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https://www.thegeekstuff.com/2012/08/gprof-tutorial/
GPROF Tutorial – How to use Linux GNU GCC Profiling Tool. by Himanshu Arora on August 10, 2012. Tweet. Profiling is an important aspect of software programming. Through profiling one can determine the parts in program code that are time consuming and need to be re-written. ... Support Us. Support this blog by purchasing one of my ebooks. Bash ...
https://gcc.gnu.org/onlinedocs/gcc-9.1.0/gcc/Cross-profiling.html
To support cross-profiling, a program compiled with -fprofile-arcs can relocate the data files based on two environment variables: GCOV_PREFIX contains the prefix to add to the absolute paths in the object file. Prefix can be absolute, or relative. The default is no prefix.
https://sourceware.org/binutils/docs/gprof/Compiling.html
The solution is to link against a static version of the library containing the profiling support code, which for gcc users can be done via the ‘ -static ’ or ‘ -static-libgcc ’ command-line option.
http://cegcc.sourceforge.net/docs/profile.html
Profiling support depends on special startup code (in gcrt3.o) and an exit handler (mcleanup) installed by it. 2.2.1 gcrt3.o The source of gcrt3.o is in src/mingw/profile/gcrt0.c. It provides for the function _monstartup whose purpose is to call monstartup and register _mcleanup as an exit handler via atexit.
https://www.gnu.org/software/gcc/projects/tree-profiling.html
As of June 2004, GCC does support profile feedback and branch prediction and several algorithms use the profile to improve performance. The compiler can obtain profile information by trying to predict all branches appearing in the intermediate representation for the application during the compilation process, or from profile feedback collected during test runs of the application.
https://sourceware.org/binutils/docs/gprof/Line_002dby_002dline.html
Newer versions of gcc use a different program - gcov - to display line-by-line profiling information. With the older versions of gcc the program usually has to be compiled with a ‘ -g ’ option, in addition to ‘ -pg ’, in order to generate debugging symbols for tracking source code lines.
https://stackoverflow.com/questions/26491948/how-to-use-gprof-with-cmake
In order to use gprof, you need to both compile and link with the -pg option.. CMakeLists.txt should have a setup like Ami Tavory mentioned, where command line options are combined with hardcoded options, so a good way to do this with a well built cmake project is:
https://github.com/VerySleepy/verysleepy/wiki/Profiling-MinGW-Programs
Feb 02, 2017 · Very Sleepy supports profiling programs built using the MinGW toolchain. For this purpose, it is distributed with two implementations of the DbgHelp library supporting MinGW: Wine DbgHelp ( dbghelpw.dll and dbghelpw_wow64.dll ), which is based on the Wine implementation of …
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