| 1 |
AC_PREREQ([2.59]) |
| 2 |
AC_INIT([sandbox], [1.2.20alpha1], [sandbox@gentoo.org]) |
| 3 |
AM_INIT_AUTOMAKE |
| 4 |
AC_CONFIG_HEADER([config.h]) |
| 5 |
|
| 6 |
dnl Checks for programs. |
| 7 |
AC_PROG_CC |
| 8 |
AC_ISC_POSIX |
| 9 |
AC_PROG_INSTALL |
| 10 |
AC_PROG_MAKE_SET |
| 11 |
AC_PROG_AWK |
| 12 |
AC_CHECK_PROGS([READELF], [readelf eu-readelf], [false]) |
| 13 |
|
| 14 |
AC_ENABLE_SHARED |
| 15 |
AC_DISABLE_STATIC |
| 16 |
dnl Next four lines is a hack to prevent libtool checking for CXX/F77 |
| 17 |
m4_undefine([AC_PROG_CXX]) |
| 18 |
m4_defun([AC_PROG_CXX],[]) |
| 19 |
m4_undefine([AC_PROG_F77]) |
| 20 |
m4_defun([AC_PROG_F77],[]) |
| 21 |
AC_PROG_LIBTOOL |
| 22 |
|
| 23 |
AC_PREFIX_DEFAULT([/usr]) |
| 24 |
|
| 25 |
dnl Checks for libraries. |
| 26 |
dnl Checks for header files. |
| 27 |
AC_FUNC_ALLOCA |
| 28 |
AC_HEADER_DIRENT |
| 29 |
AC_HEADER_STDC |
| 30 |
AC_HEADER_SYS_WAIT |
| 31 |
AC_CHECK_HEADERS([ \ |
| 32 |
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 |
]) |
| 36 |
|
| 37 |
dnl Checks for typedefs, structures, and compiler characteristics. |
| 38 |
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 |
dnl Checks for library functions. |
| 45 |
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 |
AC_CHECK_FUNCS([ \ |
| 52 |
bzero ftruncate getcwd lchown memmove \ |
| 53 |
memcpy memset mkdir pathconf realpath \ |
| 54 |
rmdir setenv strcasecmp strchr strdup \ |
| 55 |
strerror strndup strrchr strspn strstr \ |
| 56 |
strtok_r \ |
| 57 |
]) |
| 58 |
dnl For librcutil |
| 59 |
AC_CHECK_FUNCS([remove]) |
| 60 |
|
| 61 |
dnl Check if gcc provides va_copy or __va_copy (for librcutil) |
| 62 |
AC_MSG_CHECKING([for va_copy]) |
| 63 |
AC_TRY_COMPILE([ |
| 64 |
#include <stdarg.h> |
| 65 |
], [ |
| 66 |
va_list ap, aq; |
| 67 |
va_copy(ap, aq); |
| 68 |
], |
| 69 |
[va_copy="va_copy"], |
| 70 |
[AC_TRY_COMPILE([ |
| 71 |
#include <stdarg.h> |
| 72 |
], [ |
| 73 |
va_list ap, aq; |
| 74 |
__va_copy(ap, aq); |
| 75 |
], |
| 76 |
[va_copy="__va_copy"], |
| 77 |
[AC_MSG_ERROR([Unable to determine name of va_copy macro])] |
| 78 |
)] |
| 79 |
) |
| 80 |
AC_MSG_RESULT([$va_copy]) |
| 81 |
if test x"$va_copy" != xva_copy ; then |
| 82 |
AC_DEFINE_UNQUOTED([va_copy], [$va_copy], |
| 83 |
[Define to name of va_copy macro proviced by gcc if its not `va_copy'.] |
| 84 |
) |
| 85 |
fi |
| 86 |
|
| 87 |
dnl Verify people aren't doing stupid shit |
| 88 |
if test x"$enable_static" != xno ; then |
| 89 |
AC_MSG_ERROR([dont be a Kumba, building a libsandbox.a is stupid]) |
| 90 |
fi |
| 91 |
if test x"$enable_shared" != xyes ; then |
| 92 |
AC_MSG_ERROR([dont be a Kumba, omitting a libsandbox.so is stupid]) |
| 93 |
fi |
| 94 |
if echo $CFLAGS | $EGREP -e -static >/dev/null 2>&1; then |
| 95 |
AC_MSG_ERROR([dont be a Kumba, using -static in CFLAGS is stupid]) |
| 96 |
fi |
| 97 |
if echo $LDFLAGS | $EGREP -e -static >/dev/null 2>&1; then |
| 98 |
AC_MSG_ERROR([dont be a Kumba, using -static in LDFLAGS is stupid]) |
| 99 |
fi |
| 100 |
|
| 101 |
dnl Some libc's like those on bsd have dlopen() in libc, and not libdl |
| 102 |
AC_CHECK_LIB([dl], [dlopen], |
| 103 |
[have_libdl="yes"], |
| 104 |
[have_libdl="no"] |
| 105 |
) |
| 106 |
if test x"$have_libdl" = xyes ; then |
| 107 |
LIBDL="-ldl" |
| 108 |
AC_SUBST([LIBDL]) |
| 109 |
DL_LIB="dl" |
| 110 |
else |
| 111 |
DL_LIB="c" |
| 112 |
AC_CHECK_LIB([c], [dlopen], |
| 113 |
[], |
| 114 |
[AC_MSG_ERROR([Unable to determine library providing dlopen])] |
| 115 |
) |
| 116 |
fi |
| 117 |
|
| 118 |
dnl uClibc doesn't currently provide dlvsym() so lets |
| 119 |
dnl verify the toolchain supports it |
| 120 |
AC_CHECK_LIB([$DL_LIB], [dlvsym], |
| 121 |
[AC_DEFINE([HAVE_DLVSYM], [1], [libdl supports dlvsym])], |
