Cmake: dont touch CMAKE_INSTALL_PREFIX

CMakeLists.txt

@@ -137,9 +137,8 @@ if (ENABLE_TESTS)
     add_subdirectory (dbms/tests)
 endif (ENABLE_TESTS)
 
-# Installation prefix
-if (NOT CMAKE_SYSTEM MATCHES "FreeBSD")
-    set (CMAKE_INSTALL_PREFIX /usr)
+# when installing to /usr - place configs to /etc but for /usr/local place to /usr/local/etc
+if (CMAKE_INSTALL_PREFIX MATCHES "/usr")
     set (CLICKHOUSE_ETC_DIR /etc)
 else ()
     set (CLICKHOUSE_ETC_DIR ${CMAKE_INSTALL_PREFIX}/etc)

debian/rules

@@ -23,7 +23,7 @@ CC := $(DEB_HOST_GNU_TYPE)-$(DEB_CC)$(DEB_COMPILER_VERSION)
 CXX := $(DEB_HOST_GNU_TYPE)-$(DEB_CXX)$(DEB_COMPILER_VERSION)
 endif
 
-CMAKE_FLAGS ?= -DCMAKE_CXX_COMPILER=`which $(CXX)` -DCMAKE_C_COMPILER=`which $(CC)` $(CMAKE_FLAGS_ADD)
+CMAKE_FLAGS ?= -DCMAKE_CXX_COMPILER=`which $(CXX)` -DCMAKE_C_COMPILER=`which $(CC)` -DCMAKE_INSTALL_PREFIX=/usr $(CMAKE_FLAGS_ADD)
 
 ifdef CMAKE_BUILD_TYPE
 	CMAKE_FLAGS += -DCMAKE_BUILD_TYPE=$(CMAKE_BUILD_TYPE)