On Mon, Feb 28, 2022 at 8:17 AM Stijn Tintel <st...@linux-ipv6.be> wrote: > > On 28/02/2022 16:16, Ansuel Smith wrote: > >> On 27/02/2022 17:20, Ansuel Smith wrote: > >>> > > >>>> From: Tony Ambardar <itug...@yahoo.com> > >>>> > >>>> dwarves is a set of tools that use the debugging information inserted in > >>>> ELF binaries by compilers such as GCC. Utilities in the dwarves suite > >>>> include pahole, which can be used to find alignment holes in structs and > >>>> classes, and also extracts other information such as CPU cacheline > >>>> alignment, helping pack those structures to achieve more cache hits. > >>>> > >>>> These tools are also used to encode and read the BTF type information > >>>> format used with the bpf syscall, making this a Linux build dependency > >>>> when using kernel BTF information. > >>> BTW this fails to build if libdw-dev is not installed with > >>> > >>> -- Checking availability of DWARF and ELF development libraries > >>> -- Could NOT find dwarf include dir > >>> -- Could NOT find libdw include dir > >>> -- Could NOT find libdw library > >>> CMake Error at cmake/modules/FindDWARF.cmake:93 (message): > >>> Could NOT find some ELF and DWARF libraries, please install the missing > >>> packages > >>> Call Stack (most recent call first): > >>> CMakeLists.txt:60 (find_package) > >>> > >>> ERROR: tools/dwarves failed to build. > >>> > >>> Should we add it to the build prereq? > >> Please try this instead: > >> > >> diff --git a/tools/dwarves/Makefile b/tools/dwarves/Makefile > >> index b02a2398a1..e5a55706be 100644 > >> --- a/tools/dwarves/Makefile > >> +++ b/tools/dwarves/Makefile > >> @@ -12,14 +12,12 @@PKG_LICENSE:=GPL-2.0-only > >> PKG_LICENSE_FILES:=COPYING > >> > >> HOST_BUILD_PARALLEL:=1 > >> +PKG_BUILD_DEPENDS:=elfutils/host > >> > >> include $(INCLUDE_DIR)/host-build.mk > >> include $(INCLUDE_DIR)/cmake.mk > >> > >> CMAKE_HOST_OPTIONS += \ > >> - -DCMAKE_FIND_ROOT_PATH_MODE_INCLUDE=BOTH \ > >> - -DCMAKE_FIND_ROOT_PATH_MODE_LIBRARY=BOTH \ > >> - -DCMAKE_BUILD_TYPE=Release \ > >> -D__LIB=lib \ > >> -DCMAKE_INSTALL_RPATH="$(STAGING_DIR_HOST)/lib" \ > >> -DCMAKE_SKIP_RPATH=FALSE > >> > >> Thanks, > >> Stijn > >> > > No luck... still > > > Apparently we cannot use PKG_BUILD_DEPENDS or HOST_BUILD_DEPENDS in > tools/, as this is handled in include/package-dumpinfo.mk, which is > included from include/package.mk, which we don't include in tools/... > Could use some guidance here, as I am not familiar enough with this part > of the code. depends for tools/ are specified in tools/Makefile. Which means it requires tools/elfutils > > Thanks, > Stijn > > > _______________________________________________ > openwrt-devel mailing list > openwrt-devel@lists.openwrt.org > https://lists.openwrt.org/mailman/listinfo/openwrt-devel
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