The libtool current:revision:age numbers change from 1:2:0 to 2:0:0.
Details:
http://www.gnu.org/software/libtool/manual/libtool.html#Updating-version-info
This changes the library filename (e.g. on Linux) from libsigrok.so.1.0.2
to libsigrok.so.2.0.0, the SONAME (+symlink) becomes libsigrok.so.2.
# Carefully read the libtool docs before updating these numbers!
# The algorithm for determining which number to change (and how) is nontrivial!
# http://www.gnu.org/software/libtool/manual/libtool.html#Updating-version-info
-SR_LIB_VERSION_CURRENT=1
-SR_LIB_VERSION_REVISION=2
+SR_LIB_VERSION_CURRENT=2
+SR_LIB_VERSION_REVISION=0
SR_LIB_VERSION_AGE=0
SR_LIB_VERSION="$SR_LIB_VERSION_CURRENT:$SR_LIB_VERSION_REVISION:$SR_LIB_VERSION_AGE"
SR_LIB_LDFLAGS="-version-info $SR_LIB_VERSION"