diff --git a/Makefile.am b/Makefile.am
index 4ac80e2..186fa85 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -72,7 +72,8 @@ config_include_HEADERS = \
     include/libcork/config/gcc.h \
     include/libcork/config/macosx.h \
     include/libcork/config/bsd.h \
-    include/libcork/config/linux.h \
+    include/libcork/config/gnu.h \
+    include/libcork/config/cygwin.h \
     include/libcork/config/config.h
 
 core_include_HEADERS = \
diff --git a/include/libcork/config/config.h b/include/libcork/config/config.h
index ca49047..adf9a5b 100644
--- a/include/libcork/config/config.h
+++ b/include/libcork/config/config.h
@@ -44,9 +44,9 @@
 #include <sys/param.h>
 #endif
 
-#if defined(__linux) || defined(__FreeBSD_kernel__) || defined(__GNU__)
-/* Do some Linux, kFreeBSD or GNU/Hurd specific autodetection. */
-#include <libcork/config/linux.h>
+#ifdef __GLIBC__
+/* Do some GNU specific autodetection. */
+#include <libcork/config/gnu.h>
 
 #elif defined(__APPLE__) && defined(__MACH__)
 /* Do some Mac OS X-specific autodetection. */
@@ -56,6 +56,10 @@
 /* Do some BSD (4.3 code base or newer)specific autodetection. */
 #include <libcork/config/bsd.h>
 
+#elif defined(__CYGWIN__)
+/* Do some Cygwin autodectection. */
+#include <libcork/config/cygwin.h>
+
 #endif  /* platforms */
 
 
diff --git a/include/libcork/config/cygwin.h b/include/libcork/config/cygwin.h
new file mode 100644
index 0000000..b950de5
--- /dev/null
+++ b/include/libcork/config/cygwin.h
@@ -0,0 +1,33 @@
+/* -*- coding: utf-8 -*-
+ * ----------------------------------------------------------------------
+ * Copyright © 2019, libcork authors
+ * All rights reserved.
+ *
+ * Please see the COPYING file in this distribution for license details.
+ * ----------------------------------------------------------------------
+ */
+
+#ifndef LIBCORK_CONFIG_CYGWIN_H
+#define LIBCORK_CONFIG_CYGWIN_H
+
+/*-----------------------------------------------------------------------
+ * Endianness
+ */
+
+#include <endian.h>
+
+#if __BYTE_ORDER == __BIG_ENDIAN
+#define CORK_CONFIG_IS_BIG_ENDIAN      1
+#define CORK_CONFIG_IS_LITTLE_ENDIAN   0
+#elif __BYTE_ORDER == __LITTLE_ENDIAN
+#define CORK_CONFIG_IS_BIG_ENDIAN      0
+#define CORK_CONFIG_IS_LITTLE_ENDIAN   1
+#else
+#error "Cannot determine system endianness"
+#endif
+
+#define CORK_HAVE_REALLOCF  1
+#define CORK_HAVE_PTHREADS  1
+
+
+#endif /* LIBCORK_CONFIG_CYGWIN_H */
diff --git a/include/libcork/config/linux.h b/include/libcork/config/gnu.h
similarity index 88%
rename from include/libcork/config/linux.h
rename to include/libcork/config/gnu.h
index de4a3d9..b8e6f9a 100644
--- a/include/libcork/config/linux.h
+++ b/include/libcork/config/gnu.h
@@ -7,8 +7,8 @@
  * ----------------------------------------------------------------------
  */
 
-#ifndef LIBCORK_CONFIG_LINUX_H
-#define LIBCORK_CONFIG_LINUX_H
+#ifndef LIBCORK_CONFIG_GNU_H
+#define LIBCORK_CONFIG_GNU_H
 
 /*-----------------------------------------------------------------------
  * Endianness
@@ -30,4 +30,4 @@
 #define CORK_HAVE_PTHREADS  1
 
 
-#endif /* LIBCORK_CONFIG_LINUX_H */
+#endif /* LIBCORK_CONFIG_GNU_H */
diff --git a/src/libcork/posix/subprocess.c b/src/libcork/posix/subprocess.c
index b1d23a5..904240e 100644
--- a/src/libcork/posix/subprocess.c
+++ b/src/libcork/posix/subprocess.c
@@ -497,7 +497,7 @@ cork_subprocess_is_finished(struct cork_subprocess *self)
 #if defined(__APPLE__)
 #include <pthread.h>
 #define THREAD_YIELD   pthread_yield_np
-#elif defined(__linux__) || defined(BSD) || defined(__FreeBSD_kernel__) || defined(__GNU__)
+#elif defined(__linux__) || defined(BSD) || defined(__FreeBSD_kernel__) || defined(__GNU__) || defined(__CYGWIN__)
 #include <sched.h>
 #define THREAD_YIELD   sched_yield
 #else