install.sh: Add convenience script for generic install (#227)

* install.sh: simplify ccache code

* install.sh: add generic distro install

* README: update with Generic distro install

* install.sh: update help messages

README.md

@@ -119,3 +119,11 @@ The command to do for that is:
 ./install.sh config
 ```
 
+If one chooses `Generic` as distro. `./install.sh install` will compile the kernel then prompt before doing the following:
+```shell
+sudo make modules_install
+sudo make install
+sudo dracut --hostonly --kver $_kernelname
+sudo grub-mkconfig -o /boot/grub/grub.cfg
+```
+

customization.cfg

@@ -1,6 +1,6 @@
 # linux-TkG config file
 
-# Linux distribution you are using, options are "Arch", "Void", "Ubuntu", "Debian", "Fedora" or "Suse".
+# Linux distribution you are using, options are "Arch", "Void", "Ubuntu", "Debian", "Fedora", "Suse", "Generic".
 # It is automatically set to "Arch" when using PKGBUILD.
 # If left empty, the script will prompt
 _distro=""
@@ -61,11 +61,11 @@ _diffconfig_name=""
 # Name of the default config file to use for the kernel
 # Default (empty):
 # - Archlinux (PKGBUILD): "config.x86_64" from the linux-tkg-config/5.y folder.
-# - install.sh: Picks the .config file from the currently running kernel. 
+# - install.sh: Picks the .config file from the currently running kernel.
 #               It is recommended to be running an official kernel before running this script, to pick off a correct .config file
-# User provided: 
+# User provided:
 # - Archlinux : use "config_hardened.x86_64" to get a hardened kernel. To get a complete hardened setup, you have to use "cfs" as _cpusched.
-# - Any : custom user provided file, the given path should be relative to the PKGBUILD file. This enables for example to use a user stripped down .config file. 
+# - Any : custom user provided file, the given path should be relative to the PKGBUILD file. This enables for example to use a user stripped down .config file.
 #         If the .config file isn't up to date with the chosen kernel version, any extra CONFIG_XXXX is set to its default value.
 # Note: the script copies the resulting .config file as "kernelconfig.new" next to the PKGBUILD as a convenience for an eventual re-use. It gets overwritten at each run.
 #       One can use "kernelconfig.new" here to always use the latest edited .config file. modprobed-db needs to be used only once for its changes to be picked up.

install.sh

@@ -25,7 +25,8 @@ _distro_prompt() {
     echo "   2) Fedora"
     echo "   3) Suse"
     echo "   4) Ubuntu"
-    read -p "[1-4]: " _distro_index
+    echo "   5) Generic"
+    read -p "[1-5]: " _distro_index
 
     if [ "$_distro_index" = "1" ]; then
       _distro="Debian"
@@ -39,6 +40,9 @@ _distro_prompt() {
     elif [ "$_distro_index" = "4" ]; then
       _distro="Ubuntu"
       break
+    elif [ "$_distro_index" = "5" ]; then
+      _distro="Generic"
+      break
     else
       echo "Wrong index."
     fi
@@ -180,9 +184,12 @@ source linux-tkg-config/prepare
 if [ "$1" != "install" ] && [ "$1" != "config" ] && [ "$1" != "uninstall-help" ]; then
   msg2 "Argument not recognised, options are:
         - config : interactive script that shallow clones the linux 5.x.y git tree into the folder linux-src-git, then applies extra patches and prepares the .config file
-                   by copying the one from the currently running linux system and updates it. 
-        - install : [for RPM and DEB based distros only], does the config step, proceeds to compile, then prompts to install
-        - uninstall-help : [for RPM and DEB based distros only], lists the installed kernels in this system, then gives hints on how to uninstall them manually."
+                   by copying the one from the currently running linux system and updates it.
+        - install : does the config step, proceeds to compile, then prompts to install
+                    - 'DEB' distros: it creates .deb packages that will be installed then stored in the DEBS folder.
+                    - 'RPM' distros: it creates .rpm packages that will be installed then stored in the RPMS folder.
+                    - 'Generic' distro: it uses 'make modules_install' and 'make install', uses 'dracut' to create an initramfs, then updates grub's boot entry.
+        - uninstall-help : [RPM and DEB based distros only], lists the installed kernels in this system, then gives hints on how to uninstall them manually."
   exit 0
 fi
 
@@ -205,7 +212,7 @@ if [ "$1" = "install" ] || [ "$1" = "config" ]; then
   # Run init script that is also run in PKGBUILD, it will define some env vars that we will use
   _tkg_initscript
 
