# HG changeset patch
# User Michael Goffioul <michael.goffioul@gmail.com>
# Date 1372126213 14400
# Node ID 3663f6300abf8edc07a9d6fe6a1df0c294989af3
# Parent  9b848bfe6f10f6d865225a2d4e9846ef275b2770
[MSVC] enable FFTW compilation

- fix cc-msvc when all input files are pushed into @-files by libtool
- make libtool think clgfortran is not the GNU Fortran compiler
- don't bother compiling long-double version of FFTW, MSVC does not support
  long double type, it's typedef'ed to double

diff -r 9b848bfe6f10 -r 3663f6300abf Makefile.in
--- a/Makefile.in	Mon Jun 24 13:28:33 2013 -0400
+++ b/Makefile.in	Mon Jun 24 22:10:13 2013 -0400
@@ -166,9 +166,13 @@
     MXE_WINDRES := windres
     MXE_PKG_CONFIG := pkg-config
     MXE_QMAKE := qmake
+    # Although the Fortran compiler is internally gfortran, we still
+    # want to make it look like non-GNU compiler, otherwise libtool is
+    # not playing nicely and trips over different variable values for
+    # different configuration tags.
     HOST_AND_BUILD_CONFIGURE_OPTIONS := \
 	    CC='$(MXE_CC)' CXX='$(MXE_CXX)' F77='$(MXE_F77)' DLLTOOL='$(MXE_DLLTOOL)' CCAS='gcc' \
-	    CFLAGS='-O2' CXXFLAGS='-O2'
+	    CFLAGS='-O2' CXXFLAGS='-O2' ac_cv_f77_compiler_gnu=no
   else
     MXE_AR := ar
     MXE_RANLIB := ranlib
diff -r 9b848bfe6f10 -r 3663f6300abf src/build-msvctools/cc-msvc.cc
--- a/src/build-msvctools/cc-msvc.cc	Mon Jun 24 13:28:33 2013 -0400
+++ b/src/build-msvctools/cc-msvc.cc	Mon Jun 24 22:10:13 2013 -0400
@@ -769,6 +769,16 @@
 		clopt += (" " + sourcefile);
 	}
 
+	if (exeoutput && sourcefile.empty())
+	{
+		// It's possible all object files and libraries have been
+		// pushed into @-files, so "prog" would still be set to "cl".
+		// If there's no source file specified on the command line,
+		// it's probably safe to assume we're calling the linker.
+
+		prog = "link";
+	}
+
 	if (!exeoutput && !sourcefile.empty() && objectfile.empty())
 	{
 		// use .o suffix by default
@@ -793,6 +803,17 @@
                 linkopt += " -out:" + exefile;
         }
 
+	if (exeoutput &&
+            (ends_with(exefile, ".dll") || ends_with(exefile, ".DLL"))
+            && ! doshared)
+	{
+		// Maybe "-shared" was missing on the command line.
+		// Compensate for it!
+
+		clopt += " -LD";
+		linkopt += " -DLL";
+	}
+
 	if (exeoutput && default_libs)
 	{
 		cllinkopt += " dirent.lib msvcmath.lib shell32.lib advapi32.lib user32.lib kernel32.lib";
diff -r 9b848bfe6f10 -r 3663f6300abf src/fftw.mk
--- a/src/fftw.mk	Mon Jun 24 13:28:33 2013 -0400
+++ b/src/fftw.mk	Mon Jun 24 22:10:13 2013 -0400
@@ -9,6 +9,12 @@
 $(PKG)_URL      := http://www.fftw.org/$($(PKG)_FILE)
 $(PKG)_DEPS     :=
 
+ifeq ($(MXE_SYSTEM),msvc)
+    $(PKG)_HAVE_LONG_DOUBLE := false
+else
+    $(PKG)_HAVE_LONG_DOUBLE := true
+endif
+
 define $(PKG)_UPDATE
     $(WGET) -q -O- 'http://www.fftw.org/download.html' | \
     $(SED) -n 's,.*fftw-\([0-9][^>]*\)\.tar.*,\1,p' | \
@@ -24,27 +30,32 @@
         $(ENABLE_SHARED_OR_STATIC) \
         --prefix='$(HOST_PREFIX)' \
         --enable-threads \
-        --enable-double
+        --enable-sse2 \
+        --enable-double && $(CONFIGURE_POST_HOOK)
     $(MAKE) -C '$(1)' -j '$(JOBS)' bin_PROGRAMS= sbin_PROGRAMS= noinst_PROGRAMS=
     $(MAKE) -C '$(1)' -j 1 install bin_PROGRAMS= sbin_PROGRAMS= noinst_PROGRAMS=
 
