Fix Boost dep for CentOS 6

Our install instructions use a source build of Boost for CentOS 6, so
our packages need to be adjusted to allow for this.

cpackEngineRPM.cmake

@@ -73,7 +73,21 @@ SETA(CPACK_RPM_libs_PACKAGE_PROVIDES "mariadb-columnstore-libs")
 SETA(CPACK_RPM_platform_PACKAGE_PROVIDES "mariadb-columnstore-platform")
 SETA(CPACK_RPM_storage-engine_PACKAGE_PROVIDES "mariadb-columnstore-storage-engine")
 
-SETA(CPACK_RPM_platform_PACKAGE_REQUIRES "expect" "boost >= 1.53.0" "mariadb-columnstore-libs" "net-snmp-libs")
+# Boost is a source build in CentOS 6 so don't require it as a package
+SET(REDHAT_VERSION_NUMBER OFF)
+IF (EXISTS "/etc/redhat-release")
+    file (READ "/etc/redhat-release" REDHAT_VERSION)
+    string(REGEX MATCH "release ([0-9]+)" CENTOS "${REDHAT_VERSION}")
+    set(REDHAT_VERSION_NUMBER "${CMAKE_MATCH_1}")
+ENDIF ()
+if (${REDHAT_VERSION_NUMBER} EQUAL 6)
+    SETA(CPACK_RPM_platform_PACKAGE_REQUIRES "expect" "mariadb-columnstore-libs" "net-snmp-libs")
+    # Disable auto require as this will also try to pull Boost via RPM
+    SET(CPACK_RPM_PACKAGE_AUTOREQPROV " no")
+else ()
+    SETA(CPACK_RPM_platform_PACKAGE_REQUIRES "expect" "boost >= 1.53.0" "mariadb-columnstore-libs" "net-snmp-libs")
+endif()
+
 SETA(CPACK_RPM_storage-engine_PACKAGE_REQUIRES "mariadb-columnstore-libs")
 
 SET(CPACK_RPM_platform_POST_INSTALL_SCRIPT_FILE ${CMAKE_SOURCE_DIR}/build/postInstall_platform.sh)