[Build] Optimize building time

- gcc.spec: Disable bootstrap to reduce building time

gcc.spec

@@ -1,4 +1,4 @@
-%global DATE 20210428
+%global DATE 20210528
 
 %global gcc_version 9.3.1
 %global gcc_major 9.3.1
@@ -59,7 +59,7 @@
 Summary: Various compilers (C, C++, Objective-C, ...)
 Name: gcc
 Version: %{gcc_version}
-Release: %{DATE}.19
+Release: %{DATE}.20
 License: GPLv3+ and GPLv3+ with exceptions and GPLv2+ with exceptions and LGPLv2+ and BSD
 URL: https://gcc.gnu.org
 
@@ -868,7 +868,7 @@ CC="$CC" CFLAGS="$OPT_FLAGS" \
 	   --enable-initfini-array --disable-libgcj --without-isl --without-cloog \
 	   --enable-gnu-indirect-function --build=%{gcc_target_platform} \
 	   --with-stage1-ldflags="$OPT_LDFLAGS" \
-	   --with-boot-ldflags="$OPT_LDFLAGS" \
+	   --with-boot-ldflags="$OPT_LDFLAGS" --disable-bootstrap \
 %ifarch x86_64
 	   --with-tune=generic \
 	   --with-arch_32=x86-64 \
@@ -2732,6 +2732,9 @@ end
 %doc rpm.doc/changelogs/libcc1/ChangeLog*
 
 %changelog
+* Fri May 28 2021 eastb233 <xiezhiheng@huawei.com> - 9.3.1-20210528.20
+- gcc.spec: Disable bootstrap to reduce building time
+
 * Wed Apr 28 2021 eastb233 <xiezhiheng@huawei.com> - 9.3.1-20210428.19
 - add-fp-model-options.patch: New file
 - enable-simd-math.patch: Enable simd math library in C and Fortran