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02f4b63db9
All of these set a #define that doesn't appear anywhere in the tree. Sponsored-by: https://despairlabs.com/sponsor/ Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Tony Hutter <hutter2@llnl.gov> Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de> Signed-off-by: Rob Norris <robn@despairlabs.com> Closes #16479
222 lines
6.3 KiB
Plaintext
222 lines
6.3 KiB
Plaintext
dnl #
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dnl # Certain kernel build options are not supported. These must be
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dnl # detected at configure time and cause a build failure. Otherwise
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dnl # modules may be successfully built that behave incorrectly.
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_CONFIG_DEFINED], [
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ZFS_AC_KERNEL_SRC_CONFIG_MODULES
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ZFS_AC_KERNEL_SRC_CONFIG_BLOCK
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ZFS_AC_KERNEL_SRC_CONFIG_DEBUG_LOCK_ALLOC
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ZFS_AC_KERNEL_SRC_CONFIG_TRIM_UNUSED_KSYMS
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ZFS_AC_KERNEL_SRC_CONFIG_ZLIB_DEFLATE
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ZFS_AC_KERNEL_SRC_CONFIG_ZLIB_INFLATE
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AC_MSG_CHECKING([for kernel config option compatibility])
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ZFS_LINUX_TEST_COMPILE_ALL([config])
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AC_MSG_RESULT([done])
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ZFS_AC_KERNEL_CONFIG_MODULES
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ZFS_AC_KERNEL_CONFIG_BLOCK
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ZFS_AC_KERNEL_CONFIG_DEBUG_LOCK_ALLOC
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ZFS_AC_KERNEL_CONFIG_TRIM_UNUSED_KSYMS
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ZFS_AC_KERNEL_CONFIG_ZLIB_DEFLATE
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ZFS_AC_KERNEL_CONFIG_ZLIB_INFLATE
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])
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dnl #
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dnl # Check CONFIG_BLOCK
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dnl #
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dnl # Verify the kernel has CONFIG_BLOCK support enabled.
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_CONFIG_BLOCK], [
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ZFS_LINUX_TEST_SRC([config_block], [
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#if !defined(CONFIG_BLOCK)
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#error CONFIG_BLOCK not defined
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#endif
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],[])
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])
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AC_DEFUN([ZFS_AC_KERNEL_CONFIG_BLOCK], [
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AC_MSG_CHECKING([whether CONFIG_BLOCK is defined])
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ZFS_LINUX_TEST_RESULT([config_block], [
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AC_MSG_RESULT([yes])
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],[
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AC_MSG_RESULT([no])
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AC_MSG_ERROR([
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*** This kernel does not include the required block device support.
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*** Rebuild the kernel with CONFIG_BLOCK=y set.])
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])
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])
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dnl #
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dnl # Check CONFIG_DEBUG_LOCK_ALLOC
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dnl #
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dnl # This is typically only set for debug kernels because it comes with
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dnl # a performance penalty. However, when it is set it maps the non-GPL
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dnl # symbol mutex_lock() to the GPL-only mutex_lock_nested() symbol.
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dnl # This will cause a failure at link time which we'd rather know about
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dnl # at compile time.
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dnl #
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dnl # Since we plan to pursue making mutex_lock_nested() a non-GPL symbol
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dnl # with the upstream community we add a check to detect this case.
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_CONFIG_DEBUG_LOCK_ALLOC], [
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ZFS_LINUX_TEST_SRC([config_debug_lock_alloc], [
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#include <linux/mutex.h>
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],[
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struct mutex lock;
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mutex_init(&lock);
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mutex_lock(&lock);
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mutex_unlock(&lock);
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], [], [ZFS_META_LICENSE])
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])
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AC_DEFUN([ZFS_AC_KERNEL_CONFIG_DEBUG_LOCK_ALLOC], [
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AC_MSG_CHECKING([whether mutex_lock() is GPL-only])
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ZFS_LINUX_TEST_RESULT([config_debug_lock_alloc_license], [
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AC_MSG_RESULT(no)
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],[
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AC_MSG_RESULT(yes)
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AC_MSG_ERROR([
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*** Kernel built with CONFIG_DEBUG_LOCK_ALLOC which is incompatible
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*** with the CDDL license and will prevent the module linking stage
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*** from succeeding. You must rebuild your kernel without this
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*** option enabled.])
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])
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])
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dnl #
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dnl # Check CONFIG_MODULES
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dnl #
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dnl # Verify the kernel has CONFIG_MODULES support enabled.
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_CONFIG_MODULES], [
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ZFS_LINUX_TEST_SRC([config_modules], [
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#if !defined(CONFIG_MODULES)
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#error CONFIG_MODULES not defined
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#endif
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],[])
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])
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AC_DEFUN([ZFS_AC_KERNEL_CONFIG_MODULES], [
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AC_MSG_CHECKING([whether CONFIG_MODULES is defined])
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AS_IF([test "x$enable_linux_builtin" != xyes], [
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ZFS_LINUX_TEST_RESULT([config_modules], [
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AC_MSG_RESULT([yes])
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],[
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AC_MSG_RESULT([no])
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AC_MSG_ERROR([
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*** This kernel does not include the required loadable module
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*** support!
