Konstantin Demin
8c29d0a2c2
version: 2.45-4 (UNRELEASED) commit: bf4f75f17a4f370adc9bf9feca09710ce76ecc63
28 lines
1.2 KiB
Diff
28 lines
1.2 KiB
Diff
Author: Chris Chimelis <chris@debian.org>
|
|
Description: Add more documentation about profiling and -fprofile-arcs.
|
|
--- a/gprof/gprof.texi
|
|
+++ b/gprof/gprof.texi
|
|
@@ -145,6 +145,10 @@ its symbol table and the call graph prof
|
|
If more than one profile file is specified, the @code{gprof}
|
|
output shows the sum of the profile information in the given profile files.
|
|
|
|
+If you use gcc 2.95.x or 3.0 to compile your binaries, you may need
|
|
+to add the @samp{-fprofile-arcs} to the compile command line in order
|
|
+for the call graphs to be properly stored in gmon.out.
|
|
+
|
|
@code{Gprof} calculates the amount of time spent in each routine.
|
|
Next, these times are propagated along the edges of the call graph.
|
|
Cycles are discovered, and calls into a cycle are made to share the time
|
|
@@ -276,6 +280,11 @@ to do the linking, simply specify @samp{
|
|
options. The same option, @samp{-pg}, alters either compilation or linking
|
|
to do what is necessary for profiling. Here are examples:
|
|
|
|
+If you use gcc 2.95.x or 3.0.x, you may need to add the
|
|
+@samp{-fprofile-arcs} option to the compile line along with @samp{-pg}
|
|
+in order to allow the call-graphs to be properly included in the gmon.out
|
|
+file.
|
|
+
|
|
@example
|
|
cc -g -c myprog.c utils.c -pg
|
|
cc -o myprog myprog.o utils.o -pg
|