Remove symbol WIN32_ONLY_COMPILER

This used to mean "Visual C++ except in those parts where Borland C++
was supported where it meant one of those". Now that we don't support
Borland C++ anymore, simplify by using _MSC_VER which is the normal way
to detect Visual C++.

src/backend/libpq/auth.c

@@ -958,7 +958,7 @@ CheckSCRAMAuth(Port *port, char *shadow_pass, char **logdetail)
  */
 #ifdef ENABLE_GSS
 
-#if defined(WIN32) && !defined(WIN32_ONLY_COMPILER)
+#if defined(WIN32) && !defined(_MSC_VER)
 /*
  * MIT Kerberos GSSAPI DLL doesn't properly export the symbols for MingW
  * that contain the OIDs required. Redefine here, values copied

src/backend/libpq/pqcomm.c

@@ -85,7 +85,7 @@
 #ifdef HAVE_UTIME_H
 #include <utime.h>
 #endif
-#ifdef WIN32_ONLY_COMPILER		/* mstcpip.h is missing on mingw */
+#ifdef _MSC_VER		/* mstcpip.h is missing on mingw */
 #include <mstcpip.h>
 #endif
 

src/backend/port/win32/mingwcompat.c

@@ -13,7 +13,7 @@
 
 #include "postgres.h"
 
-#ifndef WIN32_ONLY_COMPILER
+#ifndef _MSC_VER
 /*
  * MingW defines an extern to this struct, but the actual struct isn't present
  * in any library. It's trivial enough that we can safely define it

src/common/exec.c

@@ -35,7 +35,7 @@
 #define log_error4(str, param, arg1)	(fprintf(stderr, str, param, arg1), fputc('\n', stderr))
 #endif
 
-#ifdef WIN32_ONLY_COMPILER
+#ifdef _MSC_VER
 #define getcwd(cwd,len)  GetCurrentDirectory(len, cwd)
 #endif
 

src/include/getaddrinfo.h

@@ -40,7 +40,7 @@
 #define EAI_MEMORY		(-10)
 #define EAI_SYSTEM		(-11)
 #else							/* WIN32 */
-#ifdef WIN32_ONLY_COMPILER
+#ifdef _MSC_VER
 #ifndef WSA_NOT_ENOUGH_MEMORY
 #define WSA_NOT_ENOUGH_MEMORY	(WSAENOBUFS)
 #endif

src/include/libpq/libpq-be.h

@@ -38,14 +38,14 @@
  * that doesn't match the msvc build. It gives a bunch of compiler warnings that we ignore,
  * but also defines a symbol that simply does not exist. Undefine it again.
  */
-#ifdef WIN32_ONLY_COMPILER
+#ifdef _MSC_VER
 #undef HAVE_GETADDRINFO
 #endif
 #endif   /* ENABLE_GSS */
 
 #ifdef ENABLE_SSPI
 #define SECURITY_WIN32
-#if defined(WIN32) && !defined(WIN32_ONLY_COMPILER)
+#if defined(WIN32) && !defined(_MSC_VER)
 #include <ntsecapi.h>
 #endif
 #include <security.h>

src/include/port.h

@@ -231,7 +231,7 @@ extern int	pgrename(const char *from, const char *to);
 extern int	pgunlink(const char *path);
 
 /* Include this first so later includes don't see these defines */
-#ifdef WIN32_ONLY_COMPILER
+#ifdef _MSC_VER
 #include <io.h>
 #endif
 

src/include/port/atomics.h

@@ -96,7 +96,7 @@
 /* gcc or compatible, including clang and icc */
 #elif defined(__GNUC__) || defined(__INTEL_COMPILER)
 #include "port/atomics/generic-gcc.h"
-#elif defined(WIN32_ONLY_COMPILER)
+#elif defined(_MSC_VER)
 #include "port/atomics/generic-msvc.h"
 #elif defined(__hpux) && defined(__ia64) && !defined(__GNUC__)
 #include "port/atomics/generic-acc.h"

