Since Autoconf places some important feature flags only into the
configuration header, it is necessary to include it globally to
guarantee a consistent build.
Move the include flags for files in the source tree from
configure.ac to Makefile.am where they belong. Also use
AM_CPPFLAGS instead of CFLAGS/CXXFLAGS to make sure the
files in the build/source tree are always picked up first.
Also, remove the include/libsigrok sub-directory from the
search path, thereby making the <libsigrok/> prefix mandatory
when building libsigrok itself. This matches the convention
already imposed on users of the library.
Add new error code which can be used to notify the user about
general input/output errors.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Gerhard Sittig
Daniel Elstner
Bert Vermeulen
Uwe Hermann
Bartosz Golaszewski