Gambit-C v4.5.2 is now available.
Changelog: http://www.iro.umontreal.ca/~gambit/repo/.cgit.cgi/Gambit/log/
The sources and prebuilt distributions can be obtained from the Gambit web site by visiting one of the following links.
sources: http://www.iro.umontreal.ca/~gambit/download/gambit/v4.5/source/gambc-v4_5_2... (for typical users) http://www.iro.umontreal.ca/~gambit/download/gambit/v4.5/source/gambc-v4_5_2... (for developers)
prebuilt: http://www.iro.umontreal.ca/~gambit/download/gambit/v4.5/prebuilt/gambc-v4_5... http://www.iro.umontreal.ca/~gambit/download/gambit/v4.5/prebuilt/gambc-v4_5... http://www.iro.umontreal.ca/~gambit/download/gambit/v4.5/prebuilt/gambc-v4_5... http://www.iro.umontreal.ca/~gambit/download/gambit/v4.5/prebuilt/gambc-v4_5... http://www.iro.umontreal.ca/~gambit/download/gambit/v4.5/prebuilt/gambc-v4_5... http://www.iro.umontreal.ca/~gambit/download/gambit/v4.5/prebuilt/gambc-v4_5... http://www.iro.umontreal.ca/~gambit/download/gambit/v4.5/prebuilt/gambc-v4_5... http://www.iro.umontreal.ca/~gambit/download/gambit/v4.5/prebuilt/gambc-v4_5...