Re: Configure errors

I agree. The alarming trace is due to the verbosity being too high. I’ve opened #23794 to track lowering the verbosity. Then we should get a simpler trace, like the configure one. Rodrigo

On 7 Aug 2023, at 11:11, Simon Peyton Jones wrote:

But the other tests look like

checking for gnutar... no checking for gtar... no checking for tar... /usr/bin/tar checking for gpatch... no checking for patch... /usr/bin/patch checking for autoreconf... /usr/bin/autoreconf

Can't you say

checking for -Qunused-arguments... no

You can explain this to me, now, and that helps me, today. But I'm trying to save you from having to explain it to many future GHC devs, and/or save them time in hunting for answers to the same question.

No rush

Simon

On Mon, 7 Aug 2023 at 11:07, Rodrigo Mesquita mailto:rodrigo.m.mesquita@gmail.com> wrote:

...

The trace is akin to the configure trace — it shows invocations of the toolchain in trying to determine properties of said toolchain e.g. which flags are supported.

For example

...

checking for -Qunused-arguments support... Entering: checking for -Qunused-arguments support Execute: /usr/bin/gcc -Qunused-arguments -c -o /tmp/tmp0/test.o /tmp/tmp0/test.o.c Command failed: /usr/bin/gcc -Qunused-arguments -c -o /tmp/tmp0/test.o /tmp/tmp0/test.o.c Exited with code 1 found for -Qunused-arguments support: Cc {ccProgram = Program {prgPath = "/usr/bin/gcc", prgFlags = []}}

Is the trace of invoking the C compiler with -Qunused-arguments, checking whether the C compiler supports such an option. That command exited with code 1 likely because the compiler doesn’t indeed support -Qunused-arguments. That’s fine, it means we won’t pass -Qunused-arguments to your C compiler.

Rodrigo

...

On 7 Aug 2023, at 10:50, Simon Peyton Jones mailto:simon.peytonjones@gmail.com> wrote:

Rodrigo

I'm getting lots of errors from ./configure, see below.

Seems to be something to do with your toolchain stuff? I'm lost. Should I worry? If not, could they be made to look less alarming somehow?

Simon

Entering: checking for C compiler checking for -Qunused-arguments support... Entering: checking for -Qunused-arguments support Execute: /usr/bin/gcc -Qunused-arguments -c -o /tmp/tmp0/test.o /tmp/tmp0/test.o.c Command failed: /usr/bin/gcc -Qunused-arguments -c -o /tmp/tmp0/test.o /tmp/tmp0/test.o.c Exited with code 1

found for -Qunused-arguments support: Cc {ccProgram = Program {prgPath = "/usr/bin/gcc", prgFlags = []}} checking whether Cc supports --target... Entering: checking whether Cc supports --target Execute: /usr/bin/gcc -Werror --target=x86_64-unknown-linux -c -o /tmp/tmp0/test.o /tmp/tmp0/test.o.c Command failed: /usr/bin/gcc -Werror --target=x86_64-unknown-linux -c -o /tmp/tmp0/test.o /tmp/tmp0/test.o.c Exited with code 1

found whether Cc supports --target: Cc {ccProgram = Program {prgPath = "/usr/bin/gcc", prgFlags = []}} checking whether Cc works... Entering: checking whether Cc works Execute: /usr/bin/gcc -c -o /tmp/tmp0/test.o /tmp/tmp0/test.o.c found whether Cc works: () checking for C99 support... Entering: checking for C99 support Execute: /usr/bin/gcc -c -o /tmp/tmp0/test.o /tmp/tmp0/test.o.c found for C99 support: () checking whether cc supports extra via-c flags... Entering: checking whether cc supports extra via-c flags Execute: /usr/bin/gcc -c -fwrapv -fno-builtin -Werror -x c -o /tmp/tmp0/test.o /tmp/tmp0/test.c found whether cc supports extra via-c flags: () found for C compiler: Cc {ccProgram = Program {prgPath = "/usr/bin/gcc", prgFlags = []}} checking for C++ compiler... Entering: checking for C++ compiler x86_64-unknown-linux-g++ not found in search path x86_64-unknown-linux-clang++ not found in search path x86_64-unknown-linux-c++ not found in search path checking whether C++ supports --target... Entering: checking whether C++ supports --target Execute: /usr/bin/g++ -Werror --target=x86_64-unknown-linux -c -o /tmp/tmp0/test.o /tmp/tmp0/test.o.cpp Command failed: /usr/bin/g++ -Werror --target=x86_64-unknown-linux -c -o /tmp/tmp0/test.o /tmp/tmp0/test.o.cpp Exited with code 1

found whether C++ supports --target: Cxx {cxxProgram = Program {prgPath = "/usr/bin/g++", prgFlags = []}} Execute: /usr/bin/g++ -c -o /tmp/tmp0/test.o /tmp/tmp0/test.o.cpp found for C++ compiler: Cxx {cxxProgram = Program {prgPath = "/usr/bin/g++", prgFlags = []}} checking for C preprocessor...