--- build/unix/Makefile.am.orig	2023-08-06 08:51:47 UTC
+++ build/unix/Makefile.am
@@ -369,7 +369,7 @@ libsse2_la_SOURCES = \
         ../../src/fstb/ToolsSse2.h \
         ../../src/fstb/ToolsSse2.hpp
 
-libsse2_la_CXXFLAGS = $(AM_CXXFLAGS) -msse2
+libsse2_la_CXXFLAGS = $(AM_CXXFLAGS)
 libfmtconv_la_LIBADD += libsse2.la
 fmtcltest_LDADD += libsse2.la
 noinst_LTLIBRARIES += libsse2.la
@@ -379,7 +379,7 @@ commonsrcavx = \
 
 libavx_la_SOURCES = $(commonsrcavx)
 
-libavx_la_CXXFLAGS = $(AM_CXXFLAGS) -mavx
+libavx_la_CXXFLAGS = $(AM_CXXFLAGS)
 libfmtconv_la_LIBADD += libavx.la
 fmtcltest_LDADD += libavx.la
 noinst_LTLIBRARIES += libavx.la
@@ -397,7 +397,7 @@ libavx2_la_SOURCES = $(commonsrcavx2) \
         ../../src/fstb/ToolsAvx2.h \
         ../../src/fstb/ToolsAvx2.hpp
 
-libavx2_la_CXXFLAGS = $(AM_CXXFLAGS) -mavx2
+libavx2_la_CXXFLAGS = $(AM_CXXFLAGS)
 libfmtconv_la_LIBADD += libavx2.la
 fmtcltest_LDADD += libavx2.la
 noinst_LTLIBRARIES += libavx2.la