configure: Set WIN32_LEAN_AND_MEAN at configure time

Including winsock2.h or windows.h without WIN32_LEAN_AND_MEAN cause
bzlib.h to parse as nonsense, due to an instance of #define char small
in rpcndr.h.

See:

https://stackoverflow.com/a/27794577

Signed-off-by: L. E. Segovia <amy@amyspark.me>
Signed-off-by: Martin Storsjö <martin@martin.st>

compat/atomics/win32/stdatomic.h

@@ -19,7 +19,6 @@
 #ifndef COMPAT_ATOMICS_WIN32_STDATOMIC_H
 #define COMPAT_ATOMICS_WIN32_STDATOMIC_H
 
-#define WIN32_LEAN_AND_MEAN
 #include <stddef.h>
 #include <stdint.h>
 #include <windows.h>

compat/w32pthreads.h

@@ -35,7 +35,6 @@
  * As most functions here are used without checking return values,
  * only implement return values as necessary. */
 
-#define WIN32_LEAN_AND_MEAN
 #include <windows.h>
 #include <process.h>
 #include <time.h>

configure

@@ -5666,6 +5666,7 @@ case $target_os in
         fi
         ! enabled small && test_cmd $windres --version && enable gnu_windres
         enabled x86_32 && check_ldflags -Wl,--large-address-aware
+        add_cppflags -DWIN32_LEAN_AND_MEAN
         shlibdir_default="$bindir_default"
         SLIBPREF=""
         SLIBSUF=".dll"
@@ -5716,6 +5717,7 @@ case $target_os in
         fi
         ! enabled small && test_cmd $windres --version && enable gnu_windres
         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
+        add_cppflags -DWIN32_LEAN_AND_MEAN
         shlibdir_default="$bindir_default"
         SLIBPREF=""
         SLIBSUF=".dll"
@@ -5745,6 +5747,7 @@ case $target_os in
         enabled x86_64 && objformat="win64" || objformat="win32"
         enable dos_paths
         ! enabled small && test_cmd $windres --version && enable gnu_windres
+        add_cppflags -DWIN32_LEAN_AND_MEAN
         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
         ;;
     *-dos|freedos|opendos)

libavdevice/dshow_capture.h

@@ -27,7 +27,6 @@
 #include "avdevice.h"
 
 #define COBJMACROS
-#define WIN32_LEAN_AND_MEAN
 #include <windows.h>
 #define NO_DSHOW_STRSAFE
 #include <dshow.h>

libavdevice/opengl_enc.c

@@ -30,7 +30,6 @@
 #include "config.h"
 
 #if HAVE_WINDOWS_H
-#define WIN32_LEAN_AND_MEAN
 #include <windows.h>
 #endif
 #if HAVE_OPENGL_GL3_H

libavfilter/vsrc_ddagrab.c

@@ -22,7 +22,6 @@
 #undef _WIN32_WINNT
 #define _WIN32_WINNT 0x0A00
 #endif
-#define WIN32_LEAN_AND_MEAN
 
 #include <windows.h>
 

libavformat/os_support.c

@@ -34,11 +34,9 @@
 #if HAVE_SYS_TIME_H
 #include <sys/time.h>
 #endif /* HAVE_SYS_TIME_H */
-#if HAVE_WINSOCK2_H
-#include <winsock2.h>
-#elif HAVE_SYS_SELECT_H
+#if HAVE_SYS_SELECT_H
 #include <sys/select.h>
-#endif /* HAVE_WINSOCK2_H */
+#endif /* HAVE_SYS_SELECT_H */
 #endif /* !HAVE_POLL_H */
 
 #include "network.h"

libavutil/wchar_filename.h

@@ -21,7 +21,6 @@
 
 #ifdef _WIN32
 
-#define WIN32_LEAN_AND_MEAN
 #include <windows.h>
 #include "mem.h"
 

libswscale/utils.c

@@ -34,7 +34,6 @@
 #endif
 #endif
 #if HAVE_VIRTUALALLOC
-#define WIN32_LEAN_AND_MEAN
 #include <windows.h>
 #endif