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autoconf: Pretend CONFIG_MODULES is always on #13361

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merged 1 commit into from
Apr 26, 2022
Merged

autoconf: Pretend CONFIG_MODULES is always on #13361

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57 changes: 57 additions & 0 deletions config/kernel-config-defined.m4
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Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,7 @@ AC_DEFUN([ZFS_AC_KERNEL_CONFIG_DEFINED], [
])
])

ZFS_AC_KERNEL_SRC_CONFIG_MODULES
ZFS_AC_KERNEL_SRC_CONFIG_BLOCK
ZFS_AC_KERNEL_SRC_CONFIG_DEBUG_LOCK_ALLOC
ZFS_AC_KERNEL_SRC_CONFIG_TRIM_UNUSED_KSYMS
Expand All @@ -29,6 +30,7 @@ AC_DEFUN([ZFS_AC_KERNEL_CONFIG_DEFINED], [
ZFS_LINUX_TEST_COMPILE_ALL([config])
AC_MSG_RESULT([done])

ZFS_AC_KERNEL_CONFIG_MODULES
ZFS_AC_KERNEL_CONFIG_BLOCK
ZFS_AC_KERNEL_CONFIG_DEBUG_LOCK_ALLOC
ZFS_AC_KERNEL_CONFIG_TRIM_UNUSED_KSYMS
Expand Down Expand Up @@ -99,6 +101,61 @@ AC_DEFUN([ZFS_AC_KERNEL_CONFIG_DEBUG_LOCK_ALLOC], [
])
])

dnl #
dnl # Check CONFIG_MODULES
dnl #
dnl # Verify the kernel has CONFIG_MODULES support enabled.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_CONFIG_MODULES], [
ZFS_LINUX_TEST_SRC([config_modules], [
#if !defined(CONFIG_MODULES)
#error CONFIG_MODULES not defined
#endif
],[])
])

AC_DEFUN([ZFS_AC_KERNEL_CONFIG_MODULES], [
AC_MSG_CHECKING([whether CONFIG_MODULES is defined])
AS_IF([test "x$enable_linux_builtin" != xyes], [
ZFS_LINUX_TEST_RESULT([config_modules], [
AC_MSG_RESULT([yes])
],[
AC_MSG_RESULT([no])
AC_MSG_ERROR([
*** This kernel does not include the required loadable module
*** support!
***
*** To build OpenZFS as a loadable Linux kernel module
*** enable loadable module support by setting
*** `CONFIG_MODULES=y` in the kernel configuration and run
*** `make modules_prepare` in the Linux source tree.
***
*** If you don't intend to enable loadable kernel module
*** support, please compile OpenZFS as a Linux kernel built-in.
***
*** Prepare the Linux source tree by running `make prepare`,
*** use the OpenZFS `--enable-linux-builtin` configure option,
*** copy the OpenZFS sources into the Linux source tree using
*** `./copy-builtin <linux source directory>`,
*** set `CONFIG_ZFS=y` in the kernel configuration and compile
*** kernel as usual.
])
])
], [
ZFS_LINUX_TRY_COMPILE([], [], [
AC_MSG_RESULT([not needed])
],[
AC_MSG_RESULT([error])
AC_MSG_ERROR([
*** This kernel is unable to compile object files.
***
*** Please make sure you prepared the Linux source tree
*** by running `make prepare` there.
])
])
])
])

dnl #
dnl # Check CONFIG_TRIM_UNUSED_KSYMS
dnl #
Expand Down
31 changes: 5 additions & 26 deletions config/kernel.m4
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Original file line number Diff line number Diff line change
Expand Up @@ -8,8 +8,8 @@ AC_DEFUN([ZFS_AC_CONFIG_KERNEL], [
ZFS_AC_QAT

dnl # Sanity checks for module building and CONFIG_* defines
ZFS_AC_KERNEL_TEST_MODULE
ZFS_AC_KERNEL_CONFIG_DEFINED
ZFS_AC_MODULE_SYMVERS

dnl # Sequential ZFS_LINUX_TRY_COMPILE tests
ZFS_AC_KERNEL_FPU_HEADER
Expand Down Expand Up @@ -443,8 +443,6 @@ AC_DEFUN([ZFS_AC_KERNEL], [
AC_SUBST(LINUX)
AC_SUBST(LINUX_OBJ)
AC_SUBST(LINUX_VERSION)

ZFS_AC_MODULE_SYMVERS
])

dnl #
Expand Down Expand Up @@ -539,27 +537,6 @@ AC_DEFUN([ZFS_AC_QAT], [
])
])

dnl #
dnl # Basic toolchain sanity check.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_TEST_MODULE], [
AC_MSG_CHECKING([whether modules can be built])
ZFS_LINUX_TRY_COMPILE([], [], [
AC_MSG_RESULT([yes])
],[
AC_MSG_RESULT([no])
if test "x$enable_linux_builtin" != xyes; then
AC_MSG_ERROR([
*** Unable to build an empty module.
])
else
AC_MSG_ERROR([
*** Unable to build an empty module.
*** Please run 'make scripts' inside the kernel source tree.])
fi
])
])

dnl #
dnl # ZFS_LINUX_CONFTEST_H
dnl #
Expand Down Expand Up @@ -662,8 +639,10 @@ AC_DEFUN([ZFS_LINUX_COMPILE], [
build kernel modules with LLVM/CLANG toolchain])
AC_TRY_COMMAND([
KBUILD_MODPOST_NOFINAL="$5" KBUILD_MODPOST_WARN="$6"
make modules -k -j$TEST_JOBS ${KERNEL_CC:+CC=$KERNEL_CC} ${KERNEL_LD:+LD=$KERNEL_LD} ${KERNEL_LLVM:+LLVM=$KERNEL_LLVM} -C $LINUX_OBJ $ARCH_UM
M=$PWD/$1 >$1/build.log 2>&1])
make modules -k -j$TEST_JOBS ${KERNEL_CC:+CC=$KERNEL_CC}
${KERNEL_LD:+LD=$KERNEL_LD} ${KERNEL_LLVM:+LLVM=$KERNEL_LLVM}
CONFIG_MODULES=y CFLAGS_MODULE=-DCONFIG_MODULES
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-C $LINUX_OBJ $ARCH_UM M=$PWD/$1 >$1/build.log 2>&1])
AS_IF([AC_TRY_COMMAND([$2])], [$3], [$4])
])

Expand Down