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1 //  (C) Copyright John Maddock 2004.
2 //  Use, modification and distribution are subject to the
3 //  Boost Software License, Version 1.0. (See accompanying file
4 //  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
5 
6 //
7 // This progam scans for *.ipp files in the libs/config/test
8 // directory and then generates the *.cpp test files from them
9 // along with config_test.cpp and a Jamfile.
10 //
11 
12 #include <boost/regex.hpp>
13 #include <boost/filesystem/path.hpp>
14 #include <boost/filesystem/operations.hpp>
15 #include <boost/filesystem/fstream.hpp>
16 #include <boost/detail/lightweight_main.hpp>
17 #include <iostream>
18 #include <sstream>
19 #include <string>
20 #include <set>
21 #include <ctime>
22 
23 namespace fs = boost::filesystem;
24 
25 fs::path config_path;
26 
27 std::string copyright(
28 "//  Copyright John Maddock 2002-4.\n"
29 "//  Use, modification and distribution are subject to the \n"
30 "//  Boost Software License, Version 1.0. (See accompanying file \n"
31 "//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n"
32 "\n"
33 "//  See http://www.boost.org/libs/config for the most recent version."
34 "//\n//  Revision $Id$\n//\n");
35 
36 std::stringstream config_test1;
37 std::stringstream config_test1a;
38 std::stringstream config_test2;
39 std::stringstream jamfile;
40 std::stringstream jamfile_v2;
41 std::stringstream build_config_test;
42 std::stringstream build_config_jamfile;
43 std::set<std::string> macro_list;
44 std::set<std::string> feature_list;
45 
write_config_info()46 void write_config_info()
47 {
48    // load the file into memory so we can scan it:
49    fs::ifstream ifs(config_path / "config_info.cpp");
50    std::string file_text;
51    std::copy(std::istreambuf_iterator<char>(ifs), std::istreambuf_iterator<char>(), std::back_inserter(file_text));
52    ifs.close();
53    // create macro list:
54    std::stringstream ss;
55    for(std::set<std::string>::const_iterator i(macro_list.begin()), j(macro_list.end());
56       i != j;
57       ++i)
58    {
59       ss << "   PRINT_MACRO(" << *i << ");\n";
60    }
61    std::string macros = ss.str();
62    // scan for Boost macro block:
63    boost::regex re("BEGIN\\s+GENERATED\\s+BLOCK\\s+DO\\s+NOT\\s+EDIT\\s+THIS[^\\n]+\\n(.*?)\\n\\s+//\\s*END\\s+GENERATED\\s+BLOCK");
64    boost::smatch what;
65    if(boost::regex_search(file_text, what, re))
66    {
67       std::string new_text;
68       new_text.append(what.prefix().first, what[1].first);
69       new_text.append(macros);
70       new_text.append(what[1].second, what.suffix().second);
71       fs::ofstream ofs(config_path / "config_info.cpp");
72       ofs << new_text;
73    }
74 }
75 
write_config_test()76 void write_config_test()
77 {
78    fs::ofstream ofs(config_path / "config_test.cpp");
79    time_t t = std::time(0);
80    ofs << "//  This file was automatically generated on " << std::ctime(&t);
81    ofs << "//  by libs/config/tools/generate.cpp\n" << copyright << std::endl;
82    ofs << "// Test file for config setup\n"
83       "// This file should compile, if it does not then\n"
84       "// one or more macros need to be defined.\n"
85       "// see boost_*.ipp for more details\n\n"
86       "// Do not edit this file, it was generated automatically by\n\n"
87       "#include <boost/config.hpp>\n#include <iostream>\n#include \"test.hpp\"\n\n"
88       "int error_count = 0;\n\n";
89    ofs << config_test1.str() << std::endl;
90    ofs << config_test1a.str() << std::endl;
91    ofs << "int main( int, char *[] )\n{\n" << config_test2.str() << "   return error_count;\n}\n\n";
92 }
93 
write_jamfile_v2()94 void write_jamfile_v2()
95 {
96    fs::ofstream ofs(config_path / "all" / "Jamfile.v2");
97    time_t t = std::time(0);
98    ofs << "#\n# Regression test Jamfile for boost configuration setup.\n# *** DO NOT EDIT THIS FILE BY HAND ***\n"
99       "# This file was automatically generated on " << std::ctime(&t);
100    ofs << "#  by libs/config/tools/generate.cpp\n"
101       "# Copyright John Maddock.\n"
102       "# Use, modification and distribution are subject to the \n"
103       "# Boost Software License, Version 1.0. (See accompanying file \n"
104       "# LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n"
105       "#\n# If you need to alter build preferences then set them in\n"
106       "# the template defined in options_v2.jam.\n#\n"
