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AC_PREREQ([2.61])
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| 2 |
AC_INIT([sandbox], [1.3.1], [sandbox@gentoo.org])
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| 3 |
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| 4 |
AC_MSG_ERROR([SVN is dead, use GIT: http://git.overlays.gentoo.org/gitweb/?p=proj/sandbox.git;a=summary])
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sb_configure_opts="$*"
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AM_INIT_AUTOMAKE
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AC_CONFIG_HEADER([config.h])
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AC_DEFINE_UNQUOTED([SANDBOX_CONFIGURE_OPTS], ["${sb_configure_opts}"], [Arguments given to ./configure])
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dnl Checks for programs.
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AC_PROG_CC
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AM_PROG_CC_C_O
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AC_ISC_POSIX
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AC_PROG_INSTALL
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AC_PROG_MAKE_SET
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AC_PROG_AWK
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AC_CHECK_PROGS([READELF], [readelf eu-readelf], [false])
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AM_MISSING_PROG([AUTOM4TE], [autom4te])
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AC_ENABLE_SHARED
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AC_DISABLE_STATIC
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dnl Next four lines is a hack to prevent libtool checking for CXX/F77
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m4_undefine([AC_PROG_CXX])
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m4_defun([AC_PROG_CXX],[])
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m4_undefine([AC_PROG_F77])
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m4_defun([AC_PROG_F77],[])
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AC_PROG_LIBTOOL
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AC_PREFIX_DEFAULT([/usr])
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dnl this test fills up the stack and then triggers a segfault ...
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dnl but it's hard to wrap things without a stack, so let's ignore
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dnl this test for now ...
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ac_cv_header_sigsegv_h=no
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ac_cv_lib_sigsegv_stackoverflow_install_handler=false
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dnl Checks for libraries.
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dnl Checks for header files.
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AC_FUNC_ALLOCA
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AC_HEADER_DIRENT
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AC_HEADER_STDC
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AC_HEADER_SYS_WAIT
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AC_CHECK_HEADERS_ONCE([ \
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dirent.h \
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dlfcn.h \
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elf.h \
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errno.h \
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execinfo.h \
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fcntl.h \
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libgen.h \
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limits.h \
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memory.h \
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signal.h \
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sigsegv.h \
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stdarg.h \
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stdbool.h \
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stddef.h \
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stdio.h \
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stdlib.h \
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string.h \
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strings.h \
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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 \
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sys/wait.h \
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])
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dnl Checks for typedefs, structures, and compiler characteristics.
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AC_C_CONST
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AC_TYPE_UID_T
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AC_TYPE_MODE_T
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AC_TYPE_SIZE_T
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AC_CHECK_TYPES([ptrdiff_t])
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dnl Checks for library functions.
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AC_FUNC_CHOWN
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AC_FUNC_FORK
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AC_FUNC_LSTAT
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AC_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK
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AC_TYPE_SIGNAL
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AC_FUNC_STAT
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AC_CHECK_FUNCS_ONCE([ \
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backtrace \
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ftruncate \
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getcwd \
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lchown \
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memmove \
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memcpy \
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memset \
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mkdir \
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pathconf \
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realpath \
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remove \
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rmdir \
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setenv \
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strcasecmp \
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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 \
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strstr \
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strtok_r \
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])
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AC_CHECK_LIB([sigsegv], [stackoverflow_install_handler],
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[HAVE_LIBSIGSEGV=true],
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[HAVE_LIBSIGSEGV=false])
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AM_CONDITIONAL(HAVE_LIBSIGSEGV, $HAVE_LIBSIGSEGV)
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dnl Check if gcc provides va_copy or __va_copy (for librcutil)
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AC_MSG_CHECKING([for va_copy])
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AC_TRY_COMPILE([
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#include <stdarg.h>
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], [
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va_list ap, aq;
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va_copy(ap, aq);
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],
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[va_copy="va_copy"],
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[AC_TRY_COMPILE([
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#include <stdarg.h>
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], [
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va_list ap, aq;
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__va_copy(ap, aq);
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],
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[va_copy="__va_copy"],
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[AC_MSG_ERROR([Unable to determine name of va_copy macro])]
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)]
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)
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AC_MSG_RESULT([$va_copy])
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if test x"$va_copy" != xva_copy ; then
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AC_DEFINE_UNQUOTED([va_copy], [$va_copy],
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[Define to name of va_copy macro proviced by gcc if its not `va_copy'.]
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)
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fi
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dnl Verify people aren't doing stupid shit
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if test x"$enable_static" != xno ; then
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AC_MSG_ERROR([dont be a Kumba, building a libsandbox.a is stupid])
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fi
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if test x"$enable_shared" != xyes ; then
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AC_MSG_ERROR([dont be a Kumba, omitting a libsandbox.so is stupid])
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fi
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if echo $CFLAGS | $EGREP -e -static >/dev/null 2>&1; then
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AC_MSG_ERROR([dont be a Kumba, using -static in CFLAGS is stupid])
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fi
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if echo $LDFLAGS | $EGREP -e -static >/dev/null 2>&1; then
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AC_MSG_ERROR([dont be a Kumba, using -static in LDFLAGS is stupid])
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fi
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dnl Some libc's like those on bsd have dlopen() in libc, and not libdl
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AC_CHECK_LIB([dl], [dlopen],
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[have_libdl="yes"],
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[have_libdl="no"]
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)
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if test x"$have_libdl" = xyes ; then
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LIBDL="-ldl"
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AC_SUBST([LIBDL])
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DL_LIB="dl"
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else
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DL_LIB="c"
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AC_CHECK_LIB([c], [dlopen],
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[],
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[AC_MSG_ERROR([Unable to determine library providing dlopen])]
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)
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fi
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dnl uClibc doesn't currently provide dlvsym() so lets
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dnl verify the toolchain supports it
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AC_CHECK_LIB([$DL_LIB], [dlvsym],
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[AC_DEFINE([HAVE_DLVSYM], [1], [libdl supports dlvsym])],
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[AC_DEFINE([HAVE_DLVSYM], [0], [libdl does not support dlvsym])]
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)
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dnl when using libc5, (f)trucate's offset argument type is size_t with
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dnl libc5, but it's off_t with libc6 (glibc2).
