#error "__WORDSIZE is not defined"

olilarkin · 25 September 2020 15:10

getting close to making iPlug2 build for Elk. It seems it is mixing up system and sourced headers and i get an error about WORDSIZE. Does anyone have any ideas why it pulls in stuff from /usr/include/c++/ and makes these errors?

did source /opt/elk/1.0/environment-setup-cortexa7t2hf-neon-vfpv4-elk-linux-gnueabi

oli@ubuntu:~/Dev/iPlug2/Examples/IPlugInstrument$ make vst3
cmake -S . -B build-linux -DCMAKE_BUILD_TYPE=Debug
Found path /home/oli/.vst and is_dir=1
– Configuring done
– Generating done
– Build files have been written to: /home/oli/Dev/iPlug2/Examples/IPlugInstrument/build-linux
cmake --build build-linux --config Debug --target IPlugInstrument-vst3
make[1]: Entering directory ‘/home/oli/Dev/iPlug2/Examples/IPlugInstrument/build-linux’
make[2]: Entering directory ‘/home/oli/Dev/iPlug2/Examples/IPlugInstrument/build-linux’
make[3]: Entering directory ‘/home/oli/Dev/iPlug2/Examples/IPlugInstrument/build-linux’
make[4]: Entering directory ‘/home/oli/Dev/iPlug2/Examples/IPlugInstrument/build-linux’
[ 3%] Generating IPlugInstrument.vst3/Contents/Resources/fonts/Roboto-Regular.ttf
Scanning dependencies of target IPlugInstrument-vst3
make[4]: Leaving directory ‘/home/oli/Dev/iPlug2/Examples/IPlugInstrument/build-linux’
make[4]: Entering directory ‘/home/oli/Dev/iPlug2/Examples/IPlugInstrument/build-linux’
[ 3%] Building CXX object CMakeFiles/IPlugInstrument-vst3.dir/IPlugInstrument.cpp.o
In file included from /opt/elk/1.0/sysroots/cortexa7t2hf-neon-vfpv4-elk-linux-gnueabi/usr/include/sys/cdefs.h:452,
from /opt/elk/1.0/sysroots/cortexa7t2hf-neon-vfpv4-elk-linux-gnueabi/usr/include/features.h:450,
from /usr/include/x86_64-linux-gnu/c++/9/bits/os_defines.h:39,
from /usr/include/x86_64-linux-gnu/c++/9/bits/c++config.h:524,
from /usr/include/c++/9/cstdio:41,
from /home/oli/Dev/iPlug2/IPlug/IPlug_include_in_plug_hdr.h:20,
from /home/oli/Dev/iPlug2/Examples/IPlugInstrument/IPlugInstrument.h:3,
from /home/oli/Dev/iPlug2/Examples/IPlugInstrument/IPlugInstrument.cpp:1:
/opt/elk/1.0/sysroots/cortexa7t2hf-neon-vfpv4-elk-linux-gnueabi/usr/include/bits/wordsize.h:23:2: error: #error “__WORDSIZE is not defined”

Stefano · 28 September 2020 07:16

Hi Oli!

Can you point us to the CMake file?

It’s probably something there that is not adapted for cross-compilation.

olilarkin · 28 September 2020 09:38

github.com

iPlug2/iPlug2/blob/linux/iplug2.cmake

#
# This file should be included in your main CMakeLists.txt file. #
#

# We need this so we can find call FindFaust.cmake
list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_LIST_DIR}/cmake)

# This is used in many places
set(IPLUG2_DIR ${CMAKE_CURRENT_LIST_DIR})

# CMP0091 is REQURED to be NEW for this to work.
cmake_policy(GET CMP0091 _tmp)
if (NOT "${_tmp}" STREQUAL "NEW")
  message(FATAL_ERROR "CMake policy CMP0091 must be set to NEW!\nCall cmake_policy(SET CMP0091 NEW) before your project() definition.")
endif()
# Make sure MSVC uses static linking for compatibility with Skia libraries and easier distribution.
set(CMAKE_MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")