+    if $($(PKG)_HAVE_LONG_DOUBLE); then \
+        cd '$(1)' && ./configure \
+            F77=$(MXE_F77) \
+            $(HOST_AND_BUILD_CONFIGURE_OPTIONS) \
+            $(ENABLE_SHARED_OR_STATIC) \
+            --prefix='$(HOST_PREFIX)' \
+            --enable-threads \
+            --enable-sse2 \
+            --enable-long-double && $(CONFIGURE_POST_HOOK) ; \
+        $(MAKE) -C '$(1)' -j '$(JOBS)' bin_PROGRAMS= sbin_PROGRAMS= noinst_PROGRAMS= ; \
+        $(MAKE) -C '$(1)' -j 1 install bin_PROGRAMS= sbin_PROGRAMS= noinst_PROGRAMS= ; \
+    fi
+
     cd '$(1)' && ./configure \
         F77=$(MXE_F77) \
         $(HOST_AND_BUILD_CONFIGURE_OPTIONS) \
         $(ENABLE_SHARED_OR_STATIC) \
         --prefix='$(HOST_PREFIX)' \
         --enable-threads \
-        --enable-long-double
-    $(MAKE) -C '$(1)' -j '$(JOBS)' bin_PROGRAMS= sbin_PROGRAMS= noinst_PROGRAMS=
-    $(MAKE) -C '$(1)' -j 1 install bin_PROGRAMS= sbin_PROGRAMS= noinst_PROGRAMS=
-
-    cd '$(1)' && ./configure \
-        F77=$(MXE_F77) \
-        $(HOST_AND_BUILD_CONFIGURE_OPTIONS) \
-        $(ENABLE_SHARED_OR_STATIC) \
-        --prefix='$(HOST_PREFIX)' \
-        --enable-threads \
-        --enable-float
+        --enable-sse2 \
+        --enable-float && $(CONFIGURE_POST_HOOK)
     $(MAKE) -C '$(1)' -j '$(JOBS)' bin_PROGRAMS= sbin_PROGRAMS= noinst_PROGRAMS=
     $(MAKE) -C '$(1)' -j 1 install bin_PROGRAMS= sbin_PROGRAMS= noinst_PROGRAMS=
 endef
diff -r 9b848bfe6f10 -r 3663f6300abf src/msvc-fftw-1.patch
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/msvc-fftw-1.patch	Mon Jun 24 22:10:13 2013 -0400
@@ -0,0 +1,110 @@
+diff -ur fftw-3.3.2-orig/api/fftw3.h fftw-3.3.2/api/fftw3.h
+--- fftw-3.3.2-orig/api/fftw3.h	2012-04-28 10:58:06 -0400
++++ fftw-3.3.2/api/fftw3.h	2013-06-24 17:32:40 -0400
+@@ -82,8 +82,14 @@
+ #  else /* user is calling FFTW; import symbol */
+ #    define FFTW_EXTERN extern __declspec(dllimport) 
+ #  endif
++#  if defined(COMPILING_FFTW_THREADS)
++#    define FFTW_THREADS_EXTERN extern __declspec(dllexport)
++#  else
++#    define FFTW_THREADS_EXTERN extern __declspec(dllimport)
++#  endif
+ #else
+ #  define FFTW_EXTERN extern
++#  define FFTW_THREADS_EXTERN extern
+ #endif
+ 
+ enum fftw_r2r_kind_do_not_use_me {
+@@ -315,9 +321,9 @@
+ 									   \
+ FFTW_EXTERN void X(set_timelimit)(double t);				   \
+ 									   \
+-FFTW_EXTERN void X(plan_with_nthreads)(int nthreads);			   \
+-FFTW_EXTERN int X(init_threads)(void);					   \
+-FFTW_EXTERN void X(cleanup_threads)(void);				   \
++FFTW_THREADS_EXTERN void X(plan_with_nthreads)(int nthreads);		   \
++FFTW_THREADS_EXTERN int X(init_threads)(void);				   \
++FFTW_THREADS_EXTERN void X(cleanup_threads)(void);			   \
+ 									   \
+ FFTW_EXTERN int X(export_wisdom_to_filename)(const char *filename);	   \
+ FFTW_EXTERN void X(export_wisdom_to_file)(FILE *output_file);		   \
+diff -ur fftw-3.3.2-orig/dft/ct.h fftw-3.3.2/dft/ct.h
+--- fftw-3.3.2-orig/dft/ct.h	2012-04-28 10:58:06 -0400
++++ fftw-3.3.2/dft/ct.h	2013-06-24 15:28:17 -0400
+@@ -56,7 +56,7 @@
+ ct_solver *X(mksolver_ct)(size_t size, INT r, int dec, 
+ 			  ct_mkinferior mkcldw, 
+ 			  ct_force_vrecursion force_vrecursionp);
+-extern ct_solver *(*X(mksolver_ct_hook))(size_t, INT, int, 
++IFFTW_EXTERN ct_solver *(*X(mksolver_ct_hook))(size_t, INT, int, 
+ 					 ct_mkinferior, ct_force_vrecursion);
+ 
