Open fendor opened 4 years ago
Hey, I got essentially the same error — but for a totally different reason.
In my case, the project is pre-built and cabal_macros.h
is in place.
What trips gcc
is malformed invocation.
[...]
/home/ulidtko/src/company/on-server/.stack-work/cabal-helper/cabal-helper /home/ulidtko/src/company/on-server/metrics/metrics.cabal /home/ulidtko/src/company/on-server/metrics/.stack-work/dist/x86_64-linux-tinfo6/Cabal-2.4.0.1 v2 package-id compiler-id flags config-flags non-default-config-flags component-info
gcc -E -undef -traditional -include .stack-work/dist/x86_64-linux-tinfo6/Cabal-2.4.0.1/build/autogen/cabal_macros.h -Wno-nonportable-include-path -Werror -I.stack-work/dist/x86_64-linux-tinfo6/Cabal-2.4.0.1/build -I.stack-work/dist/x86_64-linux-tinfo6/Cabal-2.4.0.1/build -I.stack-work/dist/x86_64-linux-tinfo6/Cabal-2.4.0.1/build/autogen -I.stack-work/dist/x86_64-linux-tinfo6/Cabal-2.4.0.1/build/global-autogen -I.stack-work/dist/x86_64-linux-tinfo6/Cabal-2.4.0.1/build -I/home/ulidtko/.stack/snapshots/x86_64-linux-tinfo6/474b6b844ef14a4f807e7e8e701da8a55bd48660fed10431b2f5fdc356c47ba4/8.6.5/lib/x86_64-linux-ghc-8.6.5/old-time-1.1.0.3-2XkcGgLYS3G4Bt8PCBG9iL/include -I/home/ulidtko/.stack/snapshots/x86_64-linux-tinfo6/474b6b844ef14a4f807e7e8e701da8a55bd48660fed10431b2f5fdc356c47ba4/8.6.5/lib/x86_64-linux-ghc-8.6.5/unix-compat-0.5.2-5CtkYVRMw4V15TQn19NMXa/include -I/home/ulidtko/.stack/programs/x86_64-linux/ghc-tinfo6-8.6.5/lib/ghc-8.6.5/process-1.6.5.0/include
Which, if retried by hand, barfs:
gcc: fatal error: no input files compilation terminated. $ echo $? 1
There indeed appear no input-file arguments in that gcc
call (which comes from I don't know where).
Thoughts?
OK, I still don't know what I'm doing, but at least I understand why the preprocessor call is failing.
This is apparently incorrect way to use -include
. Trivial repro:
$ echo '#warning "Foobar"' > /tmp/test.h
$
$ gcc -E -undef -include /tmp/test.h
gcc: fatal error: no input files
compilation terminated.
Correct call:
$ gcc -E -undef -include /tmp/test.h - < /dev/null
This hasn't changed any time recently (tested the same behavior across the 3 latest major releases of GCC: 8.4.0, 9.3.0, 10.1.0), and not a bug per man gcc
:
-include file Process file as if "#include "file"" appeared as the first line of the primary source file.
No primary source file -- nothing to process; fatal error.
What's left is to understand where the preprocessor is invoked from. And why that code is trying to use -include [...]/cabal_macros.h
instead of passing [...]/cabal_macros.h
directly (which works).
Any hints appreciated.
@jneira found that it happens on our install script project when you have never built it before.
Steps to reproduce:
or, if project is already cloned
where
code .
is just an arbitrary lsp-client.In the project
hie-install
, the cradleCabal-Helper-v2
will be selected due to the presence ofcabal.project
. Simply opening any haskell source file in the project will lead to the described error message. Error is specifically that acabal_macros.h
can not be found, which is not generated when c-h initialises the project context. Workaround: usestack build
andcabal build
respectively to generate this file.EDIT: adding a
hie.yaml
works for me as expected even when the project has never been built before.Originally posted by @fendor in https://github.com/mpickering/haskell-ide-engine/issues/47#issuecomment-555151240
Related issue https://github.com/haskell/cabal/issues/2209.