How to reduce binary size in C++
How to reduce binary size in C++
About the Book
By reading this book you will learn how you will learn about different factors influencing the size of your C++ binaries:
- different ways of programming, including runtime polymorphism, templates, inlining, etc
- various compiler and linker settings
- the intersection of the above two, such as RTTI and exceptions
About the Author
Table of Contents
- 1All that you need to know about binary files
- How executables are generated
- Parts of an executable
- Main characteristics of an executable
- The most important executable formats
- How to inspect C++ binary files
- Summary
- 2Ways of coding to reduce binary size
- How should we initialize objects?
- Member ordering and binary sizes
- Special member functions and binary size
- Virtual and binary sizes
- Templates and binary size
- Summary
- 3Reduce binary size with different compiler and linker settings
- Optimize for space:
-Os
- Link Time Optimization (
-flto)
-fdata-sections/-ffunction-sectionsand-Wl,--gc-sections
-Wl,--icf=allor-Wl,--icf==safe
-Wl,-sand-Wl,--strip-all
-Wl,--as-needed
-fno-unroll-loops
-mllvm -inline-threshold=
-fstack-protector
- Summary
- Optimize for space:
- 4In the intersection of coding techniques and compiler flags to limit binary sizes
- Forbid RTTI for cleaner and smaller code
- Exceptions are not zero-cost when it comes to binary size
- Make
noexceptwhatever it makes sense
- Summary
- 5Conclusion
- 6Appendix
- Special member functions
- How to pass functions to functions
- 1All that you need to know about binary files
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