diff --git a/common/build-style/cmake.sh b/common/build-style/cmake.sh
index b152c977f3a..1b37fddba63 100644
--- a/common/build-style/cmake.sh
+++ b/common/build-style/cmake.sh
@@ -7,6 +7,14 @@ do_configure() {
 	cd ${cmake_builddir}
 
 	if [ "$CROSS_BUILD" ]; then
+		case "$XBPS_TARGET_MACHINE" in
+			x86_64*) _CMAKE_SYSTEM_PROCESSOR=x86_64 ;;
+			i686*) _CMAKE_SYSTEM_PROCESSOR=x86 ;;
+			aarch64*) _CMAKE_SYSTEM_PROCESSOR=aarch64 ;;
+			arm*) _CMAKE_SYSTEM_PROCESSOR=arm ;;
+			mips*) _CMAKE_SYSTEM_PROCESSOR=mips ;;
+			*) _CMAKE_SYSTEM_PROCESSOR=generic ;;
+		esac
 		cat > cross_${XBPS_CROSS_TRIPLET}.cmake <<_EOF
 SET(CMAKE_SYSTEM_NAME Linux)
 SET(CMAKE_SYSTEM_VERSION 1)
@@ -15,6 +23,8 @@ SET(CMAKE_C_COMPILER   ${CC})
 SET(CMAKE_CXX_COMPILER ${CXX})
 SET(CMAKE_CROSSCOMPILING TRUE)
 
+SET(CMAKE_SYSTEM_PROCESSOR ${_CMAKE_SYSTEM_PROCESSOR})
+
 SET(CMAKE_FIND_ROOT_PATH  ${XBPS_CROSS_BASE})
 
 SET(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)