After backtracking (using BLFS-8.1 on LFS-8.1) I still get the same compilation error. I managed to find a "nasty" workaround, which pass compilation (and the the tests), but this suggests something has gone amiss with my g++ installation. The workaround was to use full paths for the failing #include_next lines:
/usr/include/c++/7.2.0/bits/std_abs.h: [from] '#include_next <stdlib.h>' [to] '#include_next </usr/include/c++/7.2.0/stdlib.h>' /usr/include/c++/7.2.0/cmath: [from] '#include_next <math.h>' [to] '#include_next </usr/include/c++/7.2.0/math.h>' /usr/include/c++/7.2.0/bits/cstdlib: [from] '#include_next <stdlib.h>' [to] '#include_next </usr/include/c++/7.2.0/stdlib.h>' This is very ugly, but it worked. I can't figure out what has gone wrong, some path or link is broken, is the vague idea I have. Incidentally I had tried setting CXX=clang, there the compilation worked but the linking failed. I can proceed from here but it feels like the '/usr/include/c++' installation is slightly broken. Thanks Graham On Sun, 2018-04-01 at 19:13 +0200, Graham Crowe wrote: > You remark about the g++-7.2.0 was very helpful. I now realise I have > committed the most basic baseline mistake. I had installed LFS-8.1, > and > had just started using BLFS-8.2, where new versions of libdrm and > mesa > are used. I need to backtrack and align to BLFS-8.1. > > Thanks > Graham > > On Sat, 2018-03-31 at 22:08 +0100, Ken Moffat wrote: > > On Sat, Mar 31, 2018 at 09:18:46PM +0200, Graham Crowe wrote: > > > Hi, > > > > > > I get the following compile error: > > > > > > make[4]: Entering directory '/xc/mesa-17.3.4/src/compiler' > > > CXX glsl_types.lo > > > In file included from ../../include/c99_math.h:194:0, > > > from > > > ../../src/gallium/auxiliary/util/u_math.h:44, > > > from ../../src/mesa/main/macros.h:35, > > > from glsl_types.cpp:25: > > > /usr/include/c++/7.2.0/cmath:45:15: fatal error: math.h: No such > > > file > > > > ^^^^^ > > > or directory > > > > I have no idea why your build would be looking for files from > > g++-7.2.0 : the LFS and BLFS 8.2 books use 7.3.0. > > > > Are you building BLFS on LFS-8.2 ? Have you interrupted the build, > > or used extra CFLAGS or CXXFLAGS ? > > > > > #include_next <math.h> > > > ^~~~~~~~ > > > > > > I'm not really familiar with the C++ #include_next functionality > > > but > > > have understood that the problem here is include search path > > > related. > > > Taking a closer look at config.log I noticed several errors, even > > > though the configure step appeared to work: > > > llvm-config: error: missing: /usr/lib/libLLVMDemangle.so > > > : : : > > > > > > > In the absence of llvm, that would just be configure giving you a > > slightly misleading error message sbout what was missing. I > > haven't > > built mesa without llvm and clang for some time, because firefox > > now > > requires clang (Compiler RT seems to be not-required for the > > packages I normally build). > > > > And the book has a big Note after listing the optional > > dependencies: > > > > The instructions below assume that LLVM with the r600/amdgpu and > > host > > backends are installed. You will need to modify the instructions if > > you choose not to install it. For an explanation of Gallium3D see > > https://en.wikipedia.org/wiki/Gallium3D. > > > > > So I tried installing llvm (with Clang and Compiler RT). Then I > > > got > > > a > > > similar error compiling llvm (stdlib.h could not be found). It > > > seems > > > like my build environment no longer supports C++. Any ideas, I'm > > > really > > > quite stuck. > > > > > > Thanks > > > Graham > > > > > > p.s. Incidentally I had to install libdrm, wayland and wayland- > > > protocol > > > before the configure step for mesa succeeded. I have a back up my > > > LFS > > > system rootfs prior to attempting the Xorg installation. > > > > Well, libdrm is shown as 'required' and wayland-protocols is shown > > as 'recommended' (and requires wayland). 'Required' means what it > > says, 'recommended' means you might be able to avoid it if you > > change the commands. In this case you could have removed it from > > the --with-platforms switch. > > > > ĸen > > -- > > Before the universe began, there was a sound. It went: "One, two, > > ONE, > > two, three, four" [...] The cataclysmic power chord that followed > > was > > the creation of time and space and matter and it does Not Fade > > Away. > > - wiki.lspace.org/mediawiki/Music_With_Rocks_In > > > > -- http://lists.linuxfromscratch.org/listinfo/blfs-support FAQ: http://www.linuxfromscratch.org/blfs/faq.html Unsubscribe: See the above information page
