[evolution-ews] Bug 653157 - Enable extra compiler warnings in maintainer mode only

[Milan Crha <mcrha src gnome org>]

commit 3dc6dd369fcc94c7f8651b8382ff85d11c7b4dd3
Author: Milan Crha <mcrha redhat com>
Date:   Mon Sep 29 13:28:51 2014 +0200

    Bug 653157 - Enable extra compiler warnings in maintainer mode only
    
    The 'extra' means also deprecated warnings. Those are not interesting
    for non-developers.

 configure.ac |   13 ++++++++++---
 1 files changed, 10 insertions(+), 3 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 9d0e49f..817c00d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -113,15 +113,22 @@ AC_SUBST(LIBM)
 dnl ***********************
 dnl Compiler Warning Flags
 dnl ***********************
+proposed_warning_flags=
+
+if test "x$enable_maintainer_mode" = "xyes" ; then
+       proposed_warning_flags="-Wall -Wextra -Wdeprecated-declarations"
+else
+       proposed_warning_flags="-Wno-deprecated-declarations"
+fi
+
 AS_COMPILER_FLAGS(WARNING_FLAGS,
-       "-Wall -Wextra
-       -Wdeprecated-declarations
+       "$proposed_warning_flags
        -Wno-missing-field-initializers
        -Wno-sign-compare
        -Wno-unused-parameter
        -Wdeclaration-after-statement
        -Werror-implicit-function-declaration
-       -Wformat-nonliteral -Wformat-security -Winit-self
+       -Wformat -Wformat-nonliteral -Wformat-security -Winit-self
        -Wmissing-declarations -Wmissing-include-dirs
        -Wmissing-noreturn -Wnested-externs -Wpointer-arith
        -Wundef -Wwrite-strings")