https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109562
Bug ID: 109562
Summary: Failed to build native GCC 12.2.0 on RISC-V64 linux
machine
Product: gcc
Version: 11.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: winterjasmine1 at hotmail dot com
Target Milestone: ---
Created attachment 54885
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=54885&action=edit
error log when building GCC 12.2.0 natively on RISC-V linux machine
Failed to build native GCC 12.2.0 on RISC-V64 linux machine.
Steps:
```
$sudo apt-get install autoconf automake autotools-dev curl python3 libmpc-dev
libmpfr-dev libgmp-dev gawk build-essential bison flex texinfo gperf libtool
patchutils bc zlib1g-dev libexpat-dev
$ cd gcc-12.2.0
$ contrib/download_prerequisites
$ mkdir build && cd build
$ ../configure --enable-languages=c,c++,fortran --prefix=$HOME/opt/gcc-12.2.0
--disable-multilib
$ make -j4
```
error info:
```
/usr/include/stdio.h:592:14: error: old-style parameter declarations in
prototyped function definition
592 | extern char *fgets (char *__restrict __s, int __n, FILE *__restrict
__stream)
| ^~~~~
../../../libgcc/libgcc2.c:2457: error: expected ‘{’ at end of input
../../../libgcc/libgcc2.c:2457: warning: control reaches end of non-void
function [-Wreturn-type]
make[3]: *** [Makefile:501: _ashrdi3.o] Error 1
```
The full error log is attached.
