[swig_installer] unknown option with cmake

[rea-yseop]

Package and Environment Details (include every applicable attribute)

• Package Name/Version: swig_installer/4.0.1
• Operating System+version: Linux Debian 10
• Compiler+version: gcc-8
• Conan version: conan 1.19.1
• Python version: Python 3.7.3

Conan profile (output of conan profile show default or conan profile show <profile> if custom profile is in use)

[settings]
os=Linux
os_build=Linux
arch=x86_64
arch_build=x86_64
compiler=gcc
compiler.version=8
compiler.libcxx=libstdc++
build_type=Release
[options]
[build_requires]
[env]

Steps to reproduce (Include if Applicable)

# Set up swig
find_package(swig_installer REQUIRED)

# Set policies to new to avoid warning.
# Should be removed in later version of cmake.
if (POLICY CMP0078)
cmake_policy(SET CMP0078 NEW)
endif()

if (POLICY CMP0086)
    cmake_policy(SET CMP0086 NEW)
endif()

# Enable methods from cmake swig.
include(UseSWIG)

# Include python
find_package(Python3 REQUIRED)
include_directories(${Python3_INCLUDE_DIRS})

swig_add_library(my_module
    TYPE MODULE
    LANGUAGE python
    SOURCES my_module.i)

Logs (Include/Attach if Applicable)

cmake -E env: unknown option '-python'

I am trying to use swig_installer with CMake.
Not sure if it is related to #1026.

[Croydon]

@madebr could you maybe have a look? 😄

[madebr]

@rea-yseop
UseSWIG only works with cmake's FindSWIG module.

So you still need find_package(SWIG REQUIRED).

[rea-yseop]

Sorry completely forgot to update this issue.
Thanks for the answer. I also had issue by using only find_package(SWIG REQUIRED) and had to be more specific by using find_package(SWIG 4 REQUIRED).

[madebr]

@rea-yseop
This recipe will soon be available on CCI (conan-io/conan-center-index#1717)

[rea-yseop]

This works for me. Thank you :)