buildroot/package/libiio/0001-utilities.c-Add-a-check-for-newlocale-function.patch

From 913c2cc740d60450e91e066cf38f5654936a6015 Mon Sep 17 00:00:00 2001
From: Paul Cercueil <paul.cercueil@analog.com>
Date: Mon, 6 Feb 2017 14:04:47 +0100
Subject: [PATCH] utilities.c: Add a check for newlocale() function

uClibc might define __UCLIBC_HAS_LOCALE__, without actually providing
the locale_t type or the setlocale() function.

Signed-off-by: Paul Cercueil <paul.cercueil@analog.com>
---
 CMakeLists.txt       | 1 +
 iio-config.h.cmakein | 1 +
 utilities.c          | 2 +-
 3 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index cb3a48f..b24eff3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -66,6 +66,7 @@ endif()
 include(CheckSymbolExists)
 check_symbol_exists(strdup "string.h" HAS_STRDUP)
 check_symbol_exists(strerror_r "string.h" HAS_STRERROR_R)
+check_symbol_exists(newlocale "locale.h" HAS_NEWLOCALE)
 
 IF(${CMAKE_SYSTEM_NAME} MATCHES "Linux")
 	option(WITH_IIOD "Build the IIO Daemon" ON)
diff --git a/iio-config.h.cmakein b/iio-config.h.cmakein
index 1b8608e..6700326 100644
--- a/iio-config.h.cmakein
+++ b/iio-config.h.cmakein
@@ -21,6 +21,7 @@
 #cmakedefine HAS_PIPE2
 #cmakedefine HAS_STRDUP
 #cmakedefine HAS_STRERROR_R
+#cmakedefine HAS_NEWLOCALE
 #cmakedefine HAS_PTHREAD_SETNAME_NP
 #cmakedefine HAVE_IPV6
 #cmakedefine HAVE_AVAHI
diff --git a/utilities.c b/utilities.c
index 88b8257..21dbd10 100644
--- a/utilities.c
+++ b/utilities.c
@@ -34,7 +34,7 @@
 #endif
 
 #ifdef LOCALE_SUPPORT
-#if defined(__MINGW32__)
+#if defined(__MINGW32__) || (!defined(_WIN32) && !defined(HAS_NEWLOCALE))
 static int read_double_locale(const char *str, double *val)
 {
 	char *end, *old_locale;
-- 
2.11.0