# We generate folders for targets that support it (Visual Studio, Xcode, etc.)
set_property(GLOBAL PROPERTY USE_FOLDERS ON)

github.com

iPlug2/iPlug2/blob/linux/cmake/VST3.cmake

cmake_minimum_required(VERSION 3.11)

set(VST3_SDK_DIR "${IPLUG2_DIR}/Dependencies/IPlug/VST3_SDK" CACHE PATH "VST3 SDK directory.")
set(vst3_target_arch "")

if (WIN32)
  if (CMAKE_SYSTEM_PROCESSOR MATCHES "X86")
    set(vst3_names "VST3")
    set(vst3_paths "C:/Program Files (x86)/Common Files" "C:/Program Files/Common Files")
    set(vst3_target_arch "x86")
  elseif ((CMAKE_HOST_SYSTEM_PROCESSOR MATCHES "AMD64") OR (CMAKE_HOST_SYSTEM_PROCESSOR MATCHES "IA64"))
    set(vst3_names "VST3")
    set(vst3_paths "C:/Program Files/Common Files")
    set(vst3_target_arch "x86_64")
  endif()
  set(vst3_target_arch "${vst3_target_arch}-win")

elseif (CMAKE_SYSTEM_NAME MATCHES "Darwin")
  set(vst3_names "VST3")
  set(vst3_paths "$ENV{HOME}/Library/Audio/Plug-Ins")

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github.com

iPlug2/iPlug2/blob/linux/Examples/IPlugInstrument/CMakeLists.txt

cmake_minimum_required(VERSION 3.11 FATAL_ERROR)
cmake_policy(SET CMP0091 NEW)

#########
# This is a build file for iPlug2 on Linux.
# It may work on Windows and MacOS, but that isn't the initial goal.
#
# To setup the build (change CMAKE_BUILD_TYPE as desired):
#   cmake -S . -B build-linux -DCMAKE_BUILD_TYPE=Debug
# To build the VST2 version:
#   cmake --build build-linux --target IPlugInstrument-vst2
# To build the VST3 version:
#   cmake --build build-linux --target IPlugInstrument-vst3

project(IPlugInstrument VERSION 1.0.0 LANGUAGES C CXX)

set(IPLUG2_DIR ${CMAKE_SOURCE_DIR}/../..)
include(${IPLUG2_DIR}/iplug2.cmake)
find_package(iPlug2 REQUIRED)

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thanks @Stefano!

Stefano · 7 October 2020 11:23

Hi @olilarkin,
sorry for the slow response.

My guess is that the culprit here is the VST3’s CMake, in the past we had some fixes that we had to do there and that now are merged in the latest Steinberg’s SDKs but could be an issue here.

The link to the VST3 CMake is not valid anymore and I can’t find it on Github (it was pointing to a directory under /blob/linux), can you tell me which branch / commit should I try to test building and if there are other dependencies we need to set up?

olilarkin · 7 October 2020 11:51

sorry that file has moved to a subfolder

if you checkout commit 468f95a8104303a1e155a7d4ef1748327c9df821

that is before the commit (b539a5f6ab4c58879bb906e6c697af2024f0db8b) that moved the cmake files.

it should be possible to build with make vst3/install inside the IPlugInstrument folder

Stefano · 7 October 2020 12:09

Hi Oli,
I just checked out that commit but couldn’t find any CMake files under the IPlugInstrument folder.

The CMake files that I see from top-level repo are:

./Dependencies/IPlug/RTAudio/CMakeLists.txt
./Dependencies/IPlug/RTAudio/tests/CMakeLists.txt
./Dependencies/IPlug/RTMidi/CMakeLists.txt

I also looked at makefiles but they all seem to be related to web-related stuff or am I missing something?

olilarkin · 7 October 2020 21:57

OK here is a branch

check that out and navigate to iPlug2/Examples/IPlugInstrument

type make vst3

here is the CMakeLists file for IPlugInstrument

github.com

iPlug2/iPlug2/blob/linux-elk/Examples/IPlugInstrument/CMakeLists.txt

cmake_minimum_required(VERSION 3.11 FATAL_ERROR)

#########
# This is a build file for iPlug2 on Linux.
# It may work on Windows and MacOS, but that isn't the initial goal.
#
# To setup the build (change CMAKE_BUILD_TYPE as desired):
#   cmake -S . -B build-linux -DCMAKE_BUILD_TYPE=Debug
# To build the VST2 version:
#   cmake --build build-linux --target IPlugInstrument-vst2
# To build the VST3 version:
#   cmake --build build-linux --target IPlugInstrument-vst3

project(IPlugInstrument VERSION 1.0.0 LANGUAGES C CXX)

set(IPLUG2_DIR ${CMAKE_SOURCE_DIR}/../..)
include(${IPLUG2_DIR}/iplug2.cmake)
find_package(iPlug2 REQUIRED COMPONENTS APP VST2 VST3 AU)

set(dir "${CMAKE_SOURCE_DIR}")

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