02_cache/00_lmbench

Hands-on: Building LMbench

0. Legend

• [src_dir] : directory of source
• [rist_dir]: this directory

1. Get source files

$ cd [rist_dir]
$ bash 00_dl.sh
$ ls
lmbench-3.0-a9.tgz 
$ tar -xzvf lmbench-3.0-a9.tgz

2. Preparation

2.1 Edit build script

• One needs to modify LDLIBS in [src_dir]/scripts/build, such as LDLIBS="${LDLIBS} -lm".
• We note that ${LDLIBS} is set in [rist_dir]/01_build.sh.

$ cd [src_dir]/scripts
$ ls build
build 
$ cp build build.orig # back-up
# Launch any editors, such as vi.
$ vi build
# Please check LDLIBS variable in build and properly modify it. 
...
#LDLIBS=-lm            # Original 
LDLIBS="${LDLIBS} -lm" # Modified 
...

2.2 Edit Makefile

• One needs to change CFLAGS for rule lmbench in [src_dir]/src/Makefile from -O to the environment variable, such as CFLAGS="$(CFLAGS)".
• We note that $(CFLAGS) is set in [rist_dir]/01_build.sh.

$ cd [src_dir]/src
$ ls Makefile
Makefile
$ cp Makefile Makefile.orig # back-up
# Launch any editors, such as vi.
$ vi build
# Please check CFLAGS for lmbench and properly modify it.
...
lmbench: $(UTILS)
#        @env CFLAGS=-O (...) all # Original
#        -@env CFLAGS=-O (...) opt # Original
        @env CFLAGS="$(CFLAGS)" (...) all # Modified
        -@env CFLAGS="$(CFLAGS)" (...) opt # Modified
...

3. Compile

• Check script 01_build.sh to compile LMbench.
• The benchmark programs may be installed in [src_dir]/bin/aarch64-linux-gnu if everything is successful.

$ cd [src_dir]/src
$ cp [rist_dir]/01_build.sh .
$ bash 01_build.sh &> 01_build.log  # < 2 min.