Made build system automatically find sizeof(PhoneNumber)

.gitignore

@@ -1,3 +1,5 @@
 *.swp
 *.o
 *.so
+/get_sizeof_phone_number
+/pg_libphonenumber--*.sql

Makefile

@@ -1,11 +1,21 @@
 EXTENSION := pg_libphonenumber
-DATA := pg_libphonenumber--1.0.sql
+version := 1.0
+extension_script := $(EXTENSION)--$(version).sql
+DATA_built := $(extension_script)
 
 MODULE_big := pg_libphonenumber
 OBJS := pg_libphonenumber.o
 PG_CPPFLAGS := -fPIC -std=c++11 -g
 SHLIB_LINK := -lphonenumber -lstdc++
 
+EXTRA_CLEAN := $(extension_script) get_sizeof_phone_number
+
 PG_CONFIG := pg_config
 PGXS := $(shell $(PG_CONFIG) --pgxs)
 include $(PGXS)
+
+$(extension_script): $(EXTENSION).sql.template get_sizeof_phone_number
+	sed "s/SIZEOF_PHONE_NUMBER/$(shell ./get_sizeof_phone_number)/" $< > $@
+
+get_sizeof_phone_number: get_sizeof_phone_number.cpp
+	g++ $< -o $@

get_sizeof_phone_number.cpp

@@ -0,0 +1,10 @@
+#include <iostream>
+
+#include "phonenumbers/phonenumber.pb.h"
+
+using namespace i18n::phonenumbers;
+
+int main(int argc, const char** argv) {
+	std::cout << sizeof(PhoneNumber) << std::endl;
+	return 0;
+}

pg_libphonenumber.cpp

@@ -1,7 +1,6 @@
 #include <exception>
 #include <string>
 
-#define I18N_PHONENUMBERS_USE_BOOST
 #include "phonenumbers/phonenumberutil.h"
 
 extern "C" {

pg_libphonenumber.sql.template

@@ -19,8 +19,9 @@ CREATE FUNCTION phone_number_send(phone_number) RETURNS bytea
     LANGUAGE c IMMUTABLE STRICT
     AS 'pg_libphonenumber', 'phone_number_send';
 
+--SIZEOF_PHONE_NUMBER is replaced when generating the "real" script.
 CREATE TYPE phone_number (
-    INTERNALLENGTH = 64,
+    INTERNALLENGTH = SIZEOF_PHONE_NUMBER,
     INPUT = phone_number_in,
     OUTPUT = phone_number_out,
     RECEIVE = phone_number_recv,