-  if [[ $1 = "install" && ! "$_distro" =~ ^(Ubuntu|Debian|Fedora|Suse)$ ]]; then
+  if [[ $1 = "install" && ! "$_distro" =~ ^(Ubuntu|Debian|Fedora|Suse|Generic)$ ]]; then
     msg2 "Variable \"_distro\" in \"customization.cfg\" hasn't been set to \"Ubuntu\", \"Debian\",  \"Fedora\" or \"Suse\""
     msg2 "This script can only install custom kernels for RPM and DEB based distros, though only those keywords are permitted. Exiting..."
     exit 0
@@ -303,17 +310,11 @@ if [ "$1" = "install" ]; then
 
   # ccache
   if [ "$_noccache" != "true" ]; then
-    # Todo: deal with generic and paths, maybe just export boths possibilities and not care
-    if [[ "$_distro" =~ ^(Ubuntu|Debian)$ ]]; then
-      export PATH="/usr/lib/ccache/bin/:$PATH"
-    elif [[ "$_distro" =~ ^(Fedora|Suse)$ ]]; then
-      export PATH="/usr/lib64/ccache/:$PATH"
-    fi
+    export PATH="/usr/lib64/ccache/:/usr/lib/ccache/bin/:$PATH"
 
     export CCACHE_SLOPPINESS="file_macro,locale,time_macros"
     export CCACHE_NOHASHDIR="true"
     msg2 'Enabled ccache'
-
   fi
 
   if [ -z $_kernel_localversion ]; then
@@ -404,6 +405,36 @@ if [ "$1" = "install" ]; then
         msg2 "Install successful"
       fi
     fi
+
+  elif [ "$_distro" = "Generic" ]; then
+
+    ./scripts/config --set-str LOCALVERSION "-${_kernel_flavor}"
+
+    if make ${llvm_opt} -j ${_thread_num}; then
+
+      if [[ "$_sub" = rc* ]]; then
+        _kernelname=$_basekernel.${_kernel_subver}-${_sub}-$_kernel_flavor
+      else
+        _kernelname=$_basekernel.${_kernel_subver}-$_kernel_flavor
+      fi
+
+      msg2 "Building successful"
+      msg2 "The installation process will run the following commands:"
+      msg2 "  sudo make modules_install"
+      msg2 "  sudo make install"
+      msg2 "  sudo dracut --hostonly --kver $_kernelname"
+      msg2 "  sudo grub-mkconfig -o /boot/grub/grub.cfg"
+      read -p "Continue ? [Y/n]: " _continue
+
+      if ! [[ $_continue =~ ^(Y|y|Yes|yes)$ ]];then
+        exit 0
+      fi
+
+      sudo make modules_install
+      sudo make install
+      sudo dracut --hostonly --kver $_kernelname
+      sudo grub-mkconfig -o /boot/grub/grub.cfg
+    fi
   fi
 fi
 
@@ -414,9 +445,9 @@ if [ "$1" = "uninstall-help" ]; then
   fi
 
   cd "$_where"
-  msg2 "List of installed custom tkg kernels: "
 
   if [ "$_distro" = "Ubuntu" ]; then
+    msg2 "List of installed custom tkg kernels: "
     dpkg -l "*tkg*" | grep "linux.*tkg"
     dpkg -l "*linux-libc-dev*" | grep "linux.*tkg"
     msg2 "To uninstall a version, you should remove the linux-image, linux-headers and linux-libc-dev associated to it (if installed), with: "
@@ -424,17 +455,28 @@ if [ "$1" = "uninstall-help" ]; then
     msg2 "       where VERSION is displayed in the lists above, uninstall only versions that have \"tkg\" in its name"
     msg2 "Note: linux-libc-dev packages are no longer created and installed, you can safely remove any remnants."
   elif [ "$_distro" = "Fedora" ]; then
+    msg2 "List of installed custom tkg kernels: "
     dnf list --installed kernel*
     msg2 "To uninstall a version, you should remove the kernel, kernel-headers and kernel-devel associated to it (if installed), with: "
     msg2 "      sudo dnf remove --noautoremove kernel-VERSION kernel-devel-VERSION kernel-headers-VERSION"
     msg2 "       where VERSION is displayed in the second column"
     msg2 "Note: kernel-headers packages are no longer created and installed, you can safely remove any remnants."
   elif [ "$_distro" = "Suse" ]; then
+    msg2 "List of installed custom tkg kernels: "
     zypper packages --installed-only | grep "kernel.*tkg"
     msg2 "To uninstall a version, you should remove the kernel, kernel-headers and kernel-devel associated to it (if installed), with: "
     msg2 "      sudo zypper remove --no-clean-deps kernel-VERSION kernel-devel-VERSION kernel-headers-VERSION"
     msg2 "       where VERSION is displayed in the second to last column"
     msg2 "Note: kernel-headers packages are no longer created and installed, you can safely remove any remnants."
+  elif [ "$_distro" = "Generic" ]; then
+    msg2 "Folders in /lib/modules :"
+    ls /lib/modules
+    msg2 "Files in /boot :"
+    ls /boot
+    msg2 "To uninstall a kernel version installed through install.sh with 'Generic' as a distro:"
+    msg2 "  - Remove manually the corresponding folder in '/lib/modules'"
+    msg2 "  - Remove manually the corresponding 'System.map', 'vmlinuz', 'config' and 'initramfs' in the folder :/boot"
+    msg2 "  - Update the boot menu. e.g. 'sudo grub-mkconfig -o /boot/grub/grub.cfg'"
   fi
 
 fi