--- configure.in
+++ configure.in
@@ -386,7 +386,7 @@
 AC_CHECK_LIB(c,main)
 AC_CHECK_LIB(m, main)
 AC_CHECK_LIB(crypt, main)
-AC_CHECK_LIB(curses, main)
+AC_CHECK_LIB(ncurses, main)
 dnl AC_CHECK_LIB(termcap, main)
 if test "$EDITLINE_FLG" = "Y"; then
   AC_SUBST(EDITLINE_A, -leditline)
--- builds/posix/prefix.linux
+++ builds/posix/prefix.linux
@@ -22,8 +22,8 @@
 
 # -fno-builtin is used because GCC 3.0-3.2.2 had bug with builtins expansion
 # you may remove it if engine is getting compiled with any other GCC version
-PROD_FLAGS=-ggdb -O3 -march=i586 -mcpu=i686 -fno-omit-frame-pointer -fno-builtin -DNDEBUG -DLINUX -pipe -MMD -fPIC
-DEV_FLAGS=-ggdb -DLINUX -DDEBUG_GDS_ALLOC -pipe -MMD -p -fPIC -Wall -Wno-switch
+PROD_FLAGS=-fno-omit-frame-pointer -fno-builtin -DNDEBUG -DLINUX -MMD -fPIC
+DEV_FLAGS=-DLINUX -DDEBUG_GDS_ALLOC -MMD -fPIC -Wall -Wno-switch
 
 OS_ServerFiles=inet_server.cpp
 
--- builds/posix/prefix.linux_amd64
+++ builds/posix/prefix.linux_amd64
@@ -20,8 +20,8 @@
 
 LD=@CXX@
 
-PROD_FLAGS=-ggdb -O3 -fno-omit-frame-pointer -DNDEBUG -DLINUX -DAMD64 -pipe -MMD -fPIC -fmessage-length=0
-DEV_FLAGS=-ggdb -DLINUX -DAMD64 -pipe -MMD -p -fPIC -Wall -Wno-switch -Wno-parentheses -Wno-unknown-pragmas -Wno-unused-variable -fmessage-length=0
+PROD_FLAGS=-fno-omit-frame-pointer -DNDEBUG -DLINUX -DAMD64 -MMD -fPIC -fmessage-length=0
+DEV_FLAGS=-DLINUX -DAMD64 -MMD -fPIC -Wall -Wno-switch -Wno-parentheses -Wno-unknown-pragmas -Wno-unused-variable -fmessage-length=0
 
 OS_ServerFiles=inet_server.cpp
 
--- builds/posix/prefix.linux_sparc32
+++ builds/posix/prefix.linux_sparc32
@@ -22,8 +22,8 @@
 
 # -fno-builtin is used because GCC 3.0-3.2.2 had bug with builtins expansion
 # you may remove it if engine is getting compiled with any other GCC version
-PROD_FLAGS=-m32 -mcpu=ultrasparc -mtune=ultrasparc -O3 -DNDEBUG -DLINUX -pipe -MMD -fPIC -Dsparc
-DEV_FLAGS=-ggdb -m32 -DLINUX -DDEBUG_GDS_ALLOC -pipe -MMD -p -fPIC -Wall -Wno-switch -Dsparc
+PROD_FLAGS=-DNDEBUG -DLINUX -MMD -fPIC -Dsparc
+DEV_FLAGS=--DLINUX -DDEBUG_GDS_ALLOC -MMD -fPIC -Wall -Wno-switch -Dsparc
 
 OS_ServerFiles=inet_server.cpp