Cygwin: automake: fix warning in terms of the `ps' target

We are building a ps executable, but the rule to build the target
collides with an auto-generated, documentation-related `ps' rule.

Work around that by naming the executable "cygps" at build time
and use a transform rule to rename it at installation time.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>

winsup/utils/Makefile.am

@@ -12,9 +12,12 @@ CFLAGS_COMMON=-Wimplicit-fallthrough=4 -Werror
 AM_CFLAGS=$(cflags_common) $(CFLAGS_COMMON)
 AM_CXXFLAGS=$(cxxflags_common) $(CFLAGS_COMMON)
 
+# Note that we call ps cygps here, so as not to collide with the
+# autogenerated texinfo rule with the name 'ps'...
 bin_PROGRAMS = \
 	chattr \
 	cygpath \
+	cygps \
 	gencat \
 	getconf \
 	getfacl \
@@ -28,7 +31,6 @@ bin_PROGRAMS = \
 	mount \
 	passwd \
 	pldd \
-	ps \
 	regtool \
 	setfacl \
 	setmetamode \
@@ -36,6 +38,9 @@ bin_PROGRAMS = \
 	tzset \
 	umount
 
+# Rename cygps to ps at install time
+transform = s/cygps/ps/; $(program_transform_name)
+
 # dumper is only built if libbfd.a available
 if BUILD_DUMPER
 bin_PROGRAMS += dumper
@@ -49,7 +54,7 @@ ldd_SOURCES = ldd.cc
 locale_SOURCES = locale.cc
 minidumper_SOURCES = minidumper.cc
 mount_SOURCES = mount.cc path.cc
-ps_SOURCES = ps.cc
+cygps_SOURCES = ps.cc
 regtool_SOURCES = regtool.cc
 umount_SOURCES = umount.cc
 
@@ -74,7 +79,7 @@ ldd_LDADD = $(LDADD) -lpsapi -lntdll
 mount_CXXFLAGS = -DFSTAB_ONLY $(AM_CXXFLAGS)
 minidumper_LDADD = $(LDADD) -ldbghelp
 pldd_LDADD = $(LDADD) -lpsapi
-ps_LDADD = $(LDADD) -lpsapi -lntdll
+cygps_LDADD = $(LDADD) -lpsapi -lntdll
 
 if CROSS_BOOTSTRAP
 SUBDIRS = mingw