src/include/port/atomics/arch-x86.h

@@ -113,14 +113,14 @@ pg_spin_delay_impl(void)
 {
 	__asm__ __volatile__(" rep; nop			\n");
 }
-#elif defined(WIN32_ONLY_COMPILER) && defined(__x86_64__)
+#elif defined(_MSC_VER) && defined(__x86_64__)
 #define PG_HAVE_SPIN_DELAY
 static __forceinline void
 pg_spin_delay_impl(void)
 {
 	_mm_pause();
 }
-#elif defined(WIN32_ONLY_COMPILER)
+#elif defined(_MSC_VER)
 #define PG_HAVE_SPIN_DELAY
 static __forceinline void
 pg_spin_delay_impl(void)

src/include/port/win32.h

 /* src/include/port/win32.h */
 
-#if defined(_MSC_VER)
-#define WIN32_ONLY_COMPILER
-#endif
-
 /*
  * Make sure _WIN32_WINNT has the minimum required value.
  * Leave a higher value in place. When building with at least Visual
@@ -43,7 +39,7 @@
  * The Mingw64 headers choke if this is already defined - they
  * define it themselves.
  */
-#if !defined(__MINGW64_VERSION_MAJOR) || defined(WIN32_ONLY_COMPILER)
+#if !defined(__MINGW64_VERSION_MAJOR) || defined(_MSC_VER)
 #define _WINSOCKAPI_
 #endif
 #include <winsock2.h>
@@ -233,7 +229,7 @@ int			setitimer(int which, const struct itimerval * value, struct itimerval * ov
  * with 64-bit offsets.
  */
 #define pgoff_t __int64
-#ifdef WIN32_ONLY_COMPILER
+#ifdef _MSC_VER
 #define fseeko(stream, offset, origin) _fseeki64(stream, offset, origin)
 #define ftello(stream) _ftelli64(stream)
 #else
@@ -256,7 +252,7 @@ typedef int gid_t;
 #endif
 typedef long key_t;
 
-#ifdef WIN32_ONLY_COMPILER
+#ifdef _MSC_VER
 typedef int pid_t;
 #endif
 
@@ -416,7 +412,7 @@ extern int	pgwin32_is_admin(void);
 #define unsetenv(x) pgwin32_unsetenv(x)
 
 /* Things that exist in MingW headers, but need to be added to MSVC */
-#ifdef WIN32_ONLY_COMPILER
+#ifdef _MSC_VER
 
 #ifndef _WIN64
 typedef long ssize_t;
@@ -446,7 +442,7 @@ typedef unsigned short mode_t;
 /* Pulled from Makefile.port in mingw */
 #define DLSUFFIX ".dll"
 
-#endif   /* WIN32_ONLY_COMPILER */
+#endif   /* _MSC_VER */
 
 /* These aren't provided by either MingW or MSVC */
 #define S_IRGRP 0

src/include/storage/s_lock.h

@@ -833,7 +833,7 @@ extern slock_t pg_atomic_cas(volatile slock_t *lock, slock_t with,
 #endif
 
 
-#ifdef WIN32_ONLY_COMPILER
+#ifdef _MSC_VER
 typedef LONG slock_t;
 
 #define HAS_TEST_AND_SET

src/interfaces/ecpg/test/expected/thread-thread.c

@@ -152,7 +152,7 @@ void *test_thread(void *arg)
 
 
   /* build up connection name, and connect to database */
-#ifndef WIN32_ONLY_COMPILER
+#ifndef _MSC_VER
   snprintf(l_connection, sizeof(l_connection), "thread_%03ld", threadnum);
 #else
   _snprintf(l_connection, sizeof(l_connection), "thread_%03ld", threadnum);

src/interfaces/ecpg/test/expected/thread-thread_implicit.c

@@ -153,7 +153,7 @@ void *test_thread(void *arg)
 
