#define LIBSIGROK_CONFIG_H /* To stop multiple inclusions. */])
AH_BOTTOM([#endif /* LIBSIGROK_CONFIG_H */])
-CFLAGS="-g -Wall -Wextra"
+# Enable more compiler warnings via -Wall and -Wextra. Add -fvisibility=hidden
+# and enforce use of SR_API to explicitly mark all public API functions.
+CFLAGS="-g -Wall -Wextra -fvisibility=hidden"
# Checks for programs.
AC_PROG_CXX