Re: system clang based head -r334932 amd64 -> powerpc64 cross build: fatal error: 'altivec.h' file not found in stage 4.2 "building libraries"

On 2018-Jun-11, at 6:37 AM, Mark Millard <marklmi at yahoo.com> wrote:

> [Note: I sometimes build for powerpc families via clang
> as part of identifying what is not yet working. Currently
> I do not have access to any powerpc system so I only build.
> This involves using devel/powerpc-binutils currently.]
> 
> Despite for head -r334932:
> 
> # find /usr/src/* -name altivec.h -print 
> /usr/src/contrib/llvm/tools/clang/lib/Headers/altivec.h
> /usr/src/contrib/gcc/config/rs6000/altivec.h
> /usr/src/sys/powerpc/include/altivec.h

I should have noted someplace that the correct binding for the context
is for Lex/Lexer.cpp to find:

/usr/src/contrib/llvm/tools/clang/lib/Headers/altivec.h

and not one of the FreeBSD headers. (Very different content.)

> and:
> 
> # find /usr/obj/powerpc64vtsc_clang_altbinutils -name altivec.h -print
> /usr/obj/powerpc64vtsc_clang_altbinutils/powerpc.powerpc64/usr/src/powerpc.powerpc64/tmp/usr/include/machine/altivec.h
> /usr/obj/powerpc64vtsc_clang_altbinutils/powerpc.powerpc64/usr/src/powerpc.powerpc64/tmp/usr/lib/clang/6.0.0/include/altivec.h
> /usr/obj/powerpc64vtsc_clang_altbinutils/powerpc.powerpc64/usr/src/powerpc.powerpc64/obj-lib32/tmp/usr/include/machine/altivec.h
> 
> and:
> 
> # find /usr/local -name altivec.h -print
> /usr/local/lib/gcc/powerpc64-unknown-freebsd12.0/6.4.0/include/altivec.h
> /usr/local/llvm50/lib/clang/5.0.0/include/altivec.h
> /usr/local/llvm60/lib/clang/6.0.0/include/altivec.h
> 
> and use of clang/clang++:
> 
> # c++ --version
> FreeBSD clang version 6.0.0 (tags/RELEASE_600/final 326565) (based on LLVM 6.0.0)
> Target: x86_64-unknown-freebsd12.0
> Thread model: posix
> InstalledDir: /usr/bin
> 
> my attempt to amd64 -> powerpc64 cross build (-j4) got:
> 
> . . .
> Building /usr/obj/powerpc64vtsc_clang_altbinutils/powerpc.powerpc64/usr/src/powerpc.powerpc64/lib/clang/libclang/Lex/Lexer.o
> Building /usr/obj/powerpc64vtsc_clang_altbinutils/powerpc.powerpc64/usr/src/powerpc.powerpc64/lib/clang/libclang/Lex/LiteralSupport.o
> --- Lex/Lexer.o ---
> /usr/src/contrib/llvm/tools/clang/lib/Lex/Lexer.cpp:2401:10: fatal error: 'altivec.h' file not found
> #include <altivec.h>
>         ^~~~~~~~~~~
> 1 error generated.
> *** [Lex/Lexer.o] Error code 1
> 
> make[6]: stopped in /usr/src/lib/clang/libclang
> .ERROR_TARGET='Lex/Lexer.o'
> .ERROR_META_FILE='/usr/obj/powerpc64vtsc_clang_altbinutils/powerpc.powerpc64/usr/src/powerpc.powerpc64/lib/clang/libclang/Lex_Lexer.o.meta'
> .MAKE.LEVEL='6'
> MAKEFILE=''
> .MAKE.MODE='meta missing-filemon=yes missing-meta=yes silent=yes verbose'
> _ERROR_CMD='c++  -target powerpc64-unknown-freebsd12.0 --sysroot=/usr/obj/powerpc64vtsc_clang_altbinutils/powerpc.powerpc64/usr/src/powerpc.powerpc64/tmp -B/usr/local/powerpc64-unknown-freebsd12.0/bin/  -O2 -pipe -I/usr/obj/powerpc64vtsc_clang_altbinutils/powerpc.powerpc64/usr/src/powerpc.powerpc64/lib/clang/libclang -I/usr/obj/powerpc64vtsc_clang_altbinutils/powerpc.powerpc64/usr/src/powerpc.powerpc64/lib/clang/libllvm -I/usr/src/contrib/llvm/tools/clang/lib/Basic -I/usr/src/contrib/llvm/tools/clang/lib/Driver -I/usr/src/contrib/llvm/tools/clang/include -DCLANG_ENABLE_ARCMT -DCLANG_ENABLE_STATIC_ANALYZER -I/usr/src/lib/clang/include -I/usr/src/contrib/llvm/include -DLLVM_BUILD_GLOBAL_ISEL -D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS -DLLVM_DEFAULT_TARGET_TRIPLE=\"powerpc64-unknown-fre
