Cygwin: Use automake (v5)

v2:
* Include tzmap.h in BUILT_SOURCES
* Make per-file flags appear after user-supplied CXXFLAGS, so they can
override optimization level.
* Correct .o files used to define symbols exported by libm.a
* Drop gcrt0.o mistakenly included in libgmon.a
* Add missing line continuations in GMON_FILES value

v3:
* use per-file flags for .c compilation
* override C{XX,}FLAGS, as they are set on the command line by top-level make

v4:
* Drop -Wno-error=write-strings from path_testsuite CXXFLAGS

v5:
* Update for changes in master
- Add -fno-threadsafe-statics to CXX flags
- Add hypotl.cc
- Remove fenv.cc (in favour of newlib), add fenv.c stub
- Add proc.5 manpage rules

1 files changed, 15 insertions, 0 deletions

diff --git a/winsup/Makefile.am.common b/winsup/Makefile.am.common
new file mode 100644
index 000000000..884194df2
--- /dev/null
+++ b/winsup/Makefile.am.common
@@ -0,0 +1,15 @@
+# Makefile.am.common - common definitions for the winsup directory
+#
+# This file is part of Cygwin.
+#
+# This software is a copyrighted work licensed under the terms of the
+# Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
+# details.
+
+flags_common=-Wall -Wstrict-aliasing -Wwrite-strings -fno-common -pipe -fbuiltin -fmessage-length=0
+
+# compiler flags commonly used (but not for MinGW compilation, because they
+# include the Cygwin header paths via @INCLUDES@)
+
+cxxflags_common=$(INCLUDES) -fno-rtti -fno-exceptions -fno-use-cxa-atexit $(flags_common)
+cflags_common=$(INCLUDES) $(flags_common)