Autotools : how to set global compilation flag

Question

I have a project with several sources directories :

src/A
   /B
   /C

In each, the Makefile.am contains

AM_CXXFLAGS = -fP         


        

Answer 1

Use EXTRA_CFLAGS in configure.ac

For example for your case it would be this:

EXTRA_CFLAGS=-fPIC -Wall -Wextra