meson and NVIDIA HPC SDK

[icamps]

Describe the bug
Running meson.build.txt with NVIDIA HPC compilers returned:

meson/meson.build:168:12: ERROR: Delimiters not found in preprocessor output.

    This is a Meson bug and should be reported!

To Reproduce
File included. It is part of the xTB software.

Expected behavior
Compile without any issue.

system parameters

• Is this a cross build or just a plain native build (for the same computer)?
  native build

• what operating system (e.g. MacOS Catalina, Windows 10, CentOS 8.0, Ubuntu 18.04, etc.)
  Ubuntu 22.04.4 LTS

• what Python version are you using e.g. 3.8.0
  3.12.2

• what meson --version
  1.4.0

• what ninja --version if it's a Ninja build
  1.10.1

[eli-schwartz]

The uploaded file is incorrect. The error message says it is this meson.build file in a subdirectory to blame:

https://github.com/grimme-lab/xtb/blob/v6.7.0/meson/meson.build#L168

  omp_dep = dependency('openmp', required: fc.get_id() != 'intel' and fc.get_id() != 'nvidia_hpc')

This comes from:

meson/mesonbuild/dependencies/misc.py

Lines 108 to 113 in 7d28ff2

	openmp_date = self.clib_compiler.get_define(
	'_OPENMP', '', self.env, self.clib_compiler.openmp_flags(), [self], disable_cache=True)[0]
	except mesonlib.EnvironmentException as e:
	mlog.debug('OpenMP support not available in the compiler')
	mlog.debug(e)
	openmp_date = None

get_define raises this:

meson/mesonbuild/compilers/mixins/clike.py

Lines 664 to 669 in 7d28ff2

	# Get the preprocessed value between the delimiters
	star_idx = p.stdout.find(delim_start)
	end_idx = p.stdout.rfind(delim_end)
	if (star_idx == -1) or (end_idx == -1) or (star_idx == end_idx):
	raise mesonlib.MesonBugException('Delimiters not found in preprocessor output.')
	define_value = p.stdout[star_idx + len(delim_start):end_idx]

@icamps please post your meson-log.txt as it should have the debug information relevant to solving your issue.

[icamps]

@eli-schwartz sorry for my mistake.

Here is the meson-log.txt file attached.
meson-log.txt

[eli-schwartz]

Thanks.

Running compile:
Working directory:  /tmp/tmpfezuttav
Code:
 
        
        #ifndef _OPENMP
        # define _OPENMP "MESON_GET_DEFINE_UNDEFINED_SENTINEL"
        #endif
        "MESON_GET_DEFINE_DELIMITER_START"
_OPENMP
"MESON_GET_DEFINE_DELIMITER_END"
-----------
Command line: `nvc /tmp/tmpfezuttav/testfile.c -E -P -P -O0 -mp` -> 0

meson/meson.build:168:12: ERROR: Delimiters not found in preprocessor output.

So the question is, what is nvc actually returning for that code...

[icamps]

That file, testfile.c, is not part of the xTB program. I didn't find it and the temporary folders are deleted.