Messages in this thread | | | From | Robin Jarry <> | Subject | [PATCH v2 0/3] kbuild: fix host progs build with libs in non standard locations | Date | Mon, 26 Feb 2018 19:41:45 +0100 |
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This patchset allows to build host programs that depend on external libs installed in non standard locations (i.e. not in /usr/include, /usr/lib, etc.). For now, the only way is to force HOSTCC to include both the path to the host compiler and the build flags.
I have encountered this issue when building linux into the buildroot framework. host-* versions of libs may be compiled and installed in a host staging dir removing the need to install them on the build system.
I'm not really satisfied with the new HOST_{C,LD}FLAGS variables. They are too similar to HOST{C,LD}FLAGS and I find them confusing. However, HOST_EXTRA*FLAGS are already reserved for local use in makefiles (see Documentation/kbuild/makefiles.txt). And I didn't want to have even longer USER_HOST_*FLAGS. If someone has a better proposition, I'll happily make a v3.
Comments are welcome.
Changes since v1: - Fix typos. - Do not use HOST_EXTRA*FLAGS. Add new user specifiable variables. - Pass HOSTLDFLAGS to build single .c programs. - Build objtool with host flags.
Robin Jarry (3): kbuild: introduce HOST_{C,LD}FLAGS kbuild: use HOSTLDFLAGS for single .c executables objtool: use global host flags for compilation
Documentation/admin-guide/README.rst | 16 ++++++++++++++++ Makefile | 9 +++++---- scripts/Makefile.host | 2 +- tools/objtool/Makefile | 4 ++-- 4 files changed, 24 insertions(+), 7 deletions(-)
-- 2.11.0
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