From 77dcff8c4b78cf523c10b2a44b4f8eaf6c468a21 Mon Sep 17 00:00:00 2001
From: Orsiris de Jong <ozy@netpower.fr>
Date: Fri, 23 Jan 2026 11:36:42 +0100
Subject: [PATCH 1/2] Add --custom-config argument as per #14

---
 kernel_installer.sh | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/kernel_installer.sh b/kernel_installer.sh
index 18dbb89..f52fe4d 100755
--- a/kernel_installer.sh
+++ b/kernel_installer.sh
@@ -11,7 +11,7 @@
 ######################################################################
 
 
-VERSION='1.2.5'
+VERSION='1.2.6-dev'
 
 #------------------------------------------------------------------------------#
 #
@@ -351,6 +351,7 @@ usage() {
   printf "%s\\n" "  ${YELLOW}--dir                  |-d${NORMAL}   install directory"
   printf "%s\\n" "  ${YELLOW}--kexec                |-x${NORMAL}   load new kernel without reboot"
   printf "%s\\n" "  ${YELLOW}--config               |-c${NORMAL}   set configuration target"
+  printf "%s\\n" "  ${YELLOW}--custom-config        |-cc${NORMAL}  set custom configuration directive, can be used multiple times"
   printf "%s\\n" "  ${YELLOW}--verbose              |-v${NORMAL}   increase verbosity"
   printf "%s\\n" "  ${YELLOW}--get-verified-tarball |-gvt${NORMAL} cryptographically verify kernel tarball"
   printf "%s\\n" "  ${YELLOW}--nproc                |-n${NORMAL}   set the number of processing units to use"
@@ -367,6 +368,7 @@ usage() {
 }
 
 POSITIONAL_ARGS=()
+CUSTOM_CONFIG_OPTIONS=()
 
 while [[ $# -gt 0 ]]; do
   case $1 in
@@ -413,6 +415,11 @@ while [[ $# -gt 0 ]]; do
       shift
       shift
       ;;
+    --custom-config | -cc)
+      CUSTOM_CONFIG_OPTIONS+=("$2")
+      shift
+      shift
+      ;;
     --kexec | -x)
       shift
       KEXEC=1
@@ -467,6 +474,13 @@ set -- "${POSITIONAL_ARGS[@]}" # restore positional parameters
 
 chk_kernel
 
+if [ -n "$CUSTOM_CONFIG_OPTIONS" ]; then
+  SANITIZED_CUSTOM_CONFIG_OPTIONS=()
+  for custom_config_option in "${CUSTOM_CONFIG_OPTIONS[@]}"; do
+    SANITIZED_CUSTOM_CONFIG_OPTIONS+=("$(echo "$custom_config_option")")
+  done
+fi
+
 # Start with a clean log
 if [[ -f $LOGFILE ]]; then
   rm "$LOGFILE"
@@ -1000,6 +1014,10 @@ install_kernel() {
         scripts/config --enable CONFIG_ZRAM_BACKEND_842
         scripts/config --enable CONFIG_ZRAM_BACKEND_LZO
       fi
+      for custom_config_option in "${SANITIZED_CUSTOM_CONFIG_OPTIONS[@]}"; do
+        log_debug "Adding custom config option: \"$custom_config_option\""
+        eval "$custom_config_option"
+      done
       echo
       # Compilation
       log_debug "Phase 5 of 6: Compilation"

From d611c8491c4b9ee0879a4a04835d6d800727525c Mon Sep 17 00:00:00 2001
From: Orsiris de Jong <ozy@netpower.fr>
Date: Fri, 23 Jan 2026 11:42:36 +0100
Subject: [PATCH 2/2] Document custom configuration usage in README

Added documentation for custom configuration directives.
---
 README.md | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/README.md b/README.md
index ebffb60..7b7ed8a 100644
--- a/README.md
+++ b/README.md
@@ -90,6 +90,7 @@ If called without arguments, installs stable kernel using /opt/linux
 --dir                  |-d   install directory
 --kexec                |-x   load new kernel without reboot
 --config               |-c   set configuration target
+--custom-config        |-cc  set custom configuration directive, can be used multiple times
 --verbose              |-v   increase verbosity
 --get-verified-tarball |-gvt cryptographically verify kernel tarball
 --nproc                |-n   set the number of processing units to use
@@ -149,6 +150,18 @@ kvmconfig       - Enable additional options for guest kernel support
 tinyconfig      - Configure the tiniest possible kernel
 ```
 
+### Custom configuration directives
+
+In order to enable specific kernel configs, one can use `--custom-config` like the following example:
+```
+./kernel_installer.sh --custom-config "scripts/config --set-val CONFIG_DM_VDO m"
+```
+
+Note that `--custom-config can be used multiple times like:
+```
+./kernel_installer.sh --custom-config "scripts/config --set-val CONFIG_DM_VDO m" --custom-config "scripts/config --set-val CONFIG_KERNEL_ZSTD y"
+```
+
 To use --get-verified-tarball:
 ```bash
 ./kernel_installer.sh --get-verified-tarball