| 122 |
[AC_DEFINE([HAVE_DLVSYM], [0], [libdl does not support dlvsym])] |
| 123 |
) |
| 124 |
|
| 125 |
dnl when using libc5, (f)trucate's offset argument type is size_t with |
| 126 |
dnl libc5, but it's off_t with libc6 (glibc2). |
| 127 |
AC_MSG_CHECKING([truncate argument type]) |
| 128 |
TRUNC_ARG_TYPE=`echo '#include <unistd.h>' | $CC -E - | grep -q 'truncate.*size_t'` |
| 129 |
if test "$TRUNC_ARG_TYPE"x != x ; then |
| 130 |
AC_MSG_RESULT([size_t]) |
| 131 |
AC_DEFINE([TRUNCATE_T], [size_t], [truncate arg type]) |
| 132 |
else |
| 133 |
AC_MSG_RESULT([off_t]) |
| 134 |
AC_DEFINE([TRUNCATE_T], [off_t], [truncate arg type]) |
| 135 |
fi |
| 136 |
|
| 137 |
dnl Check if libc provides RTLD_NEXT |
| 138 |
AC_MSG_CHECKING([for RTLD_NEXT]) |
| 139 |
AC_TRY_COMPILE([ |
| 140 |
#define _GNU_SOURCE |
| 141 |
#include <dlfcn.h> |
| 142 |
], [ |
| 143 |
#if !defined(RTLD_NEXT) |
| 144 |
# error no RTLD_NEXT |
| 145 |
#endif |
| 146 |
], |
| 147 |
[have_rtld_next="yes"], |
| 148 |
[have_rtld_next="no"] |
| 149 |
) |
| 150 |
AC_MSG_RESULT([$have_rtld_next]) |
| 151 |
if test x"$have_rtld_next" = xyes ; then |
| 152 |
AC_DEFINE([HAVE_RTLD_NEXT], [1], [Have RTLD_NEXT enabled libc]) |
| 153 |
fi |
| 154 |
|
| 155 |
dnl we need to handle symbols differently based upon their version, |
| 156 |
dnl but we have to know which symbols the libc supports first |
| 157 |
AC_MSG_CHECKING([libc path]) |
| 158 |
echo "int main(void) { return 0; }" > libctest.c |
| 159 |
$CC $CFLAGS -Wl,-verbose -o libctest libctest.c &> libctest.log |
| 160 |
cat libctest.log 1>&AS_MESSAGE_LOG_FD |
| 161 |
LIBC_PATH=`$AWK '/attempt to open/ { if (($4 ~ /\/libc\.so/) && ($5 == "succeeded")) LIBC = $4; }; END {print LIBC}' libctest.log` |
| 162 |
rm -f libctest* |
| 163 |
if test x"$LIBC_PATH" = x || ! test -r "$LIBC_PATH" ; then |
| 164 |
AC_MSG_ERROR([Unable to determine LIBC PATH ($LIBC_PATH)]) |
| 165 |
fi |
| 166 |
AC_MSG_RESULT([$LIBC_PATH]) |
| 167 |
AC_SUBST([LIBC_PATH]) |
| 168 |
|
| 169 |
dnl when intercepting libc calls, we have to know the name of the |
| 170 |
dnl libc to load and search with dl*() calls |
| 171 |
AC_MSG_CHECKING([libc version]) |
| 172 |
dnl the sed script at the end here looks funny but it's ok ... |
| 173 |
dnl they're m4 escape sequences for left and right brackets |
| 174 |
echo "int main(void) { return 0; }" > libctest.c |
| 175 |
$CC -Wall -o libctest libctest.c |
| 176 |
LIBC_VERSION=`$READELF -d libctest | grep NEEDED.*libc\\.so | $AWK '{print $NF}' | sed -e 's:\@<:@::' -e 's:\@:>@::'` |
| 177 |
rm -f libctest* |
| 178 |
if test "$LIBC_VERSION"x = x ; then |
| 179 |
AC_MSG_ERROR([Unable to determine LIBC VERSION]) |
| 180 |
fi |
| 181 |
AC_MSG_RESULT([$LIBC_VERSION]) |
| 182 |
AC_DEFINE_UNQUOTED([LIBC_VERSION], ["$LIBC_VERSION"], [Name of libc to hook into]) |
| 183 |
|
| 184 |
dnl check if we have 32bit or 64bit output |
| 185 |
AC_ARG_ENABLE([multilib], |
| 186 |
AS_HELP_STRING([--enable-multilib], |
| 187 |
[enable building for multilib setups (default=disabled)]), |
| 188 |
[enable_multilib="$enableval"], |
| 189 |
[enable_multilib="no"] |
| 190 |
) |
| 191 |
|
| 192 |
if test x"$enable_multilib" != xno ; then |
| 193 |
AC_DEFINE([SB_HAVE_MULTILIB], [1], [Have multilib enabled system]) |
| 194 |
fi |
| 195 |
|
| 196 |
SANDBOX_DEFINES='-DETCDIR="\"$(sysconfdir)\"" -DLIBSANDBOX_PATH="\"$(libdir)\"" -DSANDBOX_BASHRC_PATH="\"$(pkgdatadir)\""' |
| 197 |
AC_SUBST([SANDBOX_DEFINES]) |
| 198 |
|
| 199 |
AC_OUTPUT([ |
| 200 |
Makefile |
| 201 |
scripts/Makefile |
| 202 |
etc/Makefile |
| 203 |
data/Makefile |
| 204 |
libsbutil/Makefile |
| 205 |
src/Makefile |
| 206 |
]) |
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