flags and target

llvm 6.0.1

bash-4.3# gcc -dumpversion
5.5.0
bash-4.3# gcc -dumpmachine
i586-slackware-linux
bash-4.3# llvm-config --host-target
i686-pc-linux-gnu
bash-4.3#

using gcc to build (code change for Makefile.in)

tests/external.test (external-1 and external-2) will obviously fail without the change to LLVMTARGET

- LLVMCFLAGS = `${LLVMCONFIG} --cxxflags`
+ LLVMCFLAGS = `${LLVMCONFIG} --cxxflags | sed \
+  's/ -Werror=unguarded-availability-new//;s/ -Wcovered-switch-default//;s/ -Wstring-conversion//'`

- LLVMTARGET = `${LLVMCONFIG} --host-target`
+ LLVMTARGET = `${CC} -dumpmachine`

bash-4.3# grep "i686-pc-linux-gnu" /tmp/llvmtcl-3.9.2/libllvmtcl3.9.2.so
bash-4.3# grep "i586-slackware-linux" /tmp/llvmtcl-3.9.2/libllvmtcl3.9.2.so
Binary file /tmp/llvmtcl-3.9.2/libllvmtcl3.9.2.so matches
bash-4.3#

cf: https://nurmi-labs.blogspot.com/2019/04/tclquadcode.html

Can someone clarify running another Linux distribution and architecture what the following outputs?

gcc -dumpmachine

llvm-config --host-target

I cannot say what those commands (and 'clang --version') will output in terms of triples, on for example Red Hat and S.u.S.E., which are listed along with Slackware and a couple of other distributions, as having distribution specific triples in the following file.

cfe-6.0.1.src/lib/Driver/ToolChains/Gnu.cpp

Certainly, other software which has a dependency upon the Slackware Linux distributions' builds of llvm are not having a problem resultant of such triple disparity; so I wouldn't even consider a recompile [for different triples, if that were even feasible (?)] of llvm for Slackware and Slackware64 Linux.

Incidentally it's not clear why LLVMCFLAGS is used as a variable essentially for LLVMCXXFLAGS.

There seems to be triple disparity on Debian-based distributions.

$ gcc -dumpmachine
x86_64-linux-gnu
$ llvm-config --host-target
x86_64-pc-linux-gnu
$

Anyone running Red Hat or S.u.S.E.?

[dkfellows]

In any case, the value that's needed is the one that LLVM accepts and lets us build code for the host system.