 ebsd12.0\" -DLLVM_HOST_TRIPLE=\"powerpc64-unknown-freebsd12.0\" -DDEFAULT_SYSROOT=\"\" -ffunction-sections -fdata-sections -gline-tables-only -fstack-protector-strong -Qunused-arguments  -std=c++11 
 -fno-exceptions -fno-rtti -gline-tables-only -stdlib=libc++ -Wno-c++11-extensions  -c /usr/src/contrib/llvm/tools/clang/lib/Lex/Lexer.cpp -o Lex/Lexer.o;'
> .CURDIR='/usr/src/lib/clang/libclang'
> .MAKE='make'
> .OBJDIR='/usr/obj/powerpc64vtsc_clang_altbinutils/powerpc.powerpc64/usr/src/powerpc.powerpc64/lib/clang/libclang'
> .TARGETS='all'
> DESTDIR='/usr/obj/powerpc64vtsc_clang_altbinutils/powerpc.powerpc64/usr/src/powerpc.powerpc64/tmp'
> LD_LIBRARY_PATH=''
> MACHINE='powerpc'
> MACHINE_ARCH='powerpc64'
> MAKEOBJDIRPREFIX=''
> MAKESYSPATH='/usr/src/share/mk'
> MAKE_VERSION='20180512'
> PATH='/usr/obj/powerpc64vtsc_clang_altbinutils/powerpc.powerpc64/usr/src/powerpc.powerpc64/tmp/legacy/usr/sbin:/usr/obj/powerpc64vtsc_clang_altbinutils/powerpc.powerpc64/usr/src/powerpc.powerpc64/tmp/legacy/usr/bin:/usr/obj/powerpc64vtsc_clang_altbinutils/powerpc.powerpc64/usr/src/powerpc.powerpc64/tmp/legacy/bin:/usr/obj/powerpc64vtsc_clang_altbinutils/powerpc.powerpc64/usr/src/powerpc.powerpc64/tmp/usr/sbin:/usr/obj/powerpc64vtsc_clang_altbinutils/powerpc.powerpc64/usr/src/powerpc.powerpc64/tmp/usr/bin:/sbin:/bin:/usr/sbin:/usr/bin'
> SRCTOP='/usr/src'
> OBJTOP='/usr/obj/powerpc64vtsc_clang_altbinutils/powerpc.powerpc64/usr/src/powerpc.powerpc64'
> .MAKE.MAKEFILES='/usr/src/share/mk/sys.mk /usr/src/share/mk/local.sys.env.mk /usr/src/share/mk/src.sys.env.mk /root/src.configs/src.conf.powerpc64-clang_altbinutils-bootstrap.amd64-host /usr/src/share/mk/bsd.mkopt.mk /usr/src/share/mk/src.sys.obj.mk /usr/src/share/mk/auto.obj.mk /usr/src/share/mk/bsd.suffixes.mk /root/src.configs/make.conf /usr/src/share/mk/local.sys.mk /usr/src/share/mk/src.sys.mk /dev/null /usr/src/lib/clang/libclang/Makefile /usr/src/share/mk/src.opts.mk /usr/src/share/mk/bsd.own.mk /usr/src/share/mk/bsd.opts.mk /usr/src/share/mk/bsd.cpu.mk /usr/src/share/mk/bsd.compiler.mk /usr/src/share/mk/bsd.linker.mk /usr/src/lib/clang/clang.pre.mk /usr/src/lib/clang/llvm.pre.mk /usr/src/lib/clang/clang.build.mk /usr/src/lib/clang/llvm.build.mk /usr/src/share/mk/bsd.lib.mk /usr/s
 rc/share/mk/bsd.init.mk /usr/src/share/mk/local.init.mk /usr/src/share/mk/src.init.mk /usr/src/lib/clang/libclang/../Makefile.inc /usr/src/share/mk/bsd.libnames.mk /usr/src/share/mk/src.libnames.mk 
 /usr/src/share/mk/bsd.symver.mk /usr/src/share/mk/bsd.nls.mk /usr/src/share/mk/bsd.files.mk /usr/src/share/mk/bsd.incs.mk /usr/src/share/mk/bsd.confs.mk /usr/src/share/mk/bsd.links.mk /usr/src/share/mk/bsd.dep.mk /usr/src/share/mk/bsd.clang-analyze.mk /usr/src/share/mk/bsd.obj.mk /usr/src/share/mk/bsd.subdir.mk /usr/src/share/mk/bsd.sys.mk'
> .PATH='. /usr/src/lib/clang/libclang /usr/src/contrib/llvm/tools/clang/lib'
> 1 error
> 
> 
> I'll note that the -I's for include/'s:
> 
> -I/usr/src/contrib/llvm/tools/clang/include
> -I/usr/src/lib/clang/include
> -I/usr/src/contrib/llvm/include

