From 2a06ad8e0aa254a12cdb43659d098e3d449b039c Mon Sep 17 00:00:00 2001
From: Jacek Szafarkiewicz <szafar@linux.pl>
Date: Sun, 22 Jan 2023 21:45:50 +0100
Subject: [PATCH 1/5] Use $kernel_config instead of $kernel_source_dir/.config

Signed-off-by: Jacek Szafarkiewicz <szafar@linux.pl>
---
 dkms.in | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/dkms.in b/dkms.in
index 486da5a1..28f57263 100644
--- a/dkms.in
+++ b/dkms.in
@@ -1036,8 +1036,8 @@ prepare_build()
             $"Check $build_dir for more information."
     done
 
-    if [[ -e $kernel_source_dir/.config ]]; then
-        cc=$(sed -n 's|^CONFIG_CC_VERSION_TEXT="\([^ ]*\) .*"|\1|p' $kernel_source_dir/.config)
+    if [[ -e "${kernel_config}" ]]; then
+        cc=$(sed -n 's|^CONFIG_CC_VERSION_TEXT="\([^ ]*\) .*"|\1|p' "${kernel_config}")
         if command -v "$cc" >/dev/null; then
             export CC="$cc"
         fi

From 5c5462b075dbb63a5eca68c78ff52a0d57be0aa7 Mon Sep 17 00:00:00 2001
From: Jacek Szafarkiewicz <szafar@linux.pl>
Date: Sun, 22 Jan 2023 21:47:22 +0100
Subject: [PATCH 2/5] Export KERNEL_CC when exporting CC

Signed-off-by: Jacek Szafarkiewicz <szafar@linux.pl>
---
 dkms.in | 1 +
 1 file changed, 1 insertion(+)

diff --git a/dkms.in b/dkms.in
index 28f57263..485b4a4a 100644
--- a/dkms.in
+++ b/dkms.in
@@ -1040,6 +1040,7 @@ prepare_build()
         cc=$(sed -n 's|^CONFIG_CC_VERSION_TEXT="\([^ ]*\) .*"|\1|p' "${kernel_config}")
         if command -v "$cc" >/dev/null; then
             export CC="$cc"
+            export KERNEL_CC="$cc"
         fi
     fi
 

From 484009979fe3344dba6ef626f7ef1d3fc5348b2d Mon Sep 17 00:00:00 2001
From: Jacek Szafarkiewicz <szafar@linux.pl>
Date: Sun, 22 Jan 2023 21:47:49 +0100
Subject: [PATCH 3/5] Export LD and KERNEL_LD as ld.lld when CONFIG_LD_IS_LLD=y
 is set

Signed-off-by: Jacek Szafarkiewicz <szafar@linux.pl>
---
 dkms.in | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/dkms.in b/dkms.in
index 485b4a4a..e3a35a25 100644
--- a/dkms.in
+++ b/dkms.in
@@ -1042,6 +1042,14 @@ prepare_build()
             export CC="$cc"
             export KERNEL_CC="$cc"
         fi
+
+        if grep -q 'CONFIG_LD_IS_LLD=y' "${kernel_config}"; then
+            ld=ld.lld
+            if command -v "$ld" >/dev/null; then
+                export LD="$ld"
+                export KERNEL_LD="$ld"
+            fi
+        fi
     fi
 
     # Run the pre_build script

From 4729aefebb98d229e542609c2b6c92545c7a69d8 Mon Sep 17 00:00:00 2001
From: Jacek Szafarkiewicz <szafar@linux.pl>
Date: Tue, 24 Jan 2023 10:15:01 +0100
Subject: [PATCH 4/5] Better way to detect clang compiler

Signed-off-by: Jacek Szafarkiewicz <szafar@linux.pl>
---
 dkms.in | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/dkms.in b/dkms.in
index e3a35a25..417a4082 100644
--- a/dkms.in
+++ b/dkms.in
@@ -1037,10 +1037,12 @@ prepare_build()
     done
 
     if [[ -e "${kernel_config}" ]]; then
-        cc=$(sed -n 's|^CONFIG_CC_VERSION_TEXT="\([^ ]*\) .*"|\1|p' "${kernel_config}")
-        if command -v "$cc" >/dev/null; then
-            export CC="$cc"
-            export KERNEL_CC="$cc"
+        if grep -q 'CONFIG_CC_IS_CLANG=y' "${kernel_config}"; then
+            cc=clang
+            if command -v "$cc" >/dev/null; then
+                export CC="$cc"
+                export KERNEL_CC="$cc"
+            fi
         fi
 
         if grep -q 'CONFIG_LD_IS_LLD=y' "${kernel_config}"; then

From ab65154e4880f75544df1d662614043e4ab9e339 Mon Sep 17 00:00:00 2001
From: Jacek Szafarkiewicz <szafar@linux.pl>
Date: Tue, 24 Jan 2023 10:15:28 +0100
Subject: [PATCH 5/5] Change cc and ld to local variables

Signed-off-by: Jacek Szafarkiewicz <szafar@linux.pl>
---
 dkms.in | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/dkms.in b/dkms.in
index 417a4082..f5a1f1c1 100644
--- a/dkms.in
+++ b/dkms.in
@@ -1038,7 +1038,7 @@ prepare_build()
 
     if [[ -e "${kernel_config}" ]]; then
         if grep -q 'CONFIG_CC_IS_CLANG=y' "${kernel_config}"; then
-            cc=clang
+            local cc=clang
             if command -v "$cc" >/dev/null; then
                 export CC="$cc"
                 export KERNEL_CC="$cc"
@@ -1046,7 +1046,7 @@ prepare_build()
         fi
 
         if grep -q 'CONFIG_LD_IS_LLD=y' "${kernel_config}"; then
-            ld=ld.lld
+            local ld=ld.lld
             if command -v "$ld" >/dev/null; then
                 export LD="$ld"
                 export KERNEL_LD="$ld"