
fi |
| 162 |
|
| 163 |
dnl uClibc doesn't currently provide dlvsym() so lets |
| 164 |
dnl verify the toolchain supports it |
| 165 |
AC_CHECK_LIB([$DL_LIB], [dlvsym], |
| 166 |
[AC_DEFINE([HAVE_DLVSYM], [1], [libdl supports dlvsym])], |
| 167 |
[AC_DEFINE([HAVE_DLVSYM], [0], [libdl does not support dlvsym])] |
| 168 |
) |
| 169 |
|
| 170 |
dnl when using libc5, (f)trucate's offset argument type is size_t with |
| 171 |
dnl libc5, but it's off_t with libc6 (glibc2). |
| 172 |
AC_MSG_CHECKING([truncate argument type]) |
| 173 |
TRUNC_ARG_TYPE=`echo '#include <unistd.h>' | $CC -E - | grep -q 'truncate.*size_t'` |
| 174 |
if test "$TRUNC_ARG_TYPE"x != x ; then |
| 175 |
AC_MSG_RESULT([size_t]) |
| 176 |
AC_DEFINE([TRUNCATE_T], [size_t], [truncate arg type]) |
| 177 |
else |
| 178 |
AC_MSG_RESULT([off_t]) |
| 179 |
AC_DEFINE([TRUNCATE_T], [off_t], [truncate arg type]) |
| 180 |
fi |
| 181 |
|
| 182 |
dnl Check if libc provides RTLD_NEXT |
| 183 |
AC_MSG_CHECKING([for RTLD_NEXT]) |
| 184 |
AC_TRY_COMPILE([ |
| 185 |
#define _GNU_SOURCE |
| 186 |
#include <dlfcn.h> |
| 187 |
], [ |
| 188 |
#if !defined(RTLD_NEXT) |
| 189 |
# error no RTLD_NEXT |
| 190 |
#endif |
| 191 |
], |
| 192 |
[have_rtld_next="yes"], |
| 193 |
[have_rtld_next="no"] |
| 194 |
) |
| 195 |
AC_MSG_RESULT([$have_rtld_next]) |
| 196 |
if test x"$have_rtld_next" = xyes ; then |
| 197 |
CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE" |
| 198 |
AC_DEFINE([HAVE_RTLD_NEXT], [1], [Have RTLD_NEXT enabled libc]) |
| 199 |
fi |
| 200 |
|
| 201 |
dnl we need to handle symbols differently based upon their version, |
| 202 |
dnl but we have to know which symbols the libc supports first |
| 203 |
AC_MSG_CHECKING([libc path]) |
| 204 |
echo "int main(void) { return 0; }" > libctest.c |
| 205 |
$CC $CFLAGS $CPPFLAGS $LDFLAGS -Wl,-verbose -o libctest libctest.c > libctest.log 2>&1 |
| 206 |
cat libctest.log 1>&AS_MESSAGE_LOG_FD |
| 207 |
LIBC_PATH=$( |
| 208 |
$AWK '/attempt to open/ { if (($4 ~ /\/libc\.so/) && ($5 == "succeeded")) LIBC = $4; }; END {print LIBC}' libctest.log |
| 209 |
) |
| 210 |
rm -f libctest* |
| 211 |
if test x"$LIBC_PATH" = x || ! test -r "$LIBC_PATH" ; then |
| 212 |
AC_MSG_ERROR([Unable to determine LIBC PATH ($LIBC_PATH)]) |
| 213 |
fi |
| 214 |
AC_MSG_RESULT([$LIBC_PATH]) |
| 215 |
AC_SUBST([LIBC_PATH]) |
| 216 |
|
| 217 |
dnl when intercepting libc calls, we have to know the name of the |
| 218 |
dnl libc to load and search with dl*() calls |
| 219 |
AC_MSG_CHECKING([libc version]) |
| 220 |
dnl the sed script at the end here looks funny but it's ok ... |
| 221 |
echo "int main(void) { return 0; }" > libctest.c |
| 222 |
$CC $CFLAGS $CPPFLAGS $LDFLAGS -Wall -o libctest libctest.c |
| 223 |
LIBC_VERSION=$( |
| 224 |
$READELF -d libctest | \ |
| 225 |
grep NEEDED.*libc\\.so | \ |
| 226 |
$AWK '{print $NF}' | sed -e ['s:\[::' -e 's:\]::'] |
| 227 |
) |
| 228 |
rm -f libctest* |
| 229 |
if test "$LIBC_VERSION"x = x ; then |
| 230 |
AC_MSG_ERROR([Unable to determine LIBC VERSION]) |
| 231 |
fi |
| 232 |
AC_MSG_RESULT([$LIBC_VERSION]) |
| 233 |
AC_DEFINE_UNQUOTED([LIBC_VERSION], ["$LIBC_VERSION"], [Name of libc to hook into]) |
| 234 |
|
| 235 |
dnl We add to CPPFLAGS rather than doing AC_DEFINE_UNQUOTED |
| 236 |
dnl so we dont have to worry about fully expanding all of |
| 237 |
dnl the variables ($sysconfdir defaults to "$prefix/etc") |
| 238 |
SANDBOX_DEFINES='-DETCDIR="\"$(sysconfdir)\"" -DLIBSANDBOX_PATH="\"$(libdir)\"" -DSANDBOX_BASHRC_PATH="\"$(pkgdatadir)\""' |
| 239 |
AC_SUBST([SANDBOX_DEFINES]) |
| 240 |
|
| 241 |
CPPFLAGS="$CPPFLAGS -D_REENTRANT" |
| 242 |
if test "$GCC" = yes; then |
| 243 |
CFLAGS="$CFLAGS -Wall" |
| 244 |
fi |
| 245 |
|
| 246 |
AC_CONFIG_TESTDIR([tests]) |
| 247 |
|
| 248 |
AC_OUTPUT([ |
| 249 |
Makefile |
| 250 |
scripts/Makefile |
| 251 |
etc/Makefile |
| 252 |
data/Makefile |
| 253 |
libsbutil/Makefile |
| 254 |
libsandbox/Makefile |
| 255 |
src/Makefile |
| 256 |
tests/atlocal |
| 257 |
tests/Makefile |
| 258 |
tests/package.m4 |
| 259 |
]) |
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