string_view: No such file or directory

 

 std::string_view is not available in GCC until version 7.

 

root@ubuntu:~/c++# gcc --version
gcc (Ubuntu/Linaro 5.5.0-12ubuntu1) 5.5.0 20171010
Copyright (C) 2015 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

root@ubuntu:~/c++# 

 

 

configure: error: Building GCC requires GMP 4.2+, MPFR 2.4.0+ and MPC 0.8.0+.

 

root@cloud:~/gcc-7.5.0# ./contrib/download_prerequisites
2021-07-02 15:02:50 URL: ftp://gcc.gnu.org/pub/gcc/infrastructure/gmp-6.1.0.tar.bz2 [2383840] -> "./gmp-6.1.0.tar.bz2" [1]
2021-07-02 15:02:59 URL: ftp://gcc.gnu.org/pub/gcc/infrastructure/mpfr-3.1.4.tar.bz2 [1279284] -> "./mpfr-3.1.4.tar.bz2" [1]
2021-07-02 15:03:05 URL: ftp://gcc.gnu.org/pub/gcc/infrastructure/mpc-1.0.3.tar.gz [669925] -> "./mpc-1.0.3.tar.gz" [1]
2021-07-02 15:03:15 URL: ftp://gcc.gnu.org/pub/gcc/infrastructure/isl-0.16.1.tar.bz2 [1626446] -> "./isl-0.16.1.tar.bz2" [1]
gmp-6.1.0.tar.bz2: OK
mpfr-3.1.4.tar.bz2: OK
mpc-1.0.3.tar.gz: OK
isl-0.16.1.tar.bz2: OK
All prerequisites downloaded successfully.
root@cloud:~/gcc-7.5.0# 

 

 

root@cloud:~/gcc-7.5.0# mkdir  gcc-build-7.5
root@cloud:~/gcc-7.5.0# cd gcc-build-7.5/
root@cloud:~/gcc-7.5.0/gcc-build-7.5# ../configure --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++,go,lto --enable-plugin --enable-initfini-array --disable-libgcj --enable-gnu-indirect-function --with-tune=generic --disable-multilib 

 

 

root@cloud:~/gcc-7.5.0# ./contrib/download_prerequisites
2021-07-02 15:02:50 URL: ftp://gcc.gnu.org/pub/gcc/infrastructure/gmp-6.1.0.tar.bz2 [2383840] -> "./gmp-6.1.0.tar.bz2" [1]
2021-07-02 15:02:59 URL: ftp://gcc.gnu.org/pub/gcc/infrastructure/mpfr-3.1.4.tar.bz2 [1279284] -> "./mpfr-3.1.4.tar.bz2" [1]
2021-07-02 15:03:05 URL: ftp://gcc.gnu.org/pub/gcc/infrastructure/mpc-1.0.3.tar.gz [669925] -> "./mpc-1.0.3.tar.gz" [1]
2021-07-02 15:03:15 URL: ftp://gcc.gnu.org/pub/gcc/infrastructure/isl-0.16.1.tar.bz2 [1626446] -> "./isl-0.16.1.tar.bz2" [1]
gmp-6.1.0.tar.bz2: OK
mpfr-3.1.4.tar.bz2: OK
mpc-1.0.3.tar.gz: OK
isl-0.16.1.tar.bz2: OK
All prerequisites downloaded successfully.
root@cloud:~/gcc-7.5.0# cd -
/root/gcc-7.5.0/gcc-build-7.5
root@cloud:~/gcc-7.5.0/gcc-build-7.5# ../configure --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++,go,lto --enable-plugin --enable-initfini-array --disable-libgcj --enable-gnu-indirect-function --with-tune=generic --disable-multilib   
checking build system type... aarch64-unknown-linux-gnu
checking host system type... aarch64-unknown-linux-gnu
checking target system type... aarch64-unknown-linux-gnu
checking for a BSD-compatible install... /usr/bin/install -c
checking whether ln works... yes
checking whether ln -s works... yes
checking for a sed that does not truncate output... /bin/sed
checking for gawk... gawk
checking for libatomic support... yes
checking for libcilkrts support... no
checking for libitm support... yes
checking for libsanitizer support... yes
checking for libvtv support... yes
checking for libmpx support... no
checking for libhsail-rt support... no

 

 

checking if mkdir takes one argument... no
This target does not support --with-tune.
Valid --with options are: abi cpu arch
Makefile:4282: recipe for target 'configure-stage1-gcc' failed
make[2]: *** [configure-stage1-gcc] Error 1
make[2]: Leaving directory '/root/gcc-7.5.0/gcc-build-7.5'
Makefile:25895: recipe for target 'stage1-bubble' failed
make[1]: *** [stage1-bubble] Error 2
make[1]: Leaving directory '/root/gcc-7.5.0/gcc-build-7.5'
Makefile:939: recipe for target 'all' failed
make: *** [all] Error 2
root@cloud:~/gcc-7.5.0/gcc-build-7.5# 

 

 

configure的最后一个参数是关闭32位库，只编译64位库， 。如果想要同时编译32位和64位，可以使用-enable-multilib
../configure --enable-checking=release --enable-languages=c,c++ --disable-multilib