[lmi] [PATCH 1/3] Avoid warnings about unused local functions and types.

[Vadim Zeitlin]

 Hello,

 While trying to build latest LMI on Linux, I ran into several issues with
g++ 4.9.1. Here is the first of the 3 patches needed to make LMI compile
with it without errors or warnings. I also have some changes to configure
and Makefile.am, which I am going to commit myself, if there are no
objections.

-- >8 --
Don't define functions and types unless they are really used. This avoids

        'function' defined but not used [-Werror=unused-function]
        typedef 'name' locally defined but not used 
[-Werror=unused-local-typedefs]

warnings/errors generated by at least g++ 4.9.1.
---
 actuarial_table.cpp   | 2 ++
 custom_io_0.cpp       | 4 ++++
 interest_rates.cpp    | 3 ++-
 istream_to_string.hpp | 2 +-
 4 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/actuarial_table.cpp b/actuarial_table.cpp
index 619618d..447137b 100644
--- a/actuarial_table.cpp
+++ b/actuarial_table.cpp
@@ -907,6 +907,7 @@ void soa_actuarial_table::read_values(std::istream& is, int 
nominal_length)
     return v;
 }
 
+#if defined LMI_USE_XML_TABLES
 namespace
 {
     bool almost_equal_doubles(std::vector<double> const& a, 
std::vector<double> const& b)
@@ -936,6 +937,7 @@ void soa_actuarial_table::read_values(std::istream& is, int 
nominal_length)
         return true;
     }
 } // Unnamed namespace.
+#endif // !defined LMI_USE_XML_TABLES
 
 std::vector<double> actuarial_table_rates
     (std::string const& table_filename
diff --git a/custom_io_0.cpp b/custom_io_0.cpp
index 9649b10..0f66101 100644
--- a/custom_io_0.cpp
+++ b/custom_io_0.cpp
@@ -144,6 +144,9 @@ bool custom_io_0_file_exists()
     return InputSequence(general_account_rate).mathematical_representation();
 }
 
+// This function is currently unused. Reenable it if the call to it below is
+// uncommented.
+#if 0
 void test_adjust_interest_rates()
 {
     std::vector<double> declared_rate;
@@ -192,6 +195,7 @@ void test_adjust_interest_rates()
         ;
     warning() << std::flush;
 }
+#endif
 
 } // Unnamed namespace.
 
diff --git a/interest_rates.cpp b/interest_rates.cpp
index d5ca279..3a8859a 100644
--- a/interest_rates.cpp
+++ b/interest_rates.cpp
@@ -230,7 +230,7 @@
 /// Determine whether loan rates are needed; else they can be zero.
 ///
 /// Loan rates can potentially affect GPT calculations.
-
+#if 0
 bool need_loan_rates(yare_input const& yi)
 {
     return
@@ -244,6 +244,7 @@ bool need_loan_rates(yare_input const& yi)
         ||  !each_equal(yi.NewLoan.begin(), yi.NewLoan.end(), 0.0)
         ;
 }
+#endif
 } // Unnamed namespace.
 
 InterestRates::~InterestRates()
diff --git a/istream_to_string.hpp b/istream_to_string.hpp
index 168bdc6..c9119f3 100644
--- a/istream_to_string.hpp
+++ b/istream_to_string.hpp
@@ -46,8 +46,8 @@ void istream_to_string
     ,std::basic_string<Char_t,Traits,Allocator>& s
     )
 {
-    typedef std::basic_string<Char_t,Traits,Allocator> string_type;
 #if 0
+    typedef std::basic_string<Char_t,Traits,Allocator> string_type;
     // Requires <iterator>.
     typedef std::istreambuf_iterator<Char_t,Traits> bisbi;
     string_type((bisbi(is)), bisbi()).swap(s);
-- 
2.1.0.rc0