From 055c3d3e1d75fedac44ffb41943350d9844f5b7e Mon Sep 17 00:00:00 2001
From: chenjh <chenjinhui@rt-thread.com>
Date: Fri, 26 Feb 2021 18:23:52 +0800
Subject: [Update] Sync from v4.0.3

---
 components/libc/pthreads/SConscript | 22 +++++++++++++++++-----
 1 file changed, 17 insertions(+), 5 deletions(-)

(limited to 'components/libc/pthreads/SConscript')

diff --git a/components/libc/pthreads/SConscript b/components/libc/pthreads/SConscript
index 1b7b75bfd1..767b406d4c 100644
--- a/components/libc/pthreads/SConscript
+++ b/components/libc/pthreads/SConscript
@@ -1,10 +1,22 @@
 from building import *
+from utils import VersionCmp
 
-cwd = GetCurrentDir()
-src	= Glob('*.c')
-CPPPATH = [cwd]
+cwd        = GetCurrentDir()
+src        = Glob('*.c')
+CPPPATH    = [cwd]
+CPPDEFINES = []
 
-group = DefineGroup('pthreads', src, 
-    depend = ['RT_USING_PTHREADS', 'RT_USING_LIBC'], CPPPATH = CPPPATH)
+# only enable POSIX.1b-1993 Real-time extensions
+libc_ver   = GetDepend('LIBC_VERSION')
+try:
+    ver = libc_ver.split(' ')
+    ver = ver[1]
+    if VersionCmp(ver, "2.5.0") == 1:
+        CPPDEFINES = ['_POSIX_C_SOURCE=199309L']
+except :
+    pass
+
+group = DefineGroup('libc', src, 
+    depend = ['RT_USING_PTHREADS', 'RT_USING_LIBC'], CPPPATH = CPPPATH, CPPDEFINES = CPPDEFINES)
 
 Return('group')
-- 
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