Hi all, I just cloned from git clone https://git.centos.org/git/rpms/atlas And rpmbuild is failing with error in building ATLAS:- make[1]: Leaving directory `/home/sudhanshu/rpmbuild/BUILD/ATLAS/x86_64_base' DONE configure + '[' base = base ']' + sed -i 's#ARCH =.*#ARCH = P4E64SSE3#' Make.inc + sed -i s#-DATL_AVX## Make.inc + sed -i s#-mavx#-msse3# Make.inc + echo 'base makefile edited' base makefile edited + make build make -f Make.top build make[1]: Entering directory `/home/sudhanshu/rpmbuild/BUILD/ATLAS/x86_64_base' cd bin/ ; make xatlas_build make[2]: Entering directory `/home/sudhanshu/rpmbuild/BUILD/ATLAS/x86_64_base/bin' /usr/bin/x86_64-redhat-linux-gcc -DL2SIZE=4194304 -I/home/sudhanshu/rpmbuild/BUILD/ATLAS/x86_64_base/include -I/home/sudhanshu/rpmbuild/BUILD/ATLAS/x86_64_base/..//include -I/home/sudhanshu/rpmbuild/BUILD/ATLAS/x86_64_base/..//include/contrib -DAdd_ -DF77_INTEGER=int -DStringSunStyle -DATL_OS_Linux -DATL_ARCH_UNKNOWNx86 -DATL_CPUMHZ=2399 MAC -DATL_AVX -DATL_SSE3 -DATL_SSE2 -DATL_SSE1 -DATL_USE64BITS -DATL_GAS_x8664 -m64 -DWALL -DATL_FULL_LAPACK -DATL_NCPU=4 -O -fomit-frame-pointer -g -fstack-protector-strong -Wa,--noexecstack -fPIC -m64 -c /home/sudhanshu/rpmbuild/BUILD/ATLAS/x86_64_base/..//bin/atlas_tee.c x86_64-redhat-linux-gcc: error: MAC: No such file or directory make[2]: *** [atlas_tee.o] Error 1 make[2]: Leaving directory `/home/sudhanshu/rpmbuild/BUILD/ATLAS/x86_64_base/bin' make[1]: *** [build] Error 2 make[1]: Leaving directory `/home/sudhanshu/rpmbuild/BUILD/ATLAS/x86_64_base' make: *** [build] Error 2 error: Bad exit status from /var/tmp/rpm-tmp.LYBFLC (%build) RPM build errors: Bad exit status from /var/tmp/rpm-tmp.LYBFLC (%build) "log" 465L, 31535C ----- uname -a: Linux localhost.localdomain 3.10.0-327.el7.x86_64 #1 SMP Thu Nov 19 22:10:57 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux -bash-4.2$ ----- Any pointers? I am not sure, why MAC is getting added to Makefile on my machine? Regards Sudhanshu Bhutani