So:

/usr/src/contrib/llvm/tools/clang/lib/Headers

is missing and is where altivec.h should be found for
the include in Lex/Lexer.cpp .

It is too bad that the altivec.h naming matches between
clang-internal headers and FreeBSD headers, making
correct selection messier to deal with.

The code in Lx/Lexer.cpp looks like:

#ifdef __SSE2__
#include <emmintrin.h>
#elif __ALTIVEC__
#include <altivec.h>
#undef bool
#endif


> do not seem to match up with any of:
> 
> /usr/src/contrib/llvm/tools/clang/lib/Headers/
> /usr/src/sys/powerpc/include/
> /usr/obj/powerpc64vtsc_clang_altbinutils/powerpc.powerpc64/usr/src/powerpc.powerpc64/tmp/usr/include/machine/altivec.h
> /usr/obj/powerpc64vtsc_clang_altbinutils/powerpc.powerpc64/usr/src/powerpc.powerpc64/tmp/usr/lib/clang/6.0.0/include/altivec.h
> /usr/obj/powerpc64vtsc_clang_altbinutils/powerpc.powerpc64/usr/src/powerpc.powerpc64/obj-lib32/tmp/usr/include/machine/altivec.h
> 
> 
> For reference:
> 
> # more ~/src.configs/src.conf.powerpc64-clang_altbinutils-bootstrap.amd64-host 
> TO_TYPE=powerpc64
> TOOLS_TO_TYPE=${TO_TYPE}
> VERSION_CONTEXT=12.0
> #
> KERNCONF=GENERIC64vtsc-NODBG
> TARGET=powerpc
> .if ${.MAKE.LEVEL} == 0
> TARGET_ARCH=${TO_TYPE}
> .export TARGET_ARCH
> .endif
> #
> WITH_CROSS_COMPILER=
> WITHOUT_SYSTEM_COMPILER=
> #
> WITH_LIBCPLUSPLUS=
> WITHOUT_BINUTILS_BOOTSTRAP=
> WITH_ELFTOOLCHAIN_BOOTSTRAP=
> WITH_CLANG_BOOTSTRAP=
> WITH_CLANG=
> #WITH_CLANG_IS_CC=
> WITH_CLANG_FULL=
> WITH_CLANG_EXTRAS=
> WITHOUT_LLD_BOOTSTRAP=
> WITH_LLD=
> WITHOUT_LLD_IS_LD=
> WITH_LLDB=
> #
> WITH_BOOT=
> # avoid lang/gcc7 and the like attempting
> # lib32 (-m32) support that does not work.
> # (Register usage mismatch?)
> WITHOUT_LIB32=
> #
> WITHOUT_CLANG_IS_CC=
> WITHOUT_BINUTILS=
> WITHOUT_GCC_BOOTSTRAP=
> WITHOUT_GCC=
> WITHOUT_GCC_IS_CC=
> WITHOUT_GNUCXX=
> #
> NO_WERROR=
> MALLOC_PRODUCTION=
> #
> # Avoid converts between pointers to integer types with different sign [-Werror,-Wpointer-sign]
> # and such from blocking the build.
> WERROR=
> #
> WITH_REPRODUCIBLE_BUILD=
> WITH_DEBUG_FILES=
> #
> #
