From 6cb5dcabf9d6122c98578cad49f17d40cc32d264 Mon Sep 17 00:00:00 2001
From: classabbyamp <void@placeviolette.net>
Date: Fri, 29 Sep 2023 17:40:53 -0400
Subject: [PATCH] dkms: allow limiting jobs, add missing dep

some less-powerful platforms may be overwhelmed by the default `-j$(nproc)`.
Allow overriding this by setting `DKMS_JOBS` in `/etc/default/dkms`

`bc` is needed for `make prepare0` on kernel 6.1+, which is run on cross.
---
 srcpkgs/dkms/files/dkms.default           |  2 ++
 srcpkgs/dkms/files/kernel.d/dkms.postinst |  9 ++++++---
 srcpkgs/dkms/template                     | 11 ++++++-----
 3 files changed, 14 insertions(+), 8 deletions(-)
 create mode 100644 srcpkgs/dkms/files/dkms.default

diff --git a/srcpkgs/dkms/files/dkms.default b/srcpkgs/dkms/files/dkms.default
new file mode 100644
index 00000000000..60312bf9720
--- /dev/null
+++ b/srcpkgs/dkms/files/dkms.default
@@ -0,0 +1,2 @@
+# number of parallel jobs to use for DKMS compilation (default: $(nproc))
+#DKMS_JOBS=
diff --git a/srcpkgs/dkms/files/kernel.d/dkms.postinst b/srcpkgs/dkms/files/kernel.d/dkms.postinst
index 66d22981b51..6e4d3b3149a 100644
--- a/srcpkgs/dkms/files/kernel.d/dkms.postinst
+++ b/srcpkgs/dkms/files/kernel.d/dkms.postinst
@@ -17,10 +17,13 @@ if [ ! -e /lib/modules/${VERSION}/build/include ] ; then
 	exit 0
 fi
 
+[ -r /etc/default/dkms ] && . /etc/default/dkms
+: "${DKMS_JOBS:=$(nproc)}"
+
 export IGNORE_CC_MISMATCH=1
 
 if [ ! -f /lib/modules/${VERSION}/build/scripts/basic/fixdep ] || [ ! -f /lib/modules/${VERSION}/build/scripts/mod/modpost ]; then
-	yes "" | make -j $(nproc) -C /lib/modules/${VERSION}/build prepare0
+	yes "" | make -j "${DKMS_JOBS}" -C /lib/modules/${VERSION}/build prepare0
 fi
 
 # Check available DKMS modules
@@ -68,7 +71,7 @@ while [ $# -gt 1 ]; do
 		fi
 		# Build the module
 		echo -n "Building DKMS module: ${module}-${modulever}... "
-		/usr/bin/dkms build -q -m ${module} -v ${modulever} -k ${VERSION} -a ${ARCH}
+		/usr/bin/dkms build -j "${DKMS_JOBS}" -q -m ${module} -v ${modulever} -k ${VERSION} -a ${ARCH}
 		rval=$?
 		# If the module was skipped or failed, go to the next module.
 		if [ $rval -eq 0 ]; then
@@ -87,7 +90,7 @@ while [ $# -gt 1 ]; do
 	if [ $(echo "$status"|grep -c ": built") -eq 1 ] &&
 	   [ $(echo "$status"|grep -c ": installed") -eq 0 ]; then
 		echo -n "Installing DKMS module: ${module}-${modulever}... "
-		/usr/bin/dkms install --force -q -m ${module} -v ${modulever} -k ${VERSION} -a ${ARCH}
+		/usr/bin/dkms install --force -j "${DKMS_JOBS}" -q -m ${module} -v ${modulever} -k ${VERSION} -a ${ARCH}
 		rval=$?
 		# If the module failed installation, go to the next module.
 		if [ $rval -eq 0 ]; then
diff --git a/srcpkgs/dkms/template b/srcpkgs/dkms/template
index 34ee6c4afab..4c86485bc01 100644
--- a/srcpkgs/dkms/template
+++ b/srcpkgs/dkms/template
@@ -1,9 +1,9 @@
 # Template file for 'dkms'
 pkgname=dkms
 version=3.0.10
-revision=2
-conf_files="/etc/dkms/framework.conf"
-depends="bash kmod gcc make coreutils xbps-triggers>=0.123_1"
+revision=3
+conf_files="/etc/dkms/framework.conf /etc/default/dkms"
+depends="bash kmod gcc bc make coreutils xbps-triggers>=0.123_1"
 short_desc="Dynamic Kernel Module Support"
 maintainer="Orphaned <orphan@voidlinux.org>"
 license="GPL-2.0-or-later"
@@ -35,6 +35,7 @@ do_install() {
 	vcompletion dkms.bash-completion bash dkms
 	vinstall dkms_framework.conf 644 etc/dkms framework.conf
 	# Kernel hooks.
-	vinstall ${FILESDIR}/kernel.d/dkms.postinst 754 etc/kernel.d/post-install 10-dkms
-	vinstall ${FILESDIR}/kernel.d/dkms.prerm 754 etc/kernel.d/pre-remove 10-dkms
+	vinstall "${FILESDIR}/kernel.d/dkms.postinst" 754 etc/kernel.d/post-install 10-dkms
+	vinstall "${FILESDIR}/kernel.d/dkms.prerm" 754 etc/kernel.d/pre-remove 10-dkms
+	vinstall "${FILESDIR}/dkms.default" 644 etc/default dkms
 }