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***
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*** To build OpenZFS as a loadable Linux kernel module
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*** enable loadable module support by setting
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*** `CONFIG_MODULES=y` in the kernel configuration and run
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*** `make modules_prepare` in the Linux source tree.
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***
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*** If you don't intend to enable loadable kernel module
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*** support, please compile OpenZFS as a Linux kernel built-in.
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***
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*** Prepare the Linux source tree by running `make prepare`,
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*** use the OpenZFS `--enable-linux-builtin` configure option,
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*** copy the OpenZFS sources into the Linux source tree using
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*** `./copy-builtin <linux source directory>`,
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*** set `CONFIG_ZFS=y` in the kernel configuration and compile
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*** kernel as usual.
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])
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])
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], [
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ZFS_LINUX_TRY_COMPILE([], [], [
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AC_MSG_RESULT([not needed])
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],[
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AC_MSG_RESULT([error])
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AC_MSG_ERROR([
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*** This kernel is unable to compile object files.
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***
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*** Please make sure you prepared the Linux source tree
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*** by running `make prepare` there.
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])
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])
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])
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])
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dnl #
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dnl # Check CONFIG_TRIM_UNUSED_KSYMS
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dnl #
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dnl # Verify the kernel has CONFIG_TRIM_UNUSED_KSYMS disabled.
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_CONFIG_TRIM_UNUSED_KSYMS], [
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ZFS_LINUX_TEST_SRC([config_trim_unusued_ksyms], [
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#if defined(CONFIG_TRIM_UNUSED_KSYMS)
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#error CONFIG_TRIM_UNUSED_KSYMS not defined
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#endif
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],[])
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])
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AC_DEFUN([ZFS_AC_KERNEL_CONFIG_TRIM_UNUSED_KSYMS], [
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AC_MSG_CHECKING([whether CONFIG_TRIM_UNUSED_KSYM is disabled])
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ZFS_LINUX_TEST_RESULT([config_trim_unusued_ksyms], [
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AC_MSG_RESULT([yes])
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],[
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AC_MSG_RESULT([no])
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AS_IF([test "x$enable_linux_builtin" != xyes], [
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AC_MSG_ERROR([
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*** This kernel has unused symbols trimming enabled, please disable.
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*** Rebuild the kernel with CONFIG_TRIM_UNUSED_KSYMS=n set.])
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])
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])
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])
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dnl #
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dnl # Check CONFIG_ZLIB_INFLATE
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dnl #
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dnl # Verify the kernel has CONFIG_ZLIB_INFLATE support enabled.
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_CONFIG_ZLIB_INFLATE], [
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ZFS_LINUX_TEST_SRC([config_zlib_inflate], [
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#if !defined(CONFIG_ZLIB_INFLATE) && \
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!defined(CONFIG_ZLIB_INFLATE_MODULE)
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#error CONFIG_ZLIB_INFLATE not defined
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#endif
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],[])
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])
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AC_DEFUN([ZFS_AC_KERNEL_CONFIG_ZLIB_INFLATE], [
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AC_MSG_CHECKING([whether CONFIG_ZLIB_INFLATE is defined])
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ZFS_LINUX_TEST_RESULT([config_zlib_inflate], [
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AC_MSG_RESULT([yes])
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],[
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AC_MSG_RESULT([no])
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AC_MSG_ERROR([
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*** This kernel does not include the required zlib inflate support.
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*** Rebuild the kernel with CONFIG_ZLIB_INFLATE=y|m set.])
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])
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])
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dnl #
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dnl # Check CONFIG_ZLIB_DEFLATE
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dnl #
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dnl # Verify the kernel has CONFIG_ZLIB_DEFLATE support enabled.
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_CONFIG_ZLIB_DEFLATE], [
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ZFS_LINUX_TEST_SRC([config_zlib_deflate], [
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#if !defined(CONFIG_ZLIB_DEFLATE) && \
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!defined(CONFIG_ZLIB_DEFLATE_MODULE)
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#error CONFIG_ZLIB_DEFLATE not defined
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#endif
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],[])
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])
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AC_DEFUN([ZFS_AC_KERNEL_CONFIG_ZLIB_DEFLATE], [
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AC_MSG_CHECKING([whether CONFIG_ZLIB_DEFLATE is defined])
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ZFS_LINUX_TEST_RESULT([config_zlib_deflate], [
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AC_MSG_RESULT([yes])
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],[
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AC_MSG_RESULT([no])
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AC_MSG_ERROR([
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*** This kernel does not include the required zlib deflate support.
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*** Rebuild the kernel with CONFIG_ZLIB_DEFLATE=y|m set.])
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])
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])
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