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[AArch64] nosys.specs and printf
- From: Alexander Fedotov <alfedotov at gmail dot com>
- To: newlib at sourceware dot org
- Date: Fri, 15 Sep 2017 13:43:23 +0300
- Subject: [AArch64] nosys.specs and printf
- Authentication-results: sourceware.org; auth=none
Hello all
I'm trying to compile following simple program for aarch64 with nosys specs
#include <stdio.h>
int main(void) {
printf("hello");
return 0;
}
But I've got:
d:\gcc-6.3-arm64-eabi\bin>aarch64-none-elf-gcc --specs=nosys.specs test.c
d:/gcc-6.3-arm64-eabi/bin/../lib/gcc/aarch64-none-elf/6.3.1/../../../../aarch64-none-elf/lib\libc.a(lib_a-sbrkr.o):
In function `_sbrk_r':
sbrkr.c:(.text._sbrk_r+0x1c): undefined reference to `_sbrk'
d:/gcc-6.3-arm64-eabi/bin/../lib/gcc/aarch64-none-elf/6.3.1/../../../../aarch64-none-elf/lib\libc.a(lib_a-writer.o):
In function `_write_r':
writer.c:(.text._write_r+0x24): undefined reference to `_write'
d:/gcc-6.3-arm64-eabi/bin/../lib/gcc/aarch64-none-elf/6.3.1/../../../../aarch64-none-elf/lib\libc.a(lib_a-closer.o):
In function `_close_r':
closer.c:(.text._close_r+0x1c): undefined reference to `_close'
d:/gcc-6.3-arm64-eabi/bin/../lib/gcc/aarch64-none-elf/6.3.1/../../../../aarch64-none-elf/lib\libc.a(lib_a-fstatr.o):
In function `_fstat_r':
fstatr.c:(.text._fstat_r+0x20): undefined reference to `_fstat'
d:/gcc-6.3-arm64-eabi/bin/../lib/gcc/aarch64-none-elf/6.3.1/../../../../aarch64-none-elf/lib\libc.a(lib_a-isattyr.o):
In function `_isatty_r':
isattyr.c:(.text._isatty_r+0x1c): undefined reference to `_isatty'
d:/gcc-6.3-arm64-eabi/bin/../lib/gcc/aarch64-none-elf/6.3.1/../../../../aarch64-none-elf/lib\libc.a(lib_a-lseekr.o):
In function `_lseek_r':
lseekr.c:(.text._lseek_r+0x24): undefined reference to `_lseek'
d:/gcc-6.3-arm64-eabi/bin/../lib/gcc/aarch64-none-elf/6.3.1/../../../../aarch64-none-elf/lib\libc.a(lib_a-readr.o):
In function `_read_r':
readr.c:(.text._read_r+0x24): undefined reference to `_read'
collect2.exe: error: ld returned 1 exit status
d:\gcc-6.3-arm64-eabi\bin>aarch64-none-elf-gcc --specs=rdimon.specs test.c
d:\gcc-6.3-arm64-eabi\bin>
I tried to reconfigure libnosys in the same way as ARM port:
diff -ruN newlib-2.5.0/libgloss/libnosys/configure
newlib-2.5.0/libgloss/libnosys/configure
--- newlib-2.5.0/libgloss/libnosys/configure 2016-12-23
05:33:54.000000000 +0300
+++ newlib-2.5.0/libgloss/libnosys/configure 2017-09-15
13:14:56.412457618 +0300
@@ -2009,6 +2009,8 @@
;;
a29k-amd-udi)
;;
+ aarch64*-*-*)
+ ;;
arc-*-*)
;;
arm*-*-*)
diff -ruN newlib-2.5.0/libgloss/libnosys/configure.in
newlib-2.5.0/libgloss/libnosys/configure.in
--- newlib-2.5.0/libgloss/libnosys/configure.in 2016-12-23
05:33:54.000000000 +0300
+++ newlib-2.5.0/libgloss/libnosys/configure.in 2017-09-14
18:32:27.330466884 +0300
@@ -43,6 +43,8 @@
;;
a29k-amd-udi)
;;
+ aarch64*-*-*)
+ ;;
arc-*-*)
;;
arm*-*-*)
It now compiles so I get final elf, but with warnings:
d:\gcc-6.3-arm64-eabi\bin>aarch64-none-elf-gcc --specs=nosys.specs test.c
d:/gcc-6.3-arm64-eabi/bin/../lib/gcc/aarch64-none-elf/6.3.1/../../../../aarch64-none-elf/lib\libc.a(lib_a-closer.o):
In function `_close_r':
/home/af/GIT/BG/build_gnu/opt/freescale/Earmv8/obj_newlib/aarch64-none-elf/newlib/libc/reent/../../../../../src_newlib/newlib/libc/reent/closer.c:53:
warning: _close is not impl
emented and will always fail
d:/gcc-6.3-arm64-eabi/bin/../lib/gcc/aarch64-none-elf/6.3.1/../../../../aarch64-none-elf/lib\libc.a(lib_a-fstatr.o):
In function `_fstat_r':
/home/af/GIT/BG/build_gnu/opt/freescale/Earmv8/obj_newlib/aarch64-none-elf/newlib/libc/reent/../../../../../src_newlib/newlib/libc/reent/fstatr.c:62:
warning: _fstat is not impl
emented and will always fail
d:/gcc-6.3-arm64-eabi/bin/../lib/gcc/aarch64-none-elf/6.3.1/../../../../aarch64-none-elf/lib\libc.a(lib_a-isattyr.o):
In function `_isatty_r':
/home/af/GIT/BG/build_gnu/opt/freescale/Earmv8/obj_newlib/aarch64-none-elf/newlib/libc/reent/../../../../../src_newlib/newlib/libc/reent/isattyr.c:58:
warning: _isatty is not im
plemented and will always fail
d:/gcc-6.3-arm64-eabi/bin/../lib/gcc/aarch64-none-elf/6.3.1/../../../../aarch64-none-elf/lib\libc.a(lib_a-lseekr.o):
In function `_lseek_r':
/home/af/GIT/BG/build_gnu/opt/freescale/Earmv8/obj_newlib/aarch64-none-elf/newlib/libc/reent/../../../../../src_newlib/newlib/libc/reent/lseekr.c:58:
warning: _lseek is not impl
emented and will always fail
d:/gcc-6.3-arm64-eabi/bin/../lib/gcc/aarch64-none-elf/6.3.1/../../../../aarch64-none-elf/lib\libc.a(lib_a-readr.o):
In function `_read_r':
/home/af/GIT/BG/build_gnu/opt/freescale/Earmv8/obj_newlib/aarch64-none-elf/newlib/libc/reent/../../../../../src_newlib/newlib/libc/reent/readr.c:58:
warning: _read is not implem
ented and will always fail
d:/gcc-6.3-arm64-eabi/bin/../lib/gcc/aarch64-none-elf/6.3.1/../../../../aarch64-none-elf/lib\libc.a(lib_a-writer.o):
In function `_write_r':
/home/af/GIT/BG/build_gnu/opt/freescale/Earmv8/obj_newlib/aarch64-none-elf/newlib/libc/reent/../../../../../src_newlib/newlib/libc/reent/writer.c:58:
warning: _write is not impl
emented and will always fail
Hi do I correctly to configure AArch64 nosys ?