> # For TO (so-called "cross") stages . . .
> # So-called-cross via ${TO_TYPE}-xtoolchain-gcc/${TO_TYPE}-gcc. . .
> # TOOLS_TO_TYPE based on ${TO_TYPE}-xtoolchain-gcc related binutils. . .
> #
> CROSS_BINUTILS_PREFIX=/usr/local/${TOOLS_TO_TYPE}-unknown-freebsd${VERSION_CONTEXT}/bin/
> .if ${.MAKE.LEVEL} == 0
> #
> # Note: The WITH_CROSS_COMPILER picks up the CROSS_BINUTILS_PREFIX
> #       binding automatically.
> #
> XAS=/usr/local/${TOOLS_TO_TYPE}-unknown-freebsd${VERSION_CONTEXT}/bin/as
> XAR=/usr/local/${TOOLS_TO_TYPE}-unknown-freebsd${VERSION_CONTEXT}/bin/ar
> XNM=/usr/local/${TOOLS_TO_TYPE}-unknown-freebsd${VERSION_CONTEXT}/bin/nm
> XOBJCOPY=/usr/local/${TOOLS_TO_TYPE}-unknown-freebsd${VERSION_CONTEXT}/bin/objcopy
> XOBJDUMP=/usr/local/${TOOLS_TO_TYPE}-unknown-freebsd${VERSION_CONTEXT}/bin/objdump
> XRANLIB=/usr/local/${TOOLS_TO_TYPE}-unknown-freebsd${VERSION_CONTEXT}/bin/ranlib
> XSIZE=/usr/local/${TOOLS_TO_TYPE}-unknown-freebsd${VERSION_CONTEXT}/bin/size
> #NO-SUCH: XSTRINGS=/usr/local/${TOOLS_TO_TYPE}-unknown-freebsd${VERSION_CONTEXT}/bin/strings
> XSTRINGS=/usr/local/bin/${TOOLS_TO_TYPE}-unknown-freebsd${VERSION_CONTEXT}-strings
> .export XAS
> .export XAR
> .export XNM
> .export XOBJCOPY
> .export XOBJDUMP
> .export XRANLIB
> .export XSIZE
> .export XSTRINGS
> XLD=/usr/local/${TOOLS_TO_TYPE}-unknown-freebsd${VERSION_CONTEXT}/bin/ld
> .export XLD
> .endif
> 
> # more ~/src.configs/make.conf 
> CFLAGS.gcc+= -v
> 
> # more ~/sys_build_scripts.amd64-host/make_powerpc64vtsc_nodebug_clang_altbinutils-amd64-host.sh 
> kldload -n filemon && \
> script ~/sys_typescripts/typescript_make_powerpc64vtsc_nodebug_clang_altbinutils-amd64-host-$(date +%Y-%m-%d:%H:%M:%S) \
> env __MAKE_CONF="/root/src.configs/make.conf" SRCCONF="/dev/null" SRC_ENV_CONF="/root/src.configs/src.conf.powerpc64-clang_altbinutils-bootstrap.amd64-host" \
> WITH_META_MODE=yes \
> MAKEOBJDIRPREFIX="/usr/obj/powerpc64vtsc_clang_altbinutils/powerpc.powerpc64" \
> make $*
> 


===
Mark Millard
marklmi at yahoo.com
( dsl-only.net went
away in early 2018-Mar)

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