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AC_PREREQ(2.59) |
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AC_INIT(sandbox, 1.2.11, dev-portage@gentoo.org) |
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AM_INIT_AUTOMAKE |
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AC_CONFIG_HEADER([config.h]) |
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|
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dnl Checks for programs. |
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AC_PROG_CC |
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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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|
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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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|
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AC_PREFIX_DEFAULT([/usr]) |
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|
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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([ \ |
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fcntl.h limits.h memory.h stddef.h \ |
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stdlib.h string.h strings.h sys/file.h \ |
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sys/param.h sys/time.h unistd.h utime.h \ |
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]) |
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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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|
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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_FUNC_MALLOC |
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AC_FUNC_REALLOC |
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AC_TYPE_SIGNAL |
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AC_FUNC_STAT |
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AC_CHECK_FUNCS([ \ |
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bzero ftruncate getcwd lchown memmove \ |
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mempcpy memset mkdir pathconf realpath \ |
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rmdir setenv strcasecmp strchr strdup \ |
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strerror strndup strrchr strspn strstr \ |
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]) |
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|
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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, 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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|
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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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if echo '#include <unistd.h>' | $CC -E - | grep -q 'truncate.*size_t' ; then |
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AC_MSG_RESULT(size_t) |
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AC_DEFINE(TRUNCATE_T, size_t, [truncate arg type]) |
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else |
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AC_MSG_RESULT(off_t) |
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AC_DEFINE(TRUNCATE_T, off_t, [truncate arg type]) |
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fi |
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|
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dnl we need to handle symbols differently based upon their version, |
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dnl but we have to know which symbols the libc supports first |
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AC_MSG_CHECKING(libc path) |
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echo "int main(void) { return 0; }" > libctest.c |
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$CC -Wall -o libctest libctest.c |
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LIBC_PATH=`$CC $CFLAGS -Wl,-verbose -o libctest libctest.c 2>&1 | \ |
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$AWK '/attempt to open/ { if (($4 ~ /libc\.so/) && ($5 == "succeeded")) LIBC = $4; }; END {print LIBC}'` |
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rm -f libctest.c |
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if test "$LIBC_PATH"x = x ; then |
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AC_MSG_ERROR(Unable to determine 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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|
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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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dnl they're m4 escape sequences for left and right brackets |
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LIBC_VERSION=`readelf -d libctest | grep NEEDED.*libc\\.so | $AWK '{print $NF}' | sed -e 's:\@<:@::' -e 's:\@:>@::'` |
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rm -f libctest |
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if test "$LIBC_VERSION"x = x ; then |
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AC_MSG_ERROR(Unable to determine LIBC VERSION) |
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fi |
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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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|
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AC_OUTPUT([Makefile]) |