cIncludeDir doesn't seem to be working about nimterop HOT 7 CLOSED

Also adding --passC:-I/cad/adi/apps/cadence/xlm/linux/current/tools/include directly to the nim c .. command doesn't make any difference. But the needed .h files are definitely in that directory, albeit as symlinks.

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Try setting the search path to the include path using cAddSearchDir, then use cImport(cSearchPath("svdpi.h")) to import

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cIncludeDir() only forwards to gcc, it isn't used by nimterop itself.

See #7 for some details.

Please confirm that @zestyr's solution works.

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@zestyr thank you!

This worked:

import nimterop/cimport
import os

# cDebug()

# Below manual definition of s_vpi_vecval is a workaround for
# https://github.com/genotrance/nimterop/issues/47.
type
  s_vpi_vecval* {.importc: "s_vpi_vecval".} = object
    aval: uint32
    bval: uint32

const
  xlmIncludePath = getEnv("XCELIUM_ROOT") / ".." / "include"
static:
  doAssert fileExists(xlmIncludePath / "svdpi.h")
  doAssert fileExists(xlmIncludePath / "svdpi_compatibility.h")

# Below works  
cAddSearchDir(xlmIncludePath)
cImport(cSearchPath("svdpi.h"))

# https://github.com/genotrance/nimterop/issues/48
# Below doesn't work
# cIncludeDir(xlmIncludePath)
# cImport("svdpi.h")

Any idea why cIncludeDir wouldn't work? i.e. why wouldn't gcc find the svdpi.h at that path even though those doAsserts pass?

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I think that the issue is probably that the assert in the findPath in cimport causes the fail because the gcc command runs:

proc findPath(path: string, fail = true): string =
  # Relative to project path
  result = joinPathIfRel(getProjectPath(), path).replace("\\", "/")
  echo "debug = " & result                     # I added this debug
  if not fileExists(result) and not dirExists(result):
    doAssert (not fail), "File or directory not found: " & path
    result = ""

Above debug statement prints:

debug = /home/kmodi/sandbox/systemverilog/dpi_c/nim_svdpi_import_export/svdpi.h

The svdpi.h of course is not in the current directory .. it's in the directory I set using cIncludePath.

From cDebug(), I get:

{.passC: "-I"/cad/adi/apps/cadence/xlm/linux/18.03-s06/tools/include"".}

.. and svdpi.h does exist in that path.

So looks like the assertion is kicking too soon? .. not sure ..

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Again - cIncludeDir() is only used to send -Ixyz directives to gcc. It is not used by nimterop to find files. Even gcc only uses -I to search for files included in the file being processed but expects a full path to the file.

You need to use cAddSearchDir() and cSearchPath() lik you have to do this. This was explicitly requested by @timotheecour where originally cIncludeDir() was shared.

We can think about it again but it was separated out so that you don't confuse nimterop paths with gcc.

from nimterop.

You need to use cAddSearchDir() and cSearchPath() lik you have to do this. This was explicitly requested by @timotheecour where originally cIncludeDir() was shared.

Thanks! Closing this issue then.

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