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build: Change configure nasm min test for AVX512

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Due to bug in nasm on vinserti32x8 instruction, need nasm v2.13 or
better to build new AVX512 igzip files.  Changed the configure test
and doc to reflect.

Change-Id: Iceaf65187cbb2d63c29f9c0f19346f03bb484a94
Signed-off-by: Greg Tucker <greg.b.tucker@intel.com>
This commit is contained in:
Greg Tucker 2017-12-20 11:46:50 -07:00
parent 249deb378d
commit 35dc4f0b0c
2 changed files with 5 additions and 4 deletions
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3
README.md
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@ -28,7 +28,8 @@ Building ISA-L
### Prerequisites
* Assembler: nasm v2.11.01 or later or yasm version 1.2.0 or later.
* Assembler: nasm v2.11.01 or later (nasm v2.13 or better suggested for building in AVX512 support)
or yasm version 1.2.0 or later.
* Compiler: gcc, clang, icc or VC compiler.
* Make: GNU 'make' or 'nmake' (Windows).
* Optional: Building with autotools requires autoconf/automake packages.

6
configure.ac
View File

@ -85,8 +85,8 @@ else
with_modern_nasm=yes
AC_MSG_RESULT([yes])
AC_MSG_CHECKING([for optional nasm AVX512 support])
AC_LANG_CONFTEST([AC_LANG_SOURCE([[vpshufb zmm0, zmm1, zmm2;]])])
sed -i -e '/vpshufb/!d' conftest.c
AC_LANG_CONFTEST([AC_LANG_SOURCE([[vinserti32x8 zmm0, ymm1, 1;]])])
sed -i -e '/vinsert/!d' conftest.c
if nasm -f elf64 conftest.c 2> /dev/null; then
nasm_knows_avx512=yes
AC_MSG_RESULT([yes])
@ -109,7 +109,7 @@ if test x"$AS" = x""; then
elif test x"$with_modern_nasm" = x"yes"; then
AS=nasm
else
AC_MSG_ERROR([No modern yasm or nasm found as required. Yasm should be 1.2.0 or later, and nasm should be v2.11.01 or later.])
AC_MSG_ERROR([No modern yasm or nasm found as required. Yasm should be 1.2.0 or later, and nasm should be v2.11.01 or later (v2.13 for AVX512).])
fi
fi
echo "Using assembler $AS"