 
   /* build up connection name, and connect to database */
-#ifndef WIN32_ONLY_COMPILER
+#ifndef _MSC_VER
   snprintf(l_connection, sizeof(l_connection), "thread_%03ld", threadnum);
 #else
   _snprintf(l_connection, sizeof(l_connection), "thread_%03ld", threadnum);

src/interfaces/ecpg/test/thread/thread.pgc

@@ -103,7 +103,7 @@ void *test_thread(void *arg)
   EXEC SQL END DECLARE SECTION;
 
   /* build up connection name, and connect to database */
-#ifndef WIN32_ONLY_COMPILER
+#ifndef _MSC_VER
   snprintf(l_connection, sizeof(l_connection), "thread_%03ld", threadnum);
 #else
   _snprintf(l_connection, sizeof(l_connection), "thread_%03ld", threadnum);

src/interfaces/ecpg/test/thread/thread_implicit.pgc

@@ -104,7 +104,7 @@ void *test_thread(void *arg)
   EXEC SQL END DECLARE SECTION;
 
   /* build up connection name, and connect to database */
-#ifndef WIN32_ONLY_COMPILER
+#ifndef _MSC_VER
   snprintf(l_connection, sizeof(l_connection), "thread_%03ld", threadnum);
 #else
   _snprintf(l_connection, sizeof(l_connection), "thread_%03ld", threadnum);

src/interfaces/libpq/fe-auth.c

@@ -49,7 +49,7 @@
  * GSSAPI authentication system.
  */
 
-#if defined(WIN32) && !defined(WIN32_ONLY_COMPILER)
+#if defined(WIN32) && !defined(_MSC_VER)
 /*
  * MIT Kerberos GSSAPI DLL doesn't properly export the symbols for MingW
  * that contain the OIDs required. Redefine here, values copied

src/interfaces/libpq/fe-connect.c

@@ -37,7 +37,7 @@
 #endif
 #define near
 #include <shlobj.h>
-#ifdef WIN32_ONLY_COMPILER		/* mstcpip.h is missing on mingw */
+#ifdef _MSC_VER		/* mstcpip.h is missing on mingw */
 #include <mstcpip.h>
 #endif
 #else

src/interfaces/libpq/libpq-int.h

@@ -53,7 +53,7 @@
 
 #ifdef ENABLE_SSPI
 #define SECURITY_WIN32
-#if defined(WIN32) && !defined(WIN32_ONLY_COMPILER)
+#if defined(WIN32) && !defined(_MSC_VER)
 #include <ntsecapi.h>
 #endif
 #include <security.h>

src/tools/msvc/ecpg_regression.proj

@@ -51,7 +51,7 @@
 
   <!-- Run ECPG and the Visual C++ compiler on the files. Don't bother with dependency check between the steps -->
   <Exec WorkingDirectory="%(Pgc.RelativeDir)" Command="$(OUTDIR)ecpg\ecpg -I ../../include --regression $(ECPGPARAM) -o %(Pgc.Filename).c %(Pgc.Filename).pgc" />
-  <Exec WorkingDirectorY="%(Pgc.RelativeDir)" Command="cl /nologo %(Pgc.FileName).c /TC /MD$(DEBUGLIB) /DENABLE_THREAD_SAFETY /DWIN32 /DWIN32_ONLY_COMPILER /I. /I..\..\include /I..\..\..\libpq /I..\..\..\..\include /link /defaultlib:$(OUTDIR)libecpg\libecpg.lib /defaultlib:$(OUTDIR)libecpg_compat\libecpg_compat.lib /defaultlib:$(OUTDIR)libpgtypes\libpgtypes.lib" />
+  <Exec WorkingDirectorY="%(Pgc.RelativeDir)" Command="cl /nologo %(Pgc.FileName).c /TC /MD$(DEBUGLIB) /DENABLE_THREAD_SAFETY /DWIN32 /D_MSC_VER /I. /I..\..\include /I..\..\..\libpq /I..\..\..\..\include /link /defaultlib:$(OUTDIR)libecpg\libecpg.lib /defaultlib:$(OUTDIR)libecpg_compat\libecpg_compat.lib /defaultlib:$(OUTDIR)libpgtypes\libpgtypes.lib" />
  </Target>
 
  <!-- Clean up all output files -->