diff --git a/CMakeLists.txt b/CMakeLists.txt
index f7593b28..e671129e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -24,7 +24,6 @@ option(BUILD_D "Build libg2_d.a" ON)
 option(BUILD_WITH_W3EMC "Build with NCEPLIBS-w3emc, enabling some GRIB1 functionality" ON)
 option(BUILD_UTILS "Build grib utilities" ON)
 option(USE_AEC "Build with AEC (CCSDS) compression support" OFF)
-option(G2C_COMPARE "Enable copygb2 tests using g2c_compare" OFF)
 
 # Developers can use this option to specify a local directory which
 # holds the test files. They will be copied instead of fetching the
@@ -73,7 +72,7 @@ endif()
 # There was a bug in jasper for the intel compiler that was fixed in
 # 2.0.25.
 find_package(Jasper 2.0.25 REQUIRED)
-find_package(g2c REQUIRED)
+find_package(g2c 2.1.0 REQUIRED)
 find_package(PNG REQUIRED)
 find_package(bacio REQUIRED)
 if(bacio_VERSION LESS 2.5.0)
@@ -89,11 +88,6 @@ if (BUILD_WITH_W3EMC)
   endif()
 endif()
 
-# We need g2c if G2C_COMPARE is chosen.
-if (G2C_COMPARE)
-  find_package(g2c 1.7.0 REQUIRED)
-endif()
-
 # Figure whether user wants a _4, a _d, or both libraries.
 if(BUILD_4 AND BUILD_D)
   set(kinds "4" "d")