[PATCH v6 1/4] make poll available for other platforms lacking it

["Joachim Schmitz" <jojo@schmitz-digital.de>]

move poll.[ch] out of compat/win32/ into compat/poll/ and adjust
Makefile with the changed paths. Adding comments to Makefile about how/when
to enable it and add logic for this

Signed-off-by: Joachim Schmitz <jojo@schmitz-digital.de>
---
 Makefile                      | 20 +++++++++++++++-----
 compat/{win32 => poll}/poll.c |  0
 compat/{win32 => poll}/poll.h |  0
 3 files changed, 15 insertions(+), 5 deletions(-)
 rename compat/{win32 => poll}/poll.c (100%)
 rename compat/{win32 => poll}/poll.h (100%)

diff --git a/Makefile b/Makefile
index ac49320..7893297 100644
--- a/Makefile
+++ b/Makefile
@@ -152,6 +152,11 @@ all::
 #
 # Define NO_MMAP if you want to avoid mmap.
 #
+# Define NO_SYS_POLL_H if you don't have sys/poll.h.
+#
+# Define NO_POLL if you do not have or don't want to use poll().
+# This also implies NO_SYS_POLL_H.
+#
 # Define NO_PTHREADS if you do not have or do not want to use Pthreads.
 #
 # Define NO_PREAD if you have a problem with pread() system call (e.g.
@@ -598,10 +603,10 @@ LIB_H += compat/bswap.h
 LIB_H += compat/cygwin.h
 LIB_H += compat/mingw.h
 LIB_H += compat/obstack.h
+LIB_H += compat/poll/poll.h
 LIB_H += compat/precompose_utf8.h
 LIB_H += compat/terminal.h
 LIB_H += compat/win32/dirent.h
-LIB_H += compat/win32/poll.h
 LIB_H += compat/win32/pthread.h
 LIB_H += compat/win32/syslog.h
 LIB_H += connected.h
@@ -1220,7 +1225,7 @@ ifeq ($(uname_S),Windows)
  NO_PREAD = YesPlease
  NEEDS_CRYPTO_WITH_SSL = YesPlease
  NO_LIBGEN_H = YesPlease
- NO_SYS_POLL_H = YesPlease
+ NO_POLL_H = YesPlease
  NO_SYMLINK_HEAD = YesPlease
  NO_IPV6 = YesPlease
  NO_UNIX_SOCKETS = YesPlease
@@ -1261,7 +1266,7 @@ ifeq ($(uname_S),Windows)
  BASIC_CFLAGS 
= -nologo -I. -I../zlib -Icompat/vcbuild -Icompat/vcbuild/include -DWIN32 -D_CONSOLE 
 -DHAVE_STRING_H
-D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_DEPRECATE
  COMPAT_OBJS = compat/msvc.o compat/winansi.o \
   compat/win32/pthread.o compat/win32/syslog.o \
-  compat/win32/poll.o compat/win32/dirent.o
+  compat/win32/dirent.o
  COMPAT_CFLAGS 
= -D__USE_MINGW_ACCESS -DNOGDI -DHAVE_STRING_H -DHAVE_ALLOCA_H -Icompat -Icompat/regex 
 -Icompat/win32
-DSTRIP_EXTENSION=\".exe\"
  BASIC_LDFLAGS 
= -IGNORE:4217 -IGNORE:4049 -NOLOGO -SUBSYSTEM:CONSOLE -NODEFAULTLIB:MSVCRT.lib
  EXTLIBS = user32.lib advapi32.lib shell32.lib wininet.lib ws2_32.lib
@@ -1316,7 +1321,7 @@ ifneq (,$(findstring MINGW,$(uname_S)))
  NO_PREAD = YesPlease
  NEEDS_CRYPTO_WITH_SSL = YesPlease
  NO_LIBGEN_H = YesPlease
- NO_SYS_POLL_H = YesPlease
+ NO_POLL_H = YesPlease
  NO_SYMLINK_HEAD = YesPlease
  NO_UNIX_SOCKETS = YesPlease
  NO_SETENV = YesPlease
@@ -1351,7 +1356,7 @@ ifneq (,$(findstring MINGW,$(uname_S)))
  COMPAT_CFLAGS += -DSTRIP_EXTENSION=\".exe\"
  COMPAT_OBJS += compat/mingw.o compat/winansi.o \
   compat/win32/pthread.o compat/win32/syslog.o \
-  compat/win32/poll.o compat/win32/dirent.o
+  compat/win32/dirent.o
  EXTLIBS += -lws2_32
  PTHREAD_LIBS =
  X = .exe
@@ -1605,6 +1610,11 @@ ifdef NO_GETTEXT
  BASIC_CFLAGS += -DNO_GETTEXT
  USE_GETTEXT_SCHEME ?= fallthrough
 endif
+ifdef NO_POLL
+ NO_SYS_POLL_H = YesPlease
+ COMPAT_CFLAGS += -DNO_POLL -Icompat/poll
+ COMPAT_OBJS += compat/poll/poll.o
+endif
 ifdef NO_STRCASESTR
  COMPAT_CFLAGS += -DNO_STRCASESTR
  COMPAT_OBJS += compat/strcasestr.o
diff --git a/compat/win32/poll.c b/compat/poll/poll.c
similarity index 100%
rename from compat/win32/poll.c
rename to compat/poll/poll.c
diff --git a/compat/win32/poll.h b/compat/poll/poll.h
similarity index 100%
rename from compat/win32/poll.h
rename to compat/poll/poll.h
-- 
1.7.12