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use -msse4 by default, not -march

This commit is contained in:
Heng Li 2017-07-18 13:56:51 -04:00
parent b4edb0cf55
commit a1addb2949
2 changed files with 14 additions and 1 deletions
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6
Makefile
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@ -1,5 +1,5 @@
CC= gcc CC= gcc
CFLAGS= -g -Wall -O2 -Wc++-compat -march=native CFLAGS= -g -Wall -O2 -Wc++-compat
CPPFLAGS= -DHAVE_KALLOC CPPFLAGS= -DHAVE_KALLOC
INCLUDES= -I. INCLUDES= -I.
OBJS= kthread.o kalloc.o ksw2_extz2_sse.o ksw2_extd2_sse.o misc.o bseq.o \ OBJS= kthread.o kalloc.o ksw2_extz2_sse.o ksw2_extd2_sse.o misc.o bseq.o \
@ -8,6 +8,10 @@ PROG= minimap2
PROG_EXTRA= sdust PROG_EXTRA= sdust
LIBS= -lm -lz -lpthread LIBS= -lm -lz -lpthread
ifeq ($(sse2only),)
CFLAGS+=-msse4
endif
.SUFFIXES:.c .o .SUFFIXES:.c .o
.c.o: .c.o:

9
README.md
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@ -31,6 +31,15 @@ and [longISLND][longislnd]), better chaining and the ability to produce CIGAR
with fast extension alignment (see also [libgaba][gaba] and [ksw2][ksw2]) and with fast extension alignment (see also [libgaba][gaba] and [ksw2][ksw2]) and
piece-wise affine gap cost. piece-wise affine gap cost.
## Installation
For modern x86-64 CPUs, just type `make` in the source code directory. This
will compile a binary `minimap2` which you can copy to your desired location.
If you see compilation errors, try `make sse2only=1` to disable SSE4. Minimap2
will run a little slower. At present, minimap2 does not work with non-x86 CPUs
or ancient CPUs that do not support SSE2. SSE2 is critical to the performance
of minimap2.
## Limitations ## Limitations
* At the alignment phase, minimap2 performs global alignments between minimizer * At the alignment phase, minimap2 performs global alignments between minimizer