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doc: Document forthcomming NIX_DEBUG degredations

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John Ericson 2017-09-20 11:33:29 -04:00
parent 2d52156793
commit bc0aec5d97
1 changed files with 7 additions and 6 deletions
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doc/stdenv.xml
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@ -1,4 +1,3 @@
<chapter xmlns="http://docbook.org/ns/docbook"
xmlns:xlink="http://www.w3.org/1999/xlink"
xml:id="chap-stdenv">
@ -188,11 +187,13 @@ genericBuild
<varlistentry>
<term><varname>NIX_DEBUG</varname></term>
<listitem><para>If set, <literal>stdenv</literal> will print some
debug information during the build. In particular, the
<command>gcc</command> and <command>ld</command> wrapper scripts
will print out the complete command line passed to the wrapped
tools.</para></listitem>
<listitem><para>
A natural number indicating how much information to log.
If set to 1 or higher, <literal>stdenv</literal> will print moderate debug information during the build.
In particular, the <command>gcc</command> and <command>ld</command> wrapper scripts will print out the complete command line passed to the wrapped tools.
If set to 6 or higher, the <literal>stdenv</literal> setup script will be run with <literal>set -x</literal> tracing.
If set to 7 or higher, the <command>gcc</command> and <command>ld</command> wrapper scripts will also be run with <literal>set -x</literal> tracing.
</para></listitem>
</varlistentry>
</variablelist>