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Editorial Team
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Asked: 2026-05-18T21:03:06+00:00

I am looking at the dry run after running lmbench makefile. I could not

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I am looking at the dry run after running lmbench makefile. I could not understand what is all doing in this line:

cd src && make
make[1]: Entering directory `/home/ankur/lmbench/lmbench-3.0-a9/src'
env CFLAGS=-O MAKE="`../scripts/make`" MAKEFLAGS="wn" CC="`../scripts/compiler`"     OS="`../scripts/os`" ../scripts/build all
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1 Answer

  1. Editorial Team

    Short answer: It is a parameter to the script ../scripts/build.

    Breaking that line down (apologies if I’m explaining stuff you already know):

    • env – sets up the environment for the called script. Format is env VAR1=value1 VAR2=value2 command argument1 argument2. Putting - (which isn’t here) would empty the environment, but this usage adds to/updates the existing one.
    • CFLAGS=-O MAKE="`../scripts/make`" MAKEFLAGS="wn" CC="../scripts/compiler" OS="`../scripts/os`" – the environment variables that are being set. The backticks (`../scripts/make` indicate executing a script to get the value to place into the variables.
    • ../scripts/build – This is the command to run.
    • all – This is the first (and only) argument to the command.
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