Make Missing Modules.symvers Fatal

Detect early on in configure if the Modules.symvers file is missing.
Without this file there will be build failures later and it's best
to catch this early and provide a useful error.  In this case the
most likely problem is the kernel-devel packages are not installed.
It may also be possible that they are using an unbuilt custom kernel
in which case they must build the kernel first.

Closes #127

diff --git a/config/kernel.m4 b/config/kernel.m4
index 8b4a5c7..2b4df70 100644 (file)
--- a/config/kernel.m4
+++ b/config/kernel.m4
@@ -61,6 +61,14 @@ AC_DEFUN([ZFS_AC_MODULE_SYMVERS], [
                else
                        LINUX_SYMBOLS=Module.symvers
                fi
+
+               if ! test -f "$LINUX_OBJ/$LINUX_SYMBOLS"; then
+                       AC_MSG_ERROR([
+       *** Please make sure the kernel devel package for your distribution
+       *** is installed.  If your building with a custom kernel make sure the
+       *** kernel is configured, built, and the '--with-linux=PATH' configure
+       *** option refers to the location of the kernel source.])
+               fi
        else
                LINUX_SYMBOLS=NONE
        fi

diff --git a/configure b/configure
index 352b683..ea6e1bc 100755 (executable)
--- a/configure
+++ b/configure
@@ -11964,6 +11964,20 @@ $as_echo_n "checking kernel file name for module symbols... " >&6; }
                else
                        LINUX_SYMBOLS=Module.symvers
                fi
+
+               if ! test -f "$LINUX_OBJ/$LINUX_SYMBOLS"; then
+                       { { $as_echo "$as_me:$LINENO: error:
+       *** Please make sure the kernel devel package for your distribution
+       *** is installed.  If your building with a custom kernel make sure the
+       *** kernel is configured, built, and the '--with-linux=PATH' configure
+       *** option refers to the location of the kernel source." >&5
+$as_echo "$as_me: error:
+       *** Please make sure the kernel devel package for your distribution
+       *** is installed.  If your building with a custom kernel make sure the
+       *** kernel is configured, built, and the '--with-linux=PATH' configure
+       *** option refers to the location of the kernel source." >&2;}
+   { (exit 1); exit 1; }; }
+               fi
        else
                LINUX_SYMBOLS=NONE
        fi
@@ -15955,6 +15969,20 @@ $as_echo_n "checking kernel file name for module symbols... " >&6; }
                else
                        LINUX_SYMBOLS=Module.symvers
                fi
+
+               if ! test -f "$LINUX_OBJ/$LINUX_SYMBOLS"; then
+                       { { $as_echo "$as_me:$LINENO: error:
+       *** Please make sure the kernel devel package for your distribution
+       *** is installed.  If your building with a custom kernel make sure the
+       *** kernel is configured, built, and the '--with-linux=PATH' configure
+       *** option refers to the location of the kernel source." >&5
+$as_echo "$as_me: error:
+       *** Please make sure the kernel devel package for your distribution
+       *** is installed.  If your building with a custom kernel make sure the
+       *** kernel is configured, built, and the '--with-linux=PATH' configure
+       *** option refers to the location of the kernel source." >&2;}
+   { (exit 1); exit 1; }; }
+               fi
        else
                LINUX_SYMBOLS=NONE
        fi