FAQ

Table of Contents

• Frequently Asked Questions
  • Compiler Errors
  • Linking error with "undefined reference" to gtirb

Frequently Asked Questions

• I get compiler errors when I try to compile programs using GTIRB. How can I make them go away?
• Linking error with "undefined reference" to gtirb::

Compiler Errors

Q: I get compiler errors when I try to compile programs using GTIRB. How can I make them go away?

A: GTIRB requires C++17, including the C++17 standard library. If your compiler does not use C++17 by default, you will need to explicitly specify it when compiling programs that use GTIRB.

For example:

g++ --std=c++17 my_gtirb_program.cpp -lgtirb -o my_gtirb_program

Linking error with "undefined reference" to gtirb

Q: I get linker errors when I try to compile and link programs using GTIRB. How can I make them go away?

A: This isn't GTIRB specific, but if you place the -lgtirb on your compilation line before the source file the linker will sometimes throw away the symbols from the GTIRB library which it doesn't think it needs (and if it hasn't read your source yet it won't think it needs much). So if for example,

g++ --std=c++17 -lgtirb my_gtirb_program.cpp

doesn't work for you, then try this instead.

g++ --std=c++17 my_gtirb_program.cpp -lgtirb