Fix CFLAGS selection to actually work. Add test to detect whether gcc's

option -fno-strict-aliasing is available.

src/template/aix

@@ -1,7 +1,7 @@
 if test "$GCC" != yes ; then
   case $host_os in
     aix3.2.5 | aix4.1*) ;;
-    *) CFLAGS="$CFLAGS -O2 -qlonglong";;
+    *) CFLAGS="-O2 -qlonglong";;
   esac
-  CFLAGS="$CFLAGS -qmaxmem=16384 -qsrcmsg"
+  CFLAGS="-O -qmaxmem=16384 -qsrcmsg"
 fi

src/template/bsdi

@@ -1,7 +1,3 @@
-case $host_cpu in
-  i?86)  CFLAGS="$CFLAGS -m486";;
-esac
-
 case $host_os in
   bsdi2.0 | bsdi2.1 | bsdi3*) CC=gcc2;;
 esac

src/template/freebsd

@@ -1,5 +1,5 @@
 case $host_cpu in
-  alpha*)   CFLAGS="$CFLAGS -O";;  # alpha has problems with -O2
+  alpha*)   CFLAGS="-O";;  # alpha has problems with -O2
 esac
 
 THREAD_SUPPORT=yes

src/template/hpux

@@ -2,5 +2,5 @@ CPPFLAGS="-D_XOPEN_SOURCE_EXTENDED"
 
 if test "$GCC" != yes ; then
   CC="$CC -Ae"
-  CFLAGS="$CFLAGS +O2"
+  CFLAGS="+O2"
 fi

src/template/osf

@@ -1,6 +1,6 @@
 if test "$GCC" != yes ; then
   CC="$CC -std"
-  CFLAGS="$CFLAGS -O4 -Olimit 2000"
+  CFLAGS="-O4 -Olimit 2000"
 fi
 
 THREAD_SUPPORT=yes

src/template/qnx4

@@ -1,2 +1 @@
-CFLAGS="$CFLAGS -I/usr/local/include"
 LIBS="-lunix"

src/template/solaris

@@ -1,9 +1,8 @@
 if test "$GCC" != yes ; then
   CC="$CC -Xa"			# relaxed ISO C mode
-  CFLAGS="$CFLAGS -O -v"	# -v is like gcc -Wall
+  CFLAGS="-O -v"		# -v is like gcc -Wall
 fi
 
 THREAD_SUPPORT=yes
 NEED_REENTRANT_FUNCS=yes	# 5.6 2003-09-13
 THREAD_LIBS="-pthread"
-

src/template/univel

@@ -1,2 +1,2 @@
-CFLAGS="$CFLAGS -v -O -K i486,host,inline,loop_unroll -Dsvr4"
+CFLAGS="-v -O -K i486,host,inline,loop_unroll -Dsvr4"
 LIBS="-lc89"

src/template/unixware

@@ -4,7 +4,7 @@ else
 # the -Kno_host is temporary for a bug in the compiler.  See -hackers
 # discussion on 7-8/Aug/2003.
 # when the 7.1.3UP3 or later compiler is out, we can do a version check.
-  CFLAGS="$CFLAGS -O -Kinline,no_host"
+  CFLAGS="-O -Kinline,no_host"
   THREAD_CPPFLAGS="-K pthread"
 fi