Hi guys,

I'm trying to cross-compile a project using CMake and gdc (or better: the gdmd port). My CMakeLists-file is the following:

cmake_minimum_required(VERSION 2.8.1)

set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake-d")
SET(CMAKE_SYSTEM_NAME Linux)

project(myapp D)
set(CMAKE_D_FLAGS "${CMAKE_D_FLAGS} ${GLOBAL_DMD_DEFS}")

set(SOURCES
    main.d
    generic.d
    )

include_directories(.)

add_executable(myapp ${SOURCES})

I'm working on Windows and I want compile the project for the target linux system. So, I downloaded the gdc (x86_64-linux-gnu), extracted it and set the PATH variable. Unfortunately, when I configure my project using CMake, I'm getting the following message:

CMake Error at C:/Users/User/Desktop/Project/cmake-d/CMakeDetermineDCompiler.cmake:32 (MESSAGE):
  Could not find compiler set in environment variable C:

  CMAKE_D_COMPILER-NOTFOUND.
Call Stack (most recent call first):
  CMakeLists.txt:6 (project)


CMake Error: CMAKE_D_COMPILER not set, after EnableLanguage

I think CMake cannot find the compiler because the executables of gdc are named like "x86_64-unknown-linux-gnu-gdc". So, I've added the following to my CMakeLists-file:

set(CMAKE_D_COMPILER x86_64-unknown-linux-gnu-gdmd)

But this also fails with the following error:

The D compiler identification is GNU
Check for working D compiler: C:/Users/User/Compiler/x86_64-unknown-linux-gnu/bin/x86_64-unknown-linux-gnu-gdmd.exe
Check for working D compiler: C:/Users/User/Compiler/x86_64-unknown-linux-gnu/bin/x86_64-unknown-linux-gnu-gdmd.exe -- broken
To force a specific D compiler set the DC environment variable
    ie - export DC="/usr/bin/dmd"
CMake Error at C:/Users/User/Desktop/cmake-d/CMakeTestDCompiler.cmake:45 (message):
  The D compiler
  "C:/Users/User/Compiler/x86_64-unknown-linux-gnu/bin/x86_64-unknown-linux-gnu-gdmd.exe"
  is not able to compile a simple test program.

  It fails with the following output:

   Change Dir: C:/Users/User/Desktop/Project.linux/CMakeFiles/CMakeTmp



  Run Build Command:"C:/Users/User/Compiler/ninja.exe"
  "cmTC_365e1"

  [1/2] Building D object CMakeFiles\cmTC_365e1.dir\testDCompiler


  FAILED: CMakeFiles/cmTC_365e1.dir/testDCompiler



  C:\Users\User\Entwicklung\Compiler\x86_64-unknown-linux-gnu\bin\x86_64-unknown-linux-gnu-gdmd.exe
  CMakeFiles\cmTC_365e1.dir\testDCompiler -c
  C:\Users\User\Desktop\Project.linux\CMakeFiles\3.7.2\CMakeTmp\testDCompiler.d



  x86_64-unknown-linux-gnu-gdc.exe: error:
  CMakeFiles\cmTC_365e1.dir\testDCompiler.d: No such file or directory




  x86_64-unknown-linux-gnu-gdc.exe: fatal error: no input files




  compilation terminated.




  Compile of ["CMakeFiles\\cmTC_365e1.dir\\testDCompiler.d"] failed



  ninja: build stopped: subcommand failed.






  CMake will not be able to correctly generate this project.
Call Stack (most recent call first):
  CMakeLists.txt:7 (project)


Configuring incomplete, errors occurred!
See also "C:/Users/User/Desktop/Project.linux/CMakeFiles/CMakeOutput.log".

Does anyone know what can cause the problem here? I've also set the DC environment variable but I'm still getting the errors :(

On Tuesday, 4 April 2017 at 18:42:45 UTC, timvol wrote:
> Hi guys,
>
> I'm trying to cross-compile a project using CMake and gdc (or better: the gdmd port). My CMakeLists-file is the following:
>

For cross-compiling, CMake uses a so called "toolchain" file [1] where you define the system paths similar to the target system.

I confess that never cross-compiled any code with cmake-d, but in principle it should work.

Dragos

[1] https://cmake.org/cmake/help/v3.7/manual/cmake-toolchains.7.html#cross-compiling-for-linux

On Tuesday, 4 April 2017 at 19:59:19 UTC, Dragos Carp wrote:
> On Tuesday, 4 April 2017 at 18:42:45 UTC, timvol wrote:
>> Hi guys,
>>
>> I'm trying to cross-compile a project using CMake and gdc (or better: the gdmd port). My CMakeLists-file is the following:
>>
>
> For cross-compiling, CMake uses a so called "toolchain" file [1] where you define the system paths similar to the target system.
>
> I confess that never cross-compiled any code with cmake-d, but in principle it should work.
>
> Dragos
>
> [1] https://cmake.org/cmake/help/v3.7/manual/cmake-toolchains.7.html#cross-compiling-for-linux

Alright. Thank you Dragos. I thought it's possible without using a toolchain file but I'll give it a try :)

On Tuesday, 4 April 2017 at 19:59:19 UTC, Dragos Carp wrote:
> On Tuesday, 4 April 2017 at 18:42:45 UTC, timvol wrote:
>> Hi guys,
>>
>> I'm trying to cross-compile a project using CMake and gdc (or better: the gdmd port). My CMakeLists-file is the following:
>>
>
> For cross-compiling, CMake uses a so called "toolchain" file [1] where you define the system paths similar to the target system.
>
> I confess that never cross-compiled any code with cmake-d, but in principle it should work.
>
> Dragos
>
> [1] https://cmake.org/cmake/help/v3.7/manual/cmake-toolchains.7.html#cross-compiling-for-linux

I tried using a toolchain file but unfortunately, I'm still getting the same error. Using the dmd compiler works fine but not the GDC compiler for cross compiling :(.
Any other idea(s) what can cause the error?