On 22/7/18 3:11 am, Yuri Pankov wrote:
Yuri Pankov wrote:
Julian Elischer wrote:
I would really like ot get some pointers as to who are our tools
committers at the moment, in particular who might know about these
issues.
The main issue for me at the moment is the ability to compile the
aesni code in Samba from clang..
Julian
On 20/7/18 7:32 pm, Julian Elischer wrote:
compiling our samba with gcc 4.2.1 in 12 gave us some off behaviour
when lld became the linker I think..
1/ linking needed some directories added to some of the build
scripts because previously apparently it looked in $SYSROOT/usr/lib
by default and now it doesn't.
2/ compiling our samba produces a libtdb.so that has various symbols
in it, (according to nm(1) ), but when we try link against it we get
complaints about those symbols not being defined.
3/ an attempt to switch to using clang to compile everything
leads to:
"--aes-accel=intelaesni selected and compiler rejects
-Wp,-E,-lang-asm.
One wonders whether there is a clang equivalent of
"-Wp,-E,-lang-asm"
The AES acceleration is a configure option for the samba package.
Apparently turning it on requires -Wp,-E,-lang-asm.
which apparently gcc 4.2.1 has, but clang doesn't have.
FreeBSD clang version 6.0.1 (tags/RELEASE_601/final 335540)
(based
on LLVM 6.0.1)
Target: x86_64-unknown-freebsd12.0
Thread model: posix
InstalledDir: /usr/bin
anyone know if there is a clang equivalent of -Wp, -E,-lang-asm?
In later GCC versions the cpp's -lang-asm seems to be deprecated in
favor of -x assembler-with-cpp as it conflicts with -l option.
Could you try changing the -Wp,-E,-lang-asm to
-Wp,-E,-xassembler-with-cpp?
Just tried it myself, and if you indeed mean the
third_party/aesni-intel/aesni-intel_asm.c, the following seems to
work for me:
clang -xassembler-with-cpp -c third_party/aesni-intel/aesni-intel_asm.c
when I try it I get lots of errors due to hte fact that there are
assembled comments that start with #
and they are all cited as errors by clang.
I had to put '//' before about 80 lines line that.
possible work arrounds include:
1/ Get gcc/lld to produce a library from which lld can find the
symbols
2/ find a way to compile this with clang but everything else with
gcc?
3/ find a way to allow clang to use
-Wp,-E,-lang-asm
whatever that means
Thoughts from any tools people?
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