Attempt to fix MOD devices

.travis/script_moddevices.sh

@@ -5,5 +5,7 @@ set -ex
 
 mkdir -p build/${INSTALL_DIR} && cd build
 
-buildenv mod-plugin-builder /usr/local/bin/cmake -DCMAKE_BUILD_TYPE=Release -DSFIZZ_JACK=OFF ..
+buildenv mod-plugin-builder /usr/local/bin/cmake \
+         -DSFIZZ_SYSTEM_PROCESSOR=armv7-a \
+         -DCMAKE_BUILD_TYPE=Release -DSFIZZ_JACK=OFF ..
 buildenv mod-plugin-builder make -j

cmake/SfizzConfig.cmake

@@ -18,10 +18,12 @@ endif()
 # The variable CMAKE_SYSTEM_PROCESSOR is incorrect on Visual studio...
 # see https://gitlab.kitware.com/cmake/cmake/issues/15170
 
-if(MSVC)
+if (NOT SFIZZ_SYSTEM_PROCESSOR)
+    if(MSVC)
         set(SFIZZ_SYSTEM_PROCESSOR "${MSVC_CXX_ARCHITECTURE_ID}")
-else()
+    else()
         set(SFIZZ_SYSTEM_PROCESSOR "${CMAKE_SYSTEM_PROCESSOR}")
+    endif()
 endif()
 
 # Add required flags for the builds

cmake/VSTConfig.cmake

@@ -11,13 +11,8 @@ else()
     "Install destination for VST bundle [default: ${CMAKE_INSTALL_PREFIX}/lib/vst3}]")
 endif()
 
-# The variable CMAKE_SYSTEM_PROCESSOR is incorrect on Visual studio...
+if (NOT VST3_SYSTEM_PROCESSOR)
-# see https://gitlab.kitware.com/cmake/cmake/issues/15170
+    set(VST3_SYSTEM_PROCESSOR "${SFIZZ_SYSTEM_PROCESSOR}")
-
-if(MSVC)
-    set(VST3_SYSTEM_PROCESSOR "${MSVC_CXX_ARCHITECTURE_ID}")
-else()
-    set(VST3_SYSTEM_PROCESSOR "${CMAKE_SYSTEM_PROCESSOR}")
 endif()
 
 message(STATUS "The system architecture is: ${VST3_SYSTEM_PROCESSOR}")