Index: base/stdint_.h
--- base/stdint_.h.orig	2017-03-16 11:12:02.000000000 +0100
+++ base/stdint_.h	2017-03-16 20:48:56.546507000 +0100
@@ -70,6 +70,13 @@
    typedef unsigned long long uint64_t;
 #  define STDINT_TYPES_DEFINED
 # endif
+#ifdef __sun__
+#  include <sys/int_types.h>
+#  define STDINT_TYPES_DEFINED
+#endif
+#ifdef __FreeBSD__
+#  define STDINT_TYPES_DEFINED
+#endif
    /* other archs may want to add defines here,
       or use the fallbacks in std.h */
 #endif
Index: configure
--- configure.orig	2017-03-16 11:12:44.000000000 +0100
+++ configure	2017-03-16 20:48:56.548377000 +0100
@@ -4380,10 +4380,9 @@
 
 
 if test $ac_cv_c_compiler_gnu = yes; then
-    cflags_to_try="-Wall -Wstrict-prototypes -Wundef \
--Wmissing-declarations -Wmissing-prototypes -Wwrite-strings \
--Wno-strict-aliasing -Werror=declaration-after-statement \
--fno-builtin -fno-common -Werror=return-type"
+    cflags_to_try=" \
+-Wno-strict-aliasing \
+-fno-builtin -fno-common"
     optflags_to_try="$CC_OPT_FLAGS_TO_TRY"
     dbgflags_to_try="$CC_DBG_FLAGS_TO_TRY"
 else