Merge bitcoin#13665: [build] Add risc-v support to gitian

c4aecd1 Add risc-v 64-bit to gitian (Chun Kuan Lee)
96dda8b [depends] Add riscv qt depends support for cross compiling bitcoin-qt (Chun Kuan Lee)

Pull request description:

  Based on ~bitcoin#13660~ bitcoin#13710 ,  add gitian tarball for RISC-V

Tree-SHA512: 8db73545a2ea7fe03fa156598479335ea3c79aa3fb9c5cc44b8563094b1deb7c94d29c1dab47fac129dbfa2e3e774301b526474beeeb59c9b0087d3ea087dbd6

contrib/gitian-descriptors/gitian-linux.yml

@@ -8,15 +8,19 @@ architectures:
 packages:
 - "curl"
 - "g++-aarch64-linux-gnu"
-- "g++-7-aarch64-linux-gnu"
-- "gcc-7-aarch64-linux-gnu"
+- "g++-8-aarch64-linux-gnu"
+- "gcc-8-aarch64-linux-gnu"
 - "binutils-aarch64-linux-gnu"
 - "g++-arm-linux-gnueabihf"
-- "g++-7-arm-linux-gnueabihf"
-- "gcc-7-arm-linux-gnueabihf"
+- "g++-8-arm-linux-gnueabihf"
+- "gcc-8-arm-linux-gnueabihf"
 - "binutils-arm-linux-gnueabihf"
-- "g++-7-multilib"
-- "gcc-7-multilib"
+- "g++-riscv64-linux-gnu"
+- "g++-8-riscv64-linux-gnu"
+- "gcc-8-riscv64-linux-gnu"
+- "binutils-riscv64-linux-gnu"
+- "g++-8-multilib"
+- "gcc-8-multilib"
 - "binutils-gold"
 - "git"
 - "pkg-config"
@@ -37,9 +41,9 @@ script: |
   set -e -o pipefail
 
   WRAP_DIR=$HOME/wrapped
-  HOSTS="i686-pc-linux-gnu x86_64-linux-gnu arm-linux-gnueabihf aarch64-linux-gnu"
+  HOSTS="i686-pc-linux-gnu x86_64-linux-gnu arm-linux-gnueabihf aarch64-linux-gnu riscv64-linux-gnu"
   CONFIGFLAGS="--enable-glibc-back-compat --enable-reduce-exports --disable-bench --disable-gui-tests --enable-crash-hooks"
-  FAKETIME_HOST_PROGS=""
+  FAKETIME_HOST_PROGS="gcc g++"
   FAKETIME_PROGS="date ar ranlib nm"
   HOST_CFLAGS="-O2 -g"
   HOST_CXXFLAGS="-O2 -g"
@@ -94,14 +98,15 @@ script: |
   function create_per-host_faketime_wrappers {
   for i in $HOSTS; do
     for prog in ${FAKETIME_HOST_PROGS}; do
-        echo '#!/usr/bin/env bash' > ${WRAP_DIR}/${i}-${prog}
-        echo "# GCCVERSION=${GCCVERSION}" >> ${WRAP_DIR}/${i}-${prog}
-        echo "REAL=\`which -a ${i}-${prog} | grep -v ${WRAP_DIR}/${i}-${prog} | head -1\`" >> ${WRAP_DIR}/${i}-${prog}
-        echo 'export LD_PRELOAD=/usr/lib/x86_64-linux-gnu/faketime/libfaketime.so.1' >> ${WRAP_DIR}/${i}-${prog}
-        echo "export FAKETIME=\"$1\"" >> ${WRAP_DIR}/${i}-${prog}
-        echo "\$REAL \$@" >> $WRAP_DIR/${i}-${prog}
-        chmod +x ${WRAP_DIR}/${i}-${prog}
-        touch -d "${REFERENCE_DATETIME}" ${WRAP_DIR}/${i}-${prog}
+        if which ${i}-${prog}-8
+        then
+            echo '#!/usr/bin/env bash' > ${WRAP_DIR}/${i}-${prog}
+            echo "REAL=\`which -a ${i}-${prog}-8 | grep -v ${WRAP_DIR}/${i}-${prog} | head -1\`" >> ${WRAP_DIR}/${i}-${prog}
+            echo 'export LD_PRELOAD=/usr/lib/x86_64-linux-gnu/faketime/libfaketime.so.1' >> ${WRAP_DIR}/${i}-${prog}
+            echo "export FAKETIME=\"$1\"" >> ${WRAP_DIR}/${i}-${prog}
+            echo "\$REAL \$@" >> $WRAP_DIR/${i}-${prog}
+            chmod +x ${WRAP_DIR}/${i}-${prog}
+        fi
     done
   done
   }

depends/packages/libXau.mk

@@ -12,6 +12,10 @@ define $(package)_set_vars
   $(package)_config_opts_linux=--with-pic
 endef
 
+define $(package)_preprocess_cmds
+  cp -f $(BASEDIR)/config.guess $(BASEDIR)/config.sub .
+endef
+
 define $(package)_config_cmds
   $($(package)_autoconf)
 endef

depends/packages/libxcb.mk

@@ -22,6 +22,7 @@ $(package)_config_opts += --disable-xv --disable-xvmc
 endef
 
 define $(package)_preprocess_cmds
+  cp -f $(BASEDIR)/config.guess $(BASEDIR)/config.sub build-aux &&\
   sed "s/pthread-stubs//" -i configure
 endef
 

depends/packages/protobuf.mk

@@ -11,6 +11,11 @@ define $(package)_set_vars
   $(package)_config_opts_linux=--with-pic
 endef
 
