Does both of these command work on the Linux command line?
pkg-config gtkmm-2.4 --cflags
pkg-config gtkmm-2.4 --libs
If yes, try adding the one with "--cflags" to the CB Project in Compiler "Other options"
Project -> Build Options
Select correct target from left hand list
Tab: Compiler Settings
Sub-Tab: "Other Options"
Enter the below line; NOTE must use the backtick `
`pkg-config gtkmm-2.4 --cflags`
If yes, try adding the one with "--libs" to the CB Project in "Other Linker Options"
Project -> Build Options
Select correct target from left hand list
Tab: Linker settings
Box: "Other linker options"
Enter the below line; NOTE must use the backtick `
`pkg-config gtkmm-2.4 --libs`
NOTE: You likely need to save the CB project and reopen the project for this change to take effect.
You might need to exit CB and restart for it to take effect
Tim S.