linux降低gcc版本, 高版本gcc(gcc10.3.1)下编译低版本gcc(gcc4.8.5), 设置gcc版本共存

wget ftp://ftp.gnu.org/gnu/gcc/gcc-4.8.5/gcc-4.8.5.tar.gz
tar xzf gcc-4.8.5.tar.gz

yum install libstdc++-static

cd gcc-4.8.5
./contrib/download_prerequisites

mkdir build
cd build
# 生成makefile, 这些参数可以用已有的gcc参数 gcc -v 可用看到, 也可以自己修改需要的参数
# prefix指定安装路径
../configure --prefix=/opt/gcc4.8.5 --enable-bootstrap --enable-shared --enable-threads=posix --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object --enable-linker-build-id --with-linker-hash-style=gnu --enable-languages=c,c++ --enable-plugin --enable-initfini-array --disable-libgcj --enable-gnu-indirect-function --with-tune=generic --disable-multilib --with-arch_32=x86-64 --build=x86_64-linux-gnu

# 16线程编译, 编译过程耗时较长
make -j16

# 安装
make install

In file included from ../../gcc/cp/except.c:1008:
cfns.gperf:101:1: error: ‘const char* libc_name_p(const char*, unsigned int)’ redeclared inline with ‘gnu_inline’ attribute
cfns.gperf:26:14: note: ‘const char* libc_name_p(const char*, unsigned int)’ previously declared here
cfns.gperf:26:14: warning: inline function ‘const char* libc_name_p(const char*, unsigned int)’ used but never defined
make[3]: *** [Makefile:1059: cp/except.o] Error 1
make[3]: Leaving directory '/root/gcc-4.8.5-fixed/build/gcc'
make[2]: *** [Makefile:4163: all-stage1-gcc] Error 2
make[2]: Leaving directory '/root/gcc-4.8.5-fixed/build'
make[1]: *** [Makefile:20822: stage1-bubble] Error 2
make[1]: Leaving directory '/root/gcc-4.8.5-fixed/build'
make: *** [Makefile:892: all] Error 2

In file included from ../../../libgcc/unwind-dw2.c:405:0:
./md-unwind-support.h: In function ‘x86_64_fallback_frame_state’:
./md-unwind-support.h:65:47: error: dereferencing pointer to incomplete type
       sc = (struct sigcontext *) (void *) &uc_->uc_mcontext;
                                               ^
make[3]: *** [../../../libgcc/shared-object.mk:14: unwind-dw2.o] Error 1
make[3]: Leaving directory '/root/gcc-4.8.5-fixed/build/x86_64-linux-gnu/libgcc'
make[2]: *** [Makefile:16943: all-stage1-target-libgcc] Error 2
make[2]: Leaving directory '/root/gcc-4.8.5-fixed/build'
make[1]: *** [Makefile:20822: stage1-bubble] Error 2
make[1]: Leaving directory '/root/gcc-4.8.5-fixed/build'
make: *** [Makefile:892: all] Error 2

../../../../libsanitizer/asan/asan_linux.cc: In function ‘bool __asan::AsanInterceptsSignal(int)’:
../../../../libsanitizer/asan/asan_linux.cc:95:20: error: ‘SIGSEGV’ was not declared in this scope
   return signum == SIGSEGV && flags()->handle_segv;
                    ^
../../../../libsanitizer/asan/asan_linux.cc:96:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^
make[4]: *** [Makefile:441: asan_linux.lo] Error 1
make[4]: Leaving directory '/root/gcc-4.8.5-fixed/build/x86_64-linux-gnu/libsanitizer/asan'
make[3]: *** [Makefile:326: all-recursive] Error 1
make[3]: Leaving directory '/root/gcc-4.8.5-fixed/build/x86_64-linux-gnu/libsanitizer'
make[2]: *** [Makefile:15546: all-stage1-target-libsanitizer] Error 2
make[2]: Leaving directory '/root/gcc-4.8.5-fixed/build'
make[1]: *** [Makefile:20822: stage1-bubble] Error 2
make[1]: Leaving directory '/root/gcc-4.8.5-fixed/build'
make: *** [Makefile:892: all] Error 2

../../../../libsanitizer/tsan/tsan_platform_linux.cc: In function ‘int __tsan::ExtractResolvFDs(void*, int*, int)’:
../../../../libsanitizer/tsan/tsan_platform_linux.cc:295:16: error: ‘statp’ was not declared in this scope
   __res_state *statp = (__res_state*)state;
                ^
../../../../libsanitizer/tsan/tsan_platform_linux.cc:295:37: error: expected primary-expression before ‘)’ token
   __res_state *statp = (__res_state*)state;
                                     ^
../../../../libsanitizer/tsan/tsan_platform_linux.cc:295:38: error: expected ‘;’ before ‘state’
   __res_state *statp = (__res_state*)state;
                                      ^
make[4]: *** [Makefile:475: tsan_platform_linux.lo] Error 1
make[4]: Leaving directory '/root/gcc-4.8.5-fixed/build/x86_64-linux-gnu/libsanitizer/tsan'
make[3]: *** [Makefile:326: all-recursive] Error 1
make[3]: Leaving directory '/root/gcc-4.8.5-fixed/build/x86_64-linux-gnu/libsanitizer'
make[2]: *** [Makefile:15546: all-stage1-target-libsanitizer] Error 2
make[2]: Leaving directory '/root/gcc-4.8.5-fixed/build'
make[1]: *** [Makefile:20822: stage1-bubble] Error 2
make[1]: Leaving directory '/root/gcc-4.8.5-fixed/build'
make: *** [Makefile:892: all] Error 2

- MPFR=mpfr-2.4.2
- GMP=gmp-4.3.2
- MPC=mpc-0.8.1
+ MPFR=mpfr-4.1.0
+ GMP=gmp-6.2.1
+ MPC=mpc-1.2.1

# gcc
GCCDIR=/opt/gcc4.8.5
# path
PATH=$GCCDIR/bin:$PATH
export PATH

LIBRARY_PATH=$GCCDIR/lib64:$LIBRARY_PATH
export LIBRARY_PATH

LD_LIBRARY_PATH=$GCCDIR/lib64:$LD_LIBRARY_PA
export LD_LIBRARY_PATH