diff --git a/gcc.spec b/gcc.spec
index 5422ee7d2e43c4211583d18e67ef88e5eaef77af..99619ee7baafe1cce4a400c3b079aa587f00f25a 100644
--- a/gcc.spec
+++ b/gcc.spec
@@ -1,4 +1,4 @@
-%global DATE 20210819
+%global DATE 20210827
 
 %global gcc_version 10.3.1
 %global gcc_major 10.3.1
@@ -55,11 +55,15 @@
 %else
 %global attr_ifunc 0
 %endif
+%ifarch riscv64
+%global _lib lib
+%global _smp_mflags -j8
+%endif
 
 Summary: Various compilers (C, C++, Objective-C, ...)
 Name: gcc
 Version: %{gcc_version}
-Release: %{DATE}.3
+Release: %{DATE}.4
 License: GPLv3+ and GPLv3+ with exceptions and GPLv2+ with exceptions and LGPLv2+ and BSD
 URL: https://gcc.gnu.org
 
@@ -678,13 +682,14 @@ CC="$CC" CFLAGS="$OPT_FLAGS" \
 	   --with-multilib-list=lp64
 %endif
 %ifarch riscv64
-	   --with-arch=rv64gc --with-abi=lp64d --with-multilib-list=lp64d
+	   --with-arch=rv64g --with-abi=lp64d \
+	   --disable-libquadmath --disable-multilib
 %endif
 
 %ifarch sparc sparcv9 sparc64
-make -j32 BOOT_CFLAGS="$OPT_FLAGS" bootstrap
+make %{?_smp_mflags} BOOT_CFLAGS="$OPT_FLAGS" bootstrap
 %else
-make -j32 BOOT_CFLAGS="$OPT_FLAGS" BOOT_LDFLAGS="-pie -Wl,-z,relro,-z,now"
+make %{?_smp_mflags} BOOT_CFLAGS="$OPT_FLAGS" BOOT_LDFLAGS="-pie -Wl,-z,relro,-z,now"
 %endif
 
 # Make generated man pages even if Pod::Man is not new enough
@@ -692,14 +697,14 @@ perl -pi -e 's/head3/head2/' ../contrib/texi2pod.pl
 for i in ../gcc/doc/*.texi; do
   cp -a $i $i.orig; sed 's/ftable/table/' $i.orig > $i
 done
-make -j -C gcc generated-manpages
+make %{?_smp_mflags} -C gcc generated-manpages
 for i in ../gcc/doc/*.texi; do mv -f $i.orig $i; done
 
 # Make generated doxygen pages.
 %if %{build_libstdcxx_docs}
 cd %{gcc_target_platform}/libstdc++-v3
-make -j doc-html-doxygen
-make -j doc-man-doxygen
+make %{?_smp_mflags} doc-html-doxygen
+make %{?_smp_mflags} doc-man-doxygen
 cd ../..
 %endif
 
@@ -777,7 +782,7 @@ cd obj-%{gcc_target_platform}
 TARGET_PLATFORM=%{gcc_target_platform}
 
 # There are some MP bugs in libstdc++ Makefiles
-make -j -C %{gcc_target_platform}/libstdc++-v3
+make %{?_smp_mflags} -C %{gcc_target_platform}/libstdc++-v3
 
 make prefix=%{buildroot}%{_prefix} mandir=%{buildroot}%{_mandir} \
   infodir=%{buildroot}%{_infodir} install
@@ -1510,7 +1515,7 @@ cd obj-%{gcc_target_platform}
 
 %if %{build_check}
 # run the tests.
-LC_ALL=C make -j32 -k check ALT_CC_UNDER_TEST=gcc ALT_CXX_UNDER_TEST=g++ \
+LC_ALL=C make %{?_smp_mflags} -k check ALT_CC_UNDER_TEST=gcc ALT_CXX_UNDER_TEST=g++ \
      RUNTESTFLAGS="--target_board=unix/'{,-fstack-protector-strong}'" || :
 echo ====================TESTING=========================
 ( LC_ALL=C ../contrib/test_summary || : ) 2>&1 | sed -n '/^cat.*EOF/,/^EOF/{/^cat.*EOF/d;/^EOF/d;/^LAST_UPDATED:/d;p;}'
@@ -2564,6 +2569,12 @@ end
 %doc rpm.doc/changelogs/libcc1/ChangeLog*
 
 %changelog
+* Fri Aug 27 2021 eastb233 <xiezhiheng@huawei.com> - 10.3.1-20210827.4
+- Type:RISC-V
+- ID:NA
+- SUG:NA
+- DESC:Adapts to the RISC-V backend construction
+
 * Thu Aug 19 2021 eastb233 <xiezhiheng@huawei.com> - 10.3.1-20210819.3
 - Type:Sync
 - ID:NA