From 090a36cf8838fb217eaa83d7f72603cb24fccafc Mon Sep 17 00:00:00 2001
From: Chris Mayo <aklhfex@gmail.com>
Date: Wed, 20 Mar 2019 20:14:50 +0000
Subject: [PATCH] Automatically enable system error messages using Autotools

Define HAVE_STRERROR from configure.

Before:
$ cs2cs +proj=latlong +to +proj=latlong dummy
<cs2cs>:
Sys errno: 2: <system mess. texts unavail.>
dummy

After:
$ cs2cs +proj=latlong +to +proj=latlong dummy
<cs2cs>:
Sys errno: 2: No such file or directory
dummy
---
 configure.ac       | 2 ++
 src/apps/emess.cpp | 1 +
 2 files changed, 3 insertions(+)

diff --git a/configure.ac b/configure.ac
index d155432b80..7f0c39557e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -220,6 +220,8 @@ AC_SEARCH_LIBS([sqrt], [m])
 
 AC_CHECK_FUNC(localeconv, [AC_DEFINE(HAVE_LOCALECONV,1,[Define to 1 if you have localeconv])])
 
+AC_CHECK_FUNCS([strerror])
+
 dnl ---------------------------------------------------------------------------
 dnl Check for JNI support.
 dnl ---------------------------------------------------------------------------
diff --git a/src/apps/emess.cpp b/src/apps/emess.cpp
index 144e9e23e2..52f88aa35d 100644
--- a/src/apps/emess.cpp
+++ b/src/apps/emess.cpp
@@ -20,6 +20,7 @@
 #include <string.h>
 
 #include "proj_api.h"
+#include "proj_config.h"
 #define EMESS_ROUTINE
 #include "emess.h"