diff --git a/Makefile.FreeBSD b/Makefile.FreeBSD
index 9a9b438..f66c851 100644
--- a/Makefile.FreeBSD
+++ b/Makefile.FreeBSD
@@ -10,10 +10,10 @@
 BUILDDIR =
 CC ?= gcc
 
-CFLAGS = -c -DNOODBC -DWITH_STD_MALLOC -DFD_SETSIZE=4096 -DWITH_POLL
+CFLAGS = -c -O -fno-strict-aliasing -DNOODBC -DWITH_STD_MALLOC -DFD_SETSIZE=4096 -DWITH_POLL
 COUT = -o 
 LN ?= ${CC}
-LDFLAGS = -pthread
+LDFLAGS = -pthread -O -fno-strict-aliasing 
 # -lpthreads may be reuqired on some platforms instead of -pthreads
 # -ldl or -lld may be required for some platforms
 DCFLAGS = -fpic
diff --git a/Makefile.Linux b/Makefile.Linux
index 7470126..39e124f 100644
--- a/Makefile.Linux
+++ b/Makefile.Linux
@@ -10,11 +10,11 @@
 BUILDDIR =
 CC = gcc
 
-CFLAGS = -g -O2 -c -pthread -DWITHSPLICE -DGETHOSTBYNAME_R -D_THREAD_SAFE -D_REENTRANT -DNOODBC -DWITH_STD_MALLOC -DFD_SETSIZE=4096 -DWITH_POLL -DWITH_NETFILTER
+CFLAGS = -g -O2 -fno-strict-aliasing -c -pthread -DWITHSPLICE -DGETHOSTBYNAME_R -D_THREAD_SAFE -D_REENTRANT -DNOODBC -DWITH_STD_MALLOC -DFD_SETSIZE=4096 -DWITH_POLL -DWITH_NETFILTER
 COUT = -o 
 LN = gcc
 DCFLAGS = -fpic
-LDFLAGS = -O2 -pthread
+LDFLAGS = -O2 -fno-strict-aliasing -pthread
 DLFLAGS = -shared
 DLSUFFICS = .ld.so
 # -lpthreads may be reuqired on some platforms instead of -pthreads
diff --git a/Makefile.Solaris-gcc b/Makefile.Solaris-gcc
index fa9a4cf..245943a 100644
--- a/Makefile.Solaris-gcc
+++ b/Makefile.Solaris-gcc
@@ -10,7 +10,7 @@
 
 BUILDDIR =
 CC = gcc
-CFLAGS = -O3 -c -D_SOLARIS -D_THREAD_SAFE -DGETHOSTBYNAME_R -D_REENTRANT -DNOODBC -DWITH_STD_MALLOC -DFD_SETSIZE=4096 -DWITH_POLL
+CFLAGS = -O2 -fno-strict-aliasing -c -D_SOLARIS -D_THREAD_SAFE -DGETHOSTBYNAME_R -D_REENTRANT -DNOODBC -DWITH_STD_MALLOC -DFD_SETSIZE=4096 -DWITH_POLL
 COUT = -o ./
 LN = gcc
 LDFLAGS = -O3
diff --git a/Makefile.llvm b/Makefile.llvm
index 6d3dcc8..f3b892e 100644
--- a/Makefile.llvm
+++ b/Makefile.llvm
@@ -10,10 +10,10 @@
 
 BUILDDIR = ../bin/
 CC = clang
-CFLAGS = -O2 -c -pthread -static -DWITH_STD_MALLOC -DNOIPV6
+CFLAGS = -O2 -fno-strict-aliasing -c -pthread -static -DWITH_STD_MALLOC -DNOIPV6
 COUT = -o 
 LN = clang
-LDFLAGS = -O2 -static -s
+LDFLAGS = -O2 -fno-strict-aliasing -static -s
 DLFLAGS = -shared
 DLSUFFICS = .dll
 LIBS = -lws2_32 -lodbc32 -ladvapi32
diff --git a/Makefile.unix b/Makefile.unix
index 287f8b9..68999be 100644
--- a/Makefile.unix
+++ b/Makefile.unix
@@ -11,10 +11,10 @@ BUILDDIR =
 CC = gcc
 
 # you may need -L/usr/pkg/lib for older NetBSD versions
-CFLAGS = -g -O2 -c -pthread -D_THREAD_SAFE -D_REENTRANT -DNOODBC -DWITH_STD_MALLOC -DFD_SETSIZE=4096 -DWITH_POLL
+CFLAGS = -g -O2 -fno-strict-aliasing -c -pthread -D_THREAD_SAFE -D_REENTRANT -DNOODBC -DWITH_STD_MALLOC -DFD_SETSIZE=4096 -DWITH_POLL
 COUT = -o 
 LN = gcc
-LDFLAGS = -O2 -pthread
+LDFLAGS = -O2 -fno-strict-aliasing -pthread
 # -lpthreads may be reuqired on some platforms instead of -pthreads
 # -ldl or -lld may be required for some platforms
 DCFLAGS = -fpic