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AC_MSG_CHECKING([truncate argument type])
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TRUNC_ARG_TYPE=`echo '#include <unistd.h>' | $CC -E - | grep -q 'truncate.*size_t'`
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if test "$TRUNC_ARG_TYPE"x != x ; then
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AC_MSG_RESULT([size_t])
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AC_DEFINE([TRUNCATE_T], [size_t], [truncate arg type])
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else
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AC_MSG_RESULT([off_t])
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AC_DEFINE([TRUNCATE_T], [off_t], [truncate arg type])
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fi
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dnl Check if libc provides RTLD_NEXT
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AC_MSG_CHECKING([for RTLD_NEXT])
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AC_TRY_COMPILE([
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#define _GNU_SOURCE
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#include <dlfcn.h>
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], [
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#if !defined(RTLD_NEXT)
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# error no RTLD_NEXT
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#endif
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],
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[have_rtld_next="yes"],
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[have_rtld_next="no"]
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)
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AC_MSG_RESULT([$have_rtld_next])
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if test x"$have_rtld_next" = xyes ; then
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CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE"
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AC_DEFINE([HAVE_RTLD_NEXT], [1], [Have RTLD_NEXT enabled libc])
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fi
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dnl we need to handle symbols differently based upon their version,
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dnl but we have to know which symbols the libc supports first
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AC_MSG_CHECKING([libc path])
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echo "int main(void) { return 0; }" > libctest.c
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$CC $CFLAGS $CPPFLAGS $LDFLAGS -Wl,-verbose -o libctest libctest.c > libctest.log 2>&1
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cat libctest.log 1>&AS_MESSAGE_LOG_FD
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LIBC_PATH=$(
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$AWK '/attempt to open/ { if (($4 ~ /\/libc\.so/) && ($5 == "succeeded")) LIBC = $4; }; END {print LIBC}' libctest.log
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)
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| 223 |
rm -f libctest*
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if test x"$LIBC_PATH" = x || ! test -r "$LIBC_PATH" ; then
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AC_MSG_ERROR([Unable to determine LIBC PATH ($LIBC_PATH)])
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fi
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AC_MSG_RESULT([$LIBC_PATH])
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AC_SUBST([LIBC_PATH])
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dnl when intercepting libc calls, we have to know the name of the
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dnl libc to load and search with dl*() calls
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AC_MSG_CHECKING([libc version])
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dnl the sed script at the end here looks funny but it's ok ...
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echo "int main(void) { return 0; }" > libctest.c
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$CC $CFLAGS $CPPFLAGS $LDFLAGS -Wall -o libctest libctest.c
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LIBC_VERSION=$(
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$READELF -d libctest | \
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grep NEEDED.*libc\\.so | \
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$AWK '{print $NF}' | sed -e ['s:\[::' -e 's:\]::']
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)
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| 241 |
rm -f libctest*
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| 242 |
if test "$LIBC_VERSION"x = x ; then
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| 243 |
AC_MSG_ERROR([Unable to determine LIBC VERSION])
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fi
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| 245 |
AC_MSG_RESULT([$LIBC_VERSION])
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AC_DEFINE_UNQUOTED([LIBC_VERSION], ["$LIBC_VERSION"], [Name of libc to hook into])
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| 248 |
dnl We add to CPPFLAGS rather than doing AC_DEFINE_UNQUOTED
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| 249 |
dnl so we dont have to worry about fully expanding all of
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| 250 |
dnl the variables ($sysconfdir defaults to "$prefix/etc")
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| 251 |
SANDBOX_DEFINES='-DETCDIR="\"$(sysconfdir)\"" -DLIBSANDBOX_PATH="\"$(libdir)\"" -DSANDBOX_BASHRC_PATH="\"$(pkgdatadir)\""'
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AC_SUBST([SANDBOX_DEFINES])
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| 254 |
CPPFLAGS="$CPPFLAGS -D_REENTRANT"
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| 255 |
if test "$GCC" = yes; then
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| 256 |
CFLAGS="$CFLAGS -Wall"
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fi
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| 259 |
AC_CONFIG_TESTDIR([tests])
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| 261 |
AC_OUTPUT([
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| 262 |
Makefile
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| 263 |
scripts/Makefile
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| 264 |
etc/Makefile
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data/Makefile
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libsbutil/Makefile
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libsandbox/Makefile
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| 268 |
src/Makefile
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| 269 |
tests/atlocal
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tests/Makefile
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| 271 |
tests/package.m4
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| 272 |
])
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