build, qt: Add RISC-V detection

Author: hebasto

depends/packages/qt.mk

@@ -13,7 +13,7 @@ $(package)_patches += support_new_android_ndks.patch fix_android_jni_static.patc
 $(package)_patches+= no_sdk_version_check.patch
 $(package)_patches+= fix_lib_paths.patch fix_android_pch.patch
 $(package)_patches+= qtbase-moc-ignore-gcc-macro.patch fix_limits_header.patch
-$(package)_patches += fix_qml_python.patch
+$(package)_patches += fix_qml_python.patch riscv_detection.patch
 
 $(package)_qtdeclarative_file_name = qtdeclarative-$($(package)_suffix)
 $(package)_qtdeclarative_sha256_hash = 1267e029abc8424424c419bc1681db069ec76e51270cc220994e0f442c9f78d3
@@ -267,6 +267,7 @@ define $(package)_preprocess_cmds
   patch -p1 -i $($(package)_patch_dir)/qtbase-moc-ignore-gcc-macro.patch && \
   patch -p1 -i $($(package)_patch_dir)/fix_limits_header.patch && \
   patch -p1 -i $($(package)_patch_dir)/fix_qml_python.patch && \
+  patch -p1 -i $($(package)_patch_dir)/riscv_detection.patch && \
   mkdir -p qtbase/mkspecs/macx-clang-linux &&\
   cp -f qtbase/mkspecs/macx-clang/qplatformdefs.h qtbase/mkspecs/macx-clang-linux/ &&\
   cp -f $($(package)_patch_dir)/mac-qmake.conf qtbase/mkspecs/macx-clang-linux/qmake.conf && \

depends/patches/qt/riscv_detection.patch

@@ -0,0 +1,41 @@
+Add RISC-V detection
+
+Upstream commit:
+ - Qt 5.14: 9a6a84731131b205f74b10f866ae212e0895bd4a
+
+--- old/qtbase/src/corelib/global/archdetect.cpp
++++ new/qtbase/src/corelib/global/archdetect.cpp
+@@ -67,6 +67,10 @@
+ #  define ARCH_PROCESSOR "power"
+ #elif defined(Q_PROCESSOR_POWER_64)
+ #  define ARCH_PROCESSOR "power64"
++#elif defined(Q_PROCESSOR_RISCV_32)
++#  define ARCH_PROCESSOR "riscv32"
++#elif defined(Q_PROCESSOR_RISCV_64)
++#  define ARCH_PROCESSOR "riscv64"
+ #elif defined(Q_PROCESSOR_S390_X)
+ #  define ARCH_PROCESSOR "s390x"
+ #elif defined(Q_PROCESSOR_S390)
+
+--- old/qtbase/src/corelib/global/qprocessordetection.h
++++ old/qtbase/src/corelib/global/qprocessordetection.h
+@@ -282,6 +282,19 @@
+ // Q_BYTE_ORDER not defined, use endianness auto-detection
+ 
++ /*
++    RISC-V family, known variants: 32- and 64-bit
++    RISC-V is little-endian.
++*/
++#elif defined(__riscv)
++#  define Q_PROCESSOR_RISCV
++#  if __riscv_xlen == 64
++#    define Q_PROCESSOR_RISCV_64
++#  else
++#    define Q_PROCESSOR_RISCV_32
++#  endif
++#  define Q_BYTE_ORDER Q_LITTLE_ENDIAN
++
+ /*
+     S390 family, known variant: S390X (64-bit)
+ 
+     S390 is big-endian.