From cf37abf4b59405c730af52373631c8e819e1693b Mon Sep 17 00:00:00 2001
From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Date: Sun, 19 May 2019 20:54:02 +0300
Subject: Move cross compiler configuration to separate config.sh file

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---
 arch/arm.sh   |  1 -
 arch/arm64.sh |  1 -
 arch/x86.sh   |  1 -
 config.sh     |  7 +++++++
 kbuild.sh     | 37 ++++++++++++++++++++++---------------
 5 files changed, 29 insertions(+), 18 deletions(-)
 create mode 100644 config.sh

diff --git a/arch/arm.sh b/arch/arm.sh
index 53462fb..4995c00 100644
--- a/arch/arm.sh
+++ b/arch/arm.sh
@@ -1,3 +1,2 @@
 arch_dir=arm32
-cross_compile=arm-buildroot-linux-uclibcgnueabihf-
 image_kernel=zImage
diff --git a/arch/arm64.sh b/arch/arm64.sh
index a4b4b87..e5fbed3 100644
--- a/arch/arm64.sh
+++ b/arch/arm64.sh
@@ -1,3 +1,2 @@
 arch_dir=arm64
-cross_compile=aarch64-buildroot-linux-gnu-
 image_kernel=Image
diff --git a/arch/x86.sh b/arch/x86.sh
index 50edef3..249a8f7 100644
--- a/arch/x86.sh
+++ b/arch/x86.sh
@@ -1,3 +1,2 @@
 arch_dir=x86
-cross_compile=
 image_kernel=bzImage
diff --git a/config.sh b/config.sh
new file mode 100644
index 0000000..cedf643
--- /dev/null
+++ b/config.sh
@@ -0,0 +1,7 @@
+#
+# Cross-compilers
+#
+# Variable name: cross_compile[]
+#
+cross_compile[arm]=arm-buildroot-linux-uclibcgnueabihf-
+cross_compile[arm64]=aarch64-buildroot-linux-gnu-
diff --git a/kbuild.sh b/kbuild.sh
index 98a59bc..15e1dc7 100755
--- a/kbuild.sh
+++ b/kbuild.sh
@@ -1,10 +1,16 @@
-#!/bin/sh
+#!/bin/bash
 # SPDX-License-Identifier: GPL-2.0+
 
 set -e
 
 kbuild_root=$(dirname $(readlink -f "$0"))
 
+declare -A cross_compile
+
+if [[ -r $kbuild_root/config.sh ]] ; then
+	source $kbuild_root/config.sh || exit 1
+fi
+
 #kbuild_options='CONFIG_DEBUG_SECTION_MISMATCH=y'
 #kbuild_options='C=1'
 kbuild_options="KALLSYMS_EXTRA_PASS=0"
@@ -113,17 +119,16 @@ fi
 
 source "${kbuild_root}/arch/$arch.sh" || exit 1
 
-target_dir=${target_dir:-$nfs_root/$arch_dir}
+target_dir=${target_dir:-${target_root[$arch]}}
 output_dir=$PWD/output/$arch_dir
 
 #
-# Parallelize make with twice as many jobs as CPUs
+# Build environment and tools
 #
 
 num_cpus=$(cat /proc/cpuinfo | grep '^processor\b' | wc -l)
-pmake="make -j$((num_cpus*2))"
-
-kbuild_options="$kbuild_options KCFLAGS='$kcflags'"
+make="make ARCH=$arch O=$output_dir CROSS_COMPILE=${cross_compile[$arch]}"
+pmake="$make -j$((num_cpus*2))"
 
 echo "Compiling for platform $platform with $num_cpus CPUs"
 
@@ -132,12 +137,12 @@ mkdir -p $output_dir/
 if [[ -n "$opt_defconfig" ]] ; then
 	mkdir -p $output_dir/arch/$arch/configs/
 	cp $opt_defconfig $output_dir/arch/$arch/configs/build_defconfig
-	make ARCH=$arch O=$output_dir build_defconfig
+	$make build_defconfig
 	rm $output_dir/arch/$arch/configs/build_defconfig
 fi
 
 if [[ $do_menu_config = 1 ]] ; then
-	make ARCH=$arch O=$output_dir menuconfig
+	$make menuconfig
 	exit 0
 fi
 
@@ -146,7 +151,7 @@ fi
 #
 
 if [[ $do_compile_doc = 1 ]] ; then
-	$pmake ARCH=$arch O=$output_dir DOCBOOKS='' htmldocs
+	$pmake DOCBOOKS='' htmldocs
 fi
 
 #
@@ -159,13 +164,11 @@ for dtb in $dtbs ; do
 	kernel_dtbs="$kernel_dtbs $dtb"
 done
 
-eval $pmake ARCH=$arch O=$output_dir CROSS_COMPILE=$cross_compile $kbuild_options \
-	$image_kernel $kernel_dtbs
+$pmake $kbuild_options KCFLAGS="$kcflags" $image_kernel $kernel_dtbs
 
 grep 'CONFIG_MODULES=y' $output_dir/.config > /dev/null && modules=modules
 if [[ x$modules == xmodules ]] ; then
-	eval $pmake ARCH=$arch O=$output_dir CROSS_COMPILE=$cross_compile $kbuild_options \
-		$modules
+	$pmake $kbuild_options KCFLAGS="$kcflags" $modules
 fi
 
 version=$(cat $output_dir/include/generated/utsrelease.h | cut -d '"' -f 2)
@@ -206,11 +209,15 @@ if [[ $image != FIT && $image != CrOS ]] ; then
 fi
 
 if [[ x$modules = xmodules ]] ; then
-	$pmake ARCH=$arch O=$output_dir CROSS_COMPILE=$cross_compile INSTALL_MOD_PATH=$target_dir modules_install
+	$pmake INSTALL_MOD_PATH=$target_dir modules_install
 fi
 
+#
+# Create the Debian package if requested
+#
+
 if [[ $do_package_deb = 1 ]] ; then
-	$pmake ARCH=$arch O=$output_dir CROSS_COMPILE=$cross_compile bindeb-pkg
+	$pmake bindeb-pkg
 fi
 
 #
-- 
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