+ void X(regsolver_ct_directw)(planner *plnr,
+diff -ur fftw-3.3.2-orig/rdft/hc2hc.h fftw-3.3.2/rdft/hc2hc.h
+--- fftw-3.3.2-orig/rdft/hc2hc.h	2012-04-28 10:58:06 -0400
++++ fftw-3.3.2/rdft/hc2hc.h	2013-06-24 15:28:36 -0400
+@@ -46,7 +46,7 @@
+ };
+ 
+ hc2hc_solver *X(mksolver_hc2hc)(size_t size, INT r, hc2hc_mkinferior mkcldw);
+-extern hc2hc_solver *(*X(mksolver_hc2hc_hook))(size_t, INT, hc2hc_mkinferior);
++IFFTW_EXTERN hc2hc_solver *(*X(mksolver_hc2hc_hook))(size_t, INT, hc2hc_mkinferior);
+ 
+ void X(regsolver_hc2hc_direct)(planner *plnr, khc2hc codelet, 
+ 			       const hc2hc_desc *desc);
+diff -ur fftw-3.3.2-orig/tests/Makefile.in fftw-3.3.2/tests/Makefile.in
+--- fftw-3.3.2-orig/tests/Makefile.in	2012-04-28 10:58:44 -0400
++++ fftw-3.3.2/tests/Makefile.in	2013-06-24 19:57:50 -0400
+@@ -65,7 +65,7 @@
+ 	$(top_builddir)/libbench2/libbench2.a $(am__DEPENDENCIES_1)
+ bench_LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
+ 	--mode=link $(CCLD) $(bench_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) \
+-	$(LDFLAGS) -o $@
++	$(LDFLAGS) -Wl,-subsystem:console -o $@
+ DEFAULT_INCLUDES = -I.@am__isrc@ -I$(top_builddir)
+ depcomp = $(SHELL) $(top_srcdir)/depcomp
+ am__depfiles_maybe = depfiles
+@@ -229,7 +229,7 @@
+ top_srcdir = @top_srcdir@
+ AM_CPPFLAGS = -I$(top_srcdir)/kernel -I$(top_srcdir)/libbench2	\
+ -I$(top_srcdir)/dft -I$(top_srcdir)/rdft -I$(top_srcdir)/reodft	\
+--I$(top_srcdir)/threads -I$(top_srcdir)/api 
++-I$(top_srcdir)/threads -I$(top_srcdir)/api -DFFTW_DLL
+ 
+ EXTRA_DIST = check.pl README
+ @OPENMP_TRUE@@THREADS_FALSE@bench_CFLAGS = $(OPENMP_CFLAGS)
+diff -ur fftw-3.3.2-orig/threads/Makefile.in fftw-3.3.2/threads/Makefile.in
+--- fftw-3.3.2-orig/threads/Makefile.in	2012-04-28 10:58:44 -0400
++++ fftw-3.3.2/threads/Makefile.in	2013-06-24 17:28:37 -0400
+@@ -291,7 +291,8 @@
+ top_builddir = @top_builddir@
+ top_srcdir = @top_srcdir@
+ AM_CPPFLAGS = -I$(top_srcdir)/kernel -I$(top_srcdir)/dft	\
+--I$(top_srcdir)/rdft -I$(top_srcdir)/api
++-I$(top_srcdir)/rdft -I$(top_srcdir)/api			\
++-DCALLING_FFTW -DCOMPILING_FFTW_THREADS
+ 
+ AM_CFLAGS = $(STACK_ALIGN_CFLAGS)
+ @OPENMP_FALSE@FFTWOMPLIB = 
+@@ -307,7 +308,7 @@
+ vrank-geq1-rdft2.c f77api.c f77funcs.h
+ 
+ libfftw3@PREC_SUFFIX@_threads_la_CFLAGS = $(AM_CFLAGS) $(PTHREAD_CFLAGS)
+-libfftw3@PREC_SUFFIX@_threads_la_LDFLAGS = -version-info @SHARED_VERSION_INFO@
++libfftw3@PREC_SUFFIX@_threads_la_LDFLAGS = -no-undefined -version-info @SHARED_VERSION_INFO@
+ @COMBINED_THREADS_FALSE@libfftw3@PREC_SUFFIX@_threads_la_LIBADD = ../libfftw3@PREC_SUFFIX@.la
+ libfftw3@PREC_SUFFIX@_omp_la_SOURCES = api.c conf.c openmp.c	\
+ threads.h dft-vrank-geq1.c ct.c rdft-vrank-geq1.c hc2hc.c	\
+diff -ur fftw-3.3.2-orig/tools/Makefile.in fftw-3.3.2/tools/Makefile.in
+--- fftw-3.3.2-orig/tools/Makefile.in	2012-04-28 10:58:44 -0400
++++ fftw-3.3.2/tools/Makefile.in	2013-06-24 20:01:18 -0400
+@@ -74,7 +74,7 @@
+ fftw@PREC_SUFFIX@_wisdom_LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) \
+ 	$(LIBTOOLFLAGS) --mode=link $(CCLD) \
+ 	$(fftw@PREC_SUFFIX@_wisdom_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) \
+-	$(LDFLAGS) -o $@
++	$(LDFLAGS) -Wl,-subsystem:console -o $@
+ am__vpath_adj_setup = srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`;
+ am__vpath_adj = case $$p in \
+     $(srcdir)/*) f=`echo "$$p" | sed "s|^$$srcdirstrip/||"`;; \