PR4283, update gprof manual with note about GMON_OUT_PREFIX

	PR 4283
	* gprof.texi (Executing): Note GMON_OUT_PREFIX environment variable.

diff --git a/gprof/ChangeLog b/gprof/ChangeLog
index 24deb11f95b3bcdd5a88e9d5bd2ce82c737871ee..6d73b3cc8c98102bb6cafe9159180750302ca34e 100644 (file)
--- a/gprof/ChangeLog
+++ b/gprof/ChangeLog
@@ -1,3 +1,8 @@
+2021-06-03   Ben Asselstine  <benasselstine@gmail.com>
+
+       PR 4283
+       * gprof.texi (Executing): Note GMON_OUT_PREFIX environment variable.
+
 2021-05-08  Mike Frysinger  <vapier@gentoo.org>
 
        * Makefile.am (html-local, doc/gprof/index.html): New targets.

diff --git a/gprof/gprof.texi b/gprof/gprof.texi
index b2b204822d819e9cbc372c47d697fcfeb4f606e1..5085159bc70a27e8a8ea5204a6f37f7bcb92a367 100644 (file)
--- a/gprof/gprof.texi
+++ b/gprof/gprof.texi
@@ -381,9 +381,11 @@ initialization and in cleanup, but not much else.
 
 Your program will write the profile data into a file called @file{gmon.out}
 just before exiting.  If there is already a file called @file{gmon.out},
-its contents are overwritten.  There is currently no way to tell the
-program to write the profile data under a different name, but you can rename
-the file afterwards if you are concerned that it may be overwritten.
+its contents are overwritten.  You can rename the file afterwards if you
+are concerned that it may be overwritten.  If your system libc allows you
+may be able to write the profile data under a different name.  Set the
+GMON_OUT_PREFIX environment variable; this name will be appended with
+the PID of the running program.
 
 In order to write the @file{gmon.out} file properly, your program must exit
 normally: by returning from @code{main} or by calling @code{exit}.  Calling