Unconditionally define:

-D_REENTRANT -D_THREAD_SAFE -D_POSIX_PTHREAD_SEMANTICS

for all ports.  It can't hurt if they are not supported, but it makes
our job easier for porting.

Should fix Darwin compile and other platforms without mucking with the
thread detection code.

src/template/darwin

@@ -4,6 +4,3 @@ CC="$CC -no-cpp-precomp"
 
 # Select appropriate semaphore support
 USE_NAMED_POSIX_SEMAPHORES=1
-
-# verified Mac OS X 10.3.3, Darwin Kernel Version 7.3.0, 2004-04-07
-PTHREAD_CFLAGS="-D_REENTRANT -D_THREAD_SAFE -D_POSIX_PTHREAD_SEMANTICS"

src/template/freebsd

@@ -1,8 +1,3 @@
 case $host_cpu in
   alpha*)   CFLAGS="-O";;  # alpha has problems with -O2
 esac
-
-case $host_os in
-	freebsd2*|freebsd3*|freebsd4*) ;;
-	*) PTHREAD_LIBS="c_r";;	 # do we need this?  2004-04-23
-esac

src/template/linux

@@ -1,5 +1,2 @@
 # Force _GNU_SOURCE on; plperl is broken with Perl 5.8.0 otherwise
 CPPFLAGS="-D_GNU_SOURCE"
-
-# tools/thread/thread_test must be run
-PTHREAD_CFLAGS="-D_REENTRANT -D_THREAD_SAFE -D_POSIX_PTHREAD_SEMANTICS"

src/template/solaris

@@ -10,4 +10,3 @@ case $host in
 esac
 
 # -D_POSIX_PTHREAD_SEMANTICS enables 5-arg getpwuid_r, among other things
-PTHREAD_CFLAGS="-D_REENTRANT -D_POSIX_PTHREAD_SEMANTICS"

src/template/unixware

@@ -24,8 +24,5 @@ __EOF__
   PTHREAD_CFLAGS="-Kpthread"
 fi
 
-# tools/thread/thread_test must be run
-PTHREAD_CFLAGS="$PTHREAD_CFLAGS -D_REENTRANT"
-
 # Disabled because flags are required for all apps using libpq.
 # Waiting to see if other platforms need this too.  2004-03-22