From 907d7d747243044f86588f0d82993e8c106cb02c Mon Sep 17 00:00:00 2001 From: =?utf8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Wed, 15 Jun 2022 12:36:36 +0200 Subject: [PATCH] kernel: support setting extra CFLAGS for kernel compilation MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit They may be used e.g. to optimize kernel size or performance. Signed-off-by: Rafał Miłecki --- config/Config-devel.in | 4 ++++ include/kernel.mk | 2 +- 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/config/Config-devel.in b/config/Config-devel.in index 126462bfc3..a068f694e5 100644 --- a/config/Config-devel.in +++ b/config/Config-devel.in @@ -74,6 +74,10 @@ menuconfig DEVEL Store ccache in this directory. If not set, uses './.ccache' + config KERNEL_CFLAGS + string "Kernel extra CFLAGS" if DEVEL + default "" + config EXTERNAL_KERNEL_TREE string "Use external kernel tree" if DEVEL default "" diff --git a/include/kernel.mk b/include/kernel.mk index ffc9ea5260..d99dd0a534 100644 --- a/include/kernel.mk +++ b/include/kernel.mk @@ -101,7 +101,7 @@ endif KERNEL_MAKE = $(MAKE) $(KERNEL_MAKEOPTS) KERNEL_MAKE_FLAGS = \ - KCFLAGS="$(call iremap,$(BUILD_DIR),$(notdir $(BUILD_DIR))) $(call qstrip,$(CONFIG_EXTRA_OPTIMIZATION))" \ + KCFLAGS="$(call iremap,$(BUILD_DIR),$(notdir $(BUILD_DIR))) $(call qstrip,$(CONFIG_EXTRA_OPTIMIZATION)) $(call qstrip,$(CONFIG_KERNEL_CFLAGS))" \ HOSTCFLAGS="$(HOST_CFLAGS) -Wall -Wmissing-prototypes -Wstrict-prototypes" \ CROSS_COMPILE="$(KERNEL_CROSS)" \ ARCH="$(LINUX_KARCH)" \ -- 2.30.2