[PATCH 01/12] kconfig: implement CONFIG_HEADERS_INSTALL for Usermode Linux
From: Thomas Weißschuh <hidden>
Date: 2025-02-17 11:00:37
Also in:
linux-kbuild, linux-kselftest, lkml
Subsystem:
kernel build + files below scripts/ (unless maintained elsewhere), library code, the rest · Maintainers:
Nathan Chancellor, Nicolas Schier, Andrew Morton, Linus Torvalds
userprogs sometimes need access to UAPI headers. This is currently not possible for Usermode Linux, as UM is only a pseudo architecture built on top of a regular architecture and does not have its own UAPI. Instead use the UAPI headers from the underlying regular architecture. Signed-off-by: Thomas Weißschuh <redacted> --- Makefile | 5 ++++- lib/Kconfig.debug | 1 - 2 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/Makefile b/Makefile
index b4c208ae4041c1f4e32c2a158322422ce7353d06..275185d2ff5d3dc99bd7982abd1de85af0b9621a 100644
--- a/Makefile
+++ b/Makefile@@ -1357,9 +1357,12 @@ hdr-inst := -f $(srctree)/scripts/Makefile.headersinst obj PHONY += headers headers: $(version_h) scripts_unifdef uapi-asm-generic archheaders archscripts - $(if $(filter um, $(SRCARCH)), $(error Headers not exportable for UML)) +ifdef HEADER_ARCH + $(Q)$(MAKE) -f $(srctree)/Makefile HEADER_ARCH= SRCARCH=$(HEADER_ARCH) headers +else $(Q)$(MAKE) $(hdr-inst)=include/uapi $(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARCH)/include/uapi +endif ifdef CONFIG_HEADERS_INSTALL prepare: headers
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 1af972a92d06f6e3f7beec4bd086c00b412c83ac..60026c8388db82c0055ccd8b8ac8789d6b939b62 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug@@ -473,7 +473,6 @@ config READABLE_ASM config HEADERS_INSTALL bool "Install uapi headers to usr/include" - depends on !UML help This option will install uapi headers (headers exported to user-space) into the usr/include directory for use during the kernel build.
--
2.48.1