[committed] libstdc++: Fix example preprocessor command in FAQ [PR103877]
Jonathan Wakely
jwakely@redhat.com
Wed Jan 5 13:48:05 GMT 2022
Tested powerpc64le-linux, pushed to trunk.
libstdc++-v3/ChangeLog:
PR libstdc++/103877
* doc/xml/faq.xml: Add '-x c++' to preprocessor command.
* doc/html/faq.html: Regenerate.
---
libstdc++-v3/doc/html/faq.html | 2 +-
libstdc++-v3/doc/xml/faq.xml | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/libstdc++-v3/doc/html/faq.html b/libstdc++-v3/doc/html/faq.html
index 967e5f5f348..f49b84c4c33 100644
--- a/libstdc++-v3/doc/html/faq.html
+++ b/libstdc++-v3/doc/html/faq.html
@@ -456,7 +456,7 @@
<code class="varname">CPLUSPLUS_CPP_SPEC</code> in
the gcc config headers for your target (and try changing them to
see what happens when building complicated code). You can also run
- <span class="command"><strong>g++ -E -dM - < /dev/null"</strong></span> to display
+ <span class="command"><strong>g++ -E -dM -x c++ /dev/null</strong></span> to display
a list of predefined macros for any particular installation.
</p><p>This has been discussed on the mailing lists
<a class="link" href="http://gcc.gnu.org/cgi-bin/htsearch?method=and&format=builtin-long&sort=score&words=_XOPEN_SOURCE+Solaris" target="_top">quite a bit</a>.
diff --git a/libstdc++-v3/doc/xml/faq.xml b/libstdc++-v3/doc/xml/faq.xml
index e419d3c22a0..9ae4966ecea 100644
--- a/libstdc++-v3/doc/xml/faq.xml
+++ b/libstdc++-v3/doc/xml/faq.xml
@@ -580,7 +580,7 @@
<varname>CPLUSPLUS_CPP_SPEC</varname> in
the gcc config headers for your target (and try changing them to
see what happens when building complicated code). You can also run
- <command>g++ -E -dM - < /dev/null"</command> to display
+ <command>g++ -E -dM -x c++ /dev/null</command> to display
a list of predefined macros for any particular installation.
</para>
<para>This has been discussed on the mailing lists
--
2.31.1
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