File liquid-dsp-mingw-fix.diff of Package mingw32-liquid-dsp

diff --git a/configure.ac b/configure.ac
index 62cd1d3..95a3f7a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -69,8 +69,16 @@ AC_FUNC_MALLOC
 AC_FUNC_REALLOC
 
 # AC_CHECK_LIB (library, function, [action-if-found], [action-if-not-found], [other-libraries])
-AC_CHECK_LIB([c],[main], [],[AC_MSG_ERROR(Could not use standard C library)],   [])
-AC_CHECK_LIB([m],[main], [],[AC_MSG_ERROR(Could not use standard math library)],[])
+AC_CANONICAL_HOST
+case $host_os in
+	mingw*)
+		AC_CHECK_LIB([m],[sqrt], [],[AC_MSG_ERROR(Could not use standard math library)],[])
+		;;
+	*)
+		AC_CHECK_LIB([c],[main], [],[AC_MSG_ERROR(Could not use standard C library)],   [])
+		AC_CHECK_LIB([m],[main], [],[AC_MSG_ERROR(Could not use standard math library)],[])
+		;;
+esac 
 
 # AC_CHECK_FUNC(function, [action-if-found], [action-if-not-found])
 AC_CHECK_FUNC([malloc],  [],[AC_MSG_ERROR(Could not use malloc())])
@@ -100,6 +108,9 @@ AC_CHECK_HEADERS(fec.h fftw3.h)
 AC_CHECK_LIB([fftw3f], [fftwf_plan_dft_1d], [],
              [AC_MSG_WARN(fftw3 library useful but not required)],
              [])
+AC_CHECK_LIB([fftw3f-3], [fftwf_plan_dft_1d], [],
+             [AC_MSG_WARN(fftw3 library useful but not required)],
+             [])             
 AC_CHECK_LIB([fec], [create_viterbi27], [],
              [AC_MSG_WARN(fec library useful but not required)],
              [])
@@ -193,6 +204,10 @@ darwin*)
     SH_LIB=libliquid.dylib
     REBIND=""
     ;;
+mingw*)
+    SH_LIB=libliquid.dll
+    REBIND=""
+    ;;
 *)
     SH_LIB=libliquid.so
     REBIND=ldconfig
diff --git a/makefile.in b/makefile.in
index 776c685..e80ca47 100644
--- a/makefile.in
+++ b/makefile.in
@@ -63,11 +63,18 @@ RANLIB		:= ranlib
 INCLUDE_CFLAGS	= $(addprefix -I ,$(include_dirs))
 CONFIG_CFLAGS	= @CFLAGS@ @DEBUG_OPTION@ @ARCH_OPTION@
 # -g : debugging info
+ifneq (, $(findstring mingw, $(SYS)))
 CFLAGS		+= $(INCLUDE_CFLAGS) -Wall -fPIC $(CONFIG_CFLAGS)
+else
+CFLAGS		+= $(INCLUDE_CFLAGS) -Wall $(CONFIG_CFLAGS)
+endif
 LDFLAGS		+= @LIBS@
 ARFLAGS		= r
 PATHSEP		= /
 
+#build environment specific 
+SYS := $(shell gcc -dumpmachine)
+
 # 
 # liquid headers
 #
@@ -1184,6 +1191,10 @@ libliquid.dylib: $(objects)
 libliquid.so: libliquid.a
 	$(CC) -shared -Xlinker -soname=$@ -o $@ -Wl,-whole-archive $^ -Wl,-no-whole-archive $(LDFLAGS)
 
+# windows, mingw
+libliquid.dll: libliquid.a
+	$(CC) -shared -Xlinker -soname=$@ -o $@ -Wl,-whole-archive,--output-def,libliquid.def,--out-implib,imp_libliquid.lib  $^ -Wl,-no-whole-archive $(LDFLAGS)
+
 all: libliquid.a $(SHARED_LIB)
 
 ##