diff options
Diffstat (limited to 'binutils/patches/002_gprof_profile_arcs.patch')
| -rw-r--r-- | binutils/patches/002_gprof_profile_arcs.patch | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/binutils/patches/002_gprof_profile_arcs.patch b/binutils/patches/002_gprof_profile_arcs.patch new file mode 100644 index 0000000..7503927 --- /dev/null +++ b/binutils/patches/002_gprof_profile_arcs.patch @@ -0,0 +1,27 @@ +Author: Chris Chimelis <chris@debian.org> +Description: Add more documentation about profiling and -fprofile-arcs. +--- a/gprof/gprof.texi ++++ b/gprof/gprof.texi +@@ -149,6 +149,10 @@ + 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 +@@ -280,6 +284,11 @@ + 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 |