From 334eec94f8aedccbbe04dc07075f9b10f2b23185 Mon Sep 17 00:00:00 2001
From: ridiculousfish <corydoras@ridiculousfish.com>
Date: Wed, 20 Feb 2019 12:58:59 -0800
Subject: [PATCH] Define _POSIX_C_SOURCE=200809L

This enables thread-safe errno on Solaris and its descendants.

Fixes #5611
---
 CMakeLists.txt | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index d7ae17b8f..af7b28979 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -129,11 +129,14 @@ SET_SOURCE_FILES_PROPERTIES(src/fish_version.cpp
 
 OPTION(INTERNAL_WCWIDTH "use fallback wcwidth" ON)
 IF(INTERNAL_WCWIDTH)
-    add_definitions(-DHAVE_BROKEN_WCWIDTH=1)
+    ADD_DEFINITIONS(-DHAVE_BROKEN_WCWIDTH=1)
 ELSE()
-    add_definitions(-DHAVE_BROKEN_WCWIDTH=0)
+    ADD_DEFINITIONS(-DHAVE_BROKEN_WCWIDTH=0)
 ENDIF()
 
+# Enable thread-safe errno on Solaris (#5611)
+ADD_DEFINITIONS(-D_POSIX_C_SOURCE=200809L)
+
 # Set up PCRE2
 INCLUDE(cmake/PCRE2.cmake)