How to solve "Error: can't open elf64 for reading: No such file or directory"

Question

I was compiling libvpx-1.7.0 on ubuntu-20.04 the configure command is:

./configure --disable-vp8 --enable-vp9 --enable-libyuv --target=x86_64-linux-gcc --enable-debug --disable-install-docs --log=yes --enable-internal-stats --disable-unit-tests --disable-docs --disable-tools --enable-webm-io --disable-optimizations

the make command is:

make

then I an error:

 [AS] vpx_ports/emms_mmx.asm.o
Assembler messages:
Error: can't open elf64 for reading: No such file or directory
vpx_ports/emms_mmx.asm:2: Error: no such instruction: `copyright (c) 2010 The WebM project authors. All Rights Reserved.'
vpx_ports/emms_mmx.asm:4: Error: no such instruction: `use of this source code is governed by a BSD-style license'
vpx_ports/emms_mmx.asm:5: Error: no such instruction: `that can be found in the LICENSE file in the root of the source'
vpx_ports/emms_mmx.asm:6: Error: no such instruction: `tree. An additional intellectual property rights grant can be found'
vpx_ports/emms_mmx.asm:7: Error: junk `file PATENTS.  All contributing project authors may' after expression
vpx_ports/emms_mmx.asm:7: Error: operand size mismatch for `in'
vpx_ports/emms_mmx.asm:8: Error: no such instruction: `be found in the AUTHORS file in the root of the source tree.'
vpx_ports/emms_mmx.asm:12: Error: junk at end of line, first unrecognized character is `%'
vpx_ports/emms_mmx.asm:14: Error: no such instruction: `section .text'
vpx_ports/emms_mmx.asm:15: Error: invalid character '(' in mnemonic
vpx_ports/emms_mmx.asm:16: Error: invalid character '(' in mnemonic

What can I do to solve the problem?

I can compile libvpx and run vpxdec last night, at first I didn't add the configure option "--disable-optimizations". After the first time I add "--disable-optimizations" I can't compile it any more, no matter whether "--disable-optimizations" is used.

Answer 1

May be there were something that changed my environment variant. I finally find out that I was using a wrong assembler. Just adding the option "--as=yasm" at configure command can fix the error.