Set arch based on target compiler if cross compiling.

diff --git a/cmake/archdetect.cmake b/cmake/archdetect.cmake
index 9f8d1c1074a075dd53080520c777dc53ed51af26..9a8b9881e2d9907b787dad53ad36787d1b458fcd 100644 (file)
--- a/cmake/archdetect.cmake
+++ b/cmake/archdetect.cmake
@@ -16,6 +16,8 @@ elseif(MSVC)
     elseif ("${MSVC_C_ARCHITECTURE_ID}" STREQUAL "ARM64")
         set(ARCH "aarch64")
     endif()
+elseif(CMAKE_CROSSCOMPILING)
+    set(ARCH ${CMAKE_C_COMPILER_TARGET})
 else()
     # Let preprocessor parse archdetect.c and raise an error containing the arch identifier
     enable_language(C)
@@ -51,7 +53,7 @@ if("${ARCH}" MATCHES "(x86_64|AMD64|i[3-6]86)")
 elseif("${ARCH}" MATCHES "(arm(v[0-9])?|aarch64)")
     set(BASEARCH "arm")
     set(BASEARCH_ARM_FOUND TRUE)
-elseif("${ARCH}" MATCHES "ppc(64)?")
+elseif("${ARCH}" MATCHES "ppc(64)?|powerpc(64)?")
     set(BASEARCH "ppc")
     set(BASEARCH_PPC_FOUND TRUE)
 elseif("${ARCH}" MATCHES "alpha")