+define $(package)_preprocess_cmds
+   cp -f $(BASEDIR)/config.guess $(BASEDIR)/config.sub . &&\
+   cp -f $(BASEDIR)/config.guess $(BASEDIR)/config.sub gtest/build-aux
+endef
+
 define $(package)_config_cmds
   $($(package)_autoconf)
 endef

depends/packages/qrencode.mk

@@ -10,6 +10,10 @@ $(package)_config_opts += --disable-gprof --disable-gcov --disable-mudflap
 $(package)_config_opts_linux=--with-pic
 endef
 
+define $(package)_preprocess_cmds
+  cp -f $(BASEDIR)/config.guess $(BASEDIR)/config.sub use
+endef
+
 define $(package)_config_cmds
   $($(package)_autoconf)
 endef

depends/packages/qt.mk

@@ -7,7 +7,7 @@ $(package)_sha256_hash=36dd9574f006eaa1e5af780e4b33d11fe39d09fd7c12f3b9d83294174
 $(package)_dependencies=openssl zlib
 $(package)_linux_dependencies=freetype fontconfig libxcb
 $(package)_qt_libs=corelib network widgets gui plugins testlib
-$(package)_patches=fix_qt_pkgconfig.patch mac-qmake.conf fix_configure_mac.patch fix_no_printer.patch
+$(package)_patches=fix_qt_pkgconfig.patch mac-qmake.conf fix_configure_mac.patch fix_no_printer.patch  fix_riscv64_arch.patch
 $(package)_patches+= fix_rcc_determinism.patch xkb-default.patch no-xlib.patch
 $(package)_patches+= dont_hardcode_pwd.patch
 $(package)_patches+= freetype_back_compat.patch drop_lrelease_dependency.patch
@@ -114,6 +114,7 @@ $(package)_config_opts_arm_linux += -platform linux-g++ -xplatform bitcoin-linux
 $(package)_config_opts_i686_linux  = -xplatform linux-g++-32
 $(package)_config_opts_x86_64_linux = -xplatform linux-g++-64
 $(package)_config_opts_aarch64_linux = -xplatform linux-aarch64-gnu-g++
+$(package)_config_opts_riscv64_linux = -platform linux-g++ -xplatform bitcoin-linux-g++
 $(package)_config_opts_mingw32  = -no-opengl -xplatform win32-g++ -device-option CROSS_COMPILE="$(host)-"
 $(package)_build_env  = QT_RCC_TEST=1
 $(package)_build_env += QT_RCC_SOURCE_DATE_OVERRIDE=1
@@ -161,6 +162,7 @@ define $(package)_preprocess_cmds
   echo "!host_build: QMAKE_CXXFLAGS   += $($(package)_cxxflags) $($(package)_cppflags)" >> qtbase/mkspecs/common/gcc-base.conf && \
   echo "!host_build: QMAKE_LFLAGS     += $($(package)_ldflags)" >> qtbase/mkspecs/common/gcc-base.conf && \
   patch -p1 -i $($(package)_patch_dir)/no-xlib.patch &&\
+  patch -p1 -i $($(package)_patch_dir)/fix_riscv64_arch.patch &&\
   echo "QMAKE_LINK_OBJECT_MAX = 10" >> qtbase/mkspecs/win32-g++/qmake.conf &&\
   echo "QMAKE_LINK_OBJECT_SCRIPT = object_script" >> qtbase/mkspecs/win32-g++/qmake.conf &&\
   sed -i.old "s|QMAKE_CFLAGS            = |!host_build: QMAKE_CFLAGS            = $($(package)_cflags) $($(package)_cppflags) |" qtbase/mkspecs/win32-g++/qmake.conf && \

depends/packages/xproto.mk

@@ -8,6 +8,10 @@ define $(package)_set_vars
 $(package)_config_opts=--without-fop --without-xmlto --without-xsltproc --disable-specs
 endef
 
+define $(package)_preprocess_cmds
+  cp -f $(BASEDIR)/config.guess $(BASEDIR)/config.sub .
+endef
+
 define $(package)_config_cmds
   $($(package)_autoconf)
 endef

depends/patches/qt/fix_riscv64_arch.patch

@@ -0,0 +1,14 @@
+diff --git a/qtbase/src/3rdparty/double-conversion/include/double-conversion/utils.h b/qtbase/src/3rdparty/double-conversion/include/double-conversion/utils.h
+index 20bfd36..93729fa 100644
+--- a/qtbase/src/3rdparty/double-conversion/include/double-conversion/utils.h
++++ b/qtbase/src/3rdparty/double-conversion/include/double-conversion/utils.h
+@@ -65,7 +65,8 @@
+     defined(__sparc__) || defined(__sparc) || defined(__s390__) || \
+     defined(__SH4__) || defined(__alpha__) || \
+     defined(_MIPS_ARCH_MIPS32R2) || \
+-    defined(__AARCH64EL__)
++    defined(__AARCH64EL__) || defined(__aarch64__) || \
++    defined(__riscv)
+ #define DOUBLE_CONVERSION_CORRECT_DOUBLE_OPERATIONS 1
+ #elif defined(_M_IX86) || defined(__i386__) || defined(__i386)
+ #if defined(_WIN32)

src/compat/glibc_compat.cpp

@@ -67,6 +67,8 @@ __asm(".symver log2f_old,log2f@GLIBC_2.2.5");
 __asm(".symver log2f_old,log2f@GLIBC_2.4");
 #elif defined(__aarch64__)
 __asm(".symver log2f_old,log2f@GLIBC_2.17");
+#elif defined(__riscv)
+__asm(".symver log2f_old,log2f@GLIBC_2.27");
 #endif
 extern "C" float __wrap_log2f(float x)
 {