add a few missing feature macros

src/core/sys/linux/config.d

@@ -11,12 +11,15 @@ public import core.sys.posix.config;
 
 // man 7 feature_test_macros
 // http://www.gnu.org/software/libc/manual/html_node/Feature-Test-Macros.html
-enum _GNU_SOURCE         = true;
+enum _GNU_SOURCE = true;
 // deduced <features.h>
 // http://sourceware.org/git/?p=glibc.git;a=blob;f=include/features.h
-enum _BSD_SOURCE            = true;
-enum _SVID_SOURCE           = true;
-enum _ATFILE_SOURCE         = true;
+enum _BSD_SOURCE = true;
+enum _SVID_SOURCE = true;
+enum _ATFILE_SOURCE = true;
 
-enum __USE_GNU           = _GNU_SOURCE;
-enum __USE_MISC          = _BSD_SOURCE || _SVID_SOURCE;
+enum __USE_MISC = _BSD_SOURCE || _SVID_SOURCE;
+enum __USE_BSD = _BSD_SOURCE;
+enum __USE_SVID = _SVID_SOURCE;
+enum __USE_ATFILE = _ATFILE_SOURCE;
+enum __USE_GNU = _GNU_SOURCE;

src/core/sys/posix/config.d

@@ -31,11 +31,14 @@ version (linux)
     enum _GNU_SOURCE         = false;
     enum _BSD_SOURCE         = false;
     enum _SVID_SOURCE        = false;
+    enum _ATFILE_SOURCE      = false;
 
     enum _FILE_OFFSET_BITS   = 64;
     // <sys/cdefs.h>
     enum __REDIRECT          = false;
 
+    enum _REENTRANT          = true; // set by compiler when linking -pthread
+
     // deduced <features.h>
     enum __USE_FILE_OFFSET64 = _FILE_OFFSET_BITS == 64;
     enum __USE_LARGEFILE     = __USE_FILE_OFFSET64 && !__REDIRECT;
@@ -46,8 +49,12 @@ version (linux)
     enum __USE_XOPEN2K8      = _XOPEN_SOURCE >= 700;
     enum __USE_XOPEN2K8XSI   = _XOPEN_SOURCE >= 700;
 
-    enum __USE_GNU           = _GNU_SOURCE;
     enum __USE_MISC          = _BSD_SOURCE || _SVID_SOURCE;
+    enum __USE_BSD           = _BSD_SOURCE;
+    enum __USE_SVID          = _SVID_SOURCE;
+    enum __USE_ATFILE        = _ATFILE_SOURCE;
+    enum __USE_GNU           = _GNU_SOURCE;
+    enum __USE_REENTRANT     = _REENTRANT;
 
     version(D_LP64)
         enum __WORDSIZE=64;