107       "path-constant DOT : . ;\n"
108       "include $(DOT)/options_v2.jam ;\n\n"
109       "run ../config_info.cpp  : : : <threading>single <toolset>msvc:<runtime-link>static <toolset>msvc:<link>static ;\n"
110       "run ../config_info.cpp  : : : <threading>multi : config_info_threaded ;\n"
111       "run ../math_info.cpp : : : <toolset>borland:<runtime-link>static <toolset>borland:<link>static ;\n"
112       "run ../config_test.cpp : : : <threading>single <toolset>msvc:<runtime-link>static <toolset>msvc:<link>static ;\n"
113       "run ../config_test.cpp : : : <threading>multi : config_test_threaded ;\n"
114       "run ../limits_test.cpp ../../../test/build//boost_test_exec_monitor ;\n"
115       "run ../abi/abi_test.cpp ../abi/main.cpp  ;\n\n";
116    ofs << jamfile_v2.str() << std::endl;
117 
118 }
119 
write_test_file(const fs::path & file,const std::string & macro_name,const std::string & namespace_name,const std::string & header_file,bool positive_test,bool expect_success)120 void write_test_file(const fs::path& file,
121                      const std::string& macro_name,
122                      const std::string& namespace_name,
123                      const std::string& header_file,
124                      bool positive_test,
125                      bool expect_success)
126 {
127    if(!fs::exists(file))
128    {
129       std::cout << "Writing test file " << file.string() << std::endl;
130 
131       fs::ofstream ofs(file);
132       std::time_t t = std::time(0);
133       ofs << "//  This file was automatically generated on " << std::ctime(&t);
134       ofs << "//  by libs/config/tools/generate.cpp\n" << copyright << std::endl;
135       ofs << "\n// Test file for macro " << macro_name << std::endl;
136 
137       if(expect_success)
138       {
139          ofs << "// This file should compile, if it does not then\n"
140             "// " << macro_name << " should ";
141          if(positive_test)
142             ofs << "not ";
143          ofs << "be defined.\n";
144       }
145       else
146       {
147          ofs << "// This file should not compile, if it does then\n"
148             "// " << macro_name << " should ";
149          if(!positive_test)
150             ofs << "not ";
151          ofs << "be defined.\n";
152       }
153       ofs << "// See file " << header_file << " for details\n\n";
154 
155       ofs << "// Must not have BOOST_ASSERT_CONFIG set; it defeats\n"
156          "// the objective of this file:\n"
157          "#ifdef BOOST_ASSERT_CONFIG\n"
158          "#  undef BOOST_ASSERT_CONFIG\n"
159          "#endif\n\n";
160 
161       static const boost::regex tr1_exp("BOOST_HAS_TR1.*");
162 
163       ofs << "#include <boost/config.hpp>\n";
164 
165       ofs << "#include \"test.hpp\"\n\n"
166          "#if";
167       if(positive_test != expect_success)
168          ofs << "n";
169       ofs << "def " << macro_name <<
170          "\n#include \"" << header_file <<
171          "\"\n#else\n";
172       if(expect_success)
173          ofs << "namespace " << namespace_name << " = empty_boost;\n";
174       else
175          ofs << "#error \"this file should not compile\"\n";
176       ofs << "#endif\n\n";
177 
178       ofs << "int main( int, char *[] )\n{\n   return " << namespace_name << "::test();\n}\n\n";
179    }
180    else
181    {
182       std::cout << "Skipping existing test file " << file.string() << std::endl;
183    }
184 }
185 
write_build_tests()186 void write_build_tests()
187 {
188    fs::ofstream ofs(config_path / ".." / "checks" / "test_case.cpp");
189    time_t t = std::time(0);
190    ofs << "//  This file was automatically generated on " << std::ctime(&t);
191    ofs << "//  by libs/config/tools/generate.cpp\n" << copyright << std::endl;
192    ofs << "#include <boost/config.hpp>\n\n";
193    ofs << build_config_test.str() << std::endl;
194    ofs << "int main( int, char *[] )\n{\n" << "   return 0;\n}\n\n";
195 }
196 
write_build_check_jamfile()197 void write_build_check_jamfile()
198 {
199    fs::ofstream ofs(config_path / ".." / "checks" / "Jamfile.v2");
200    time_t t = std::time(0);
201    ofs << "#\n# *** DO NOT EDIT THIS FILE BY HAND ***\n"
202       "# This file was automatically generated on " << std::ctime(&t);
203    ofs << "#  by libs/config/tools/generate.cpp\n"
204       "# Copyright John Maddock.\n"
205       "# Use, modification and distribution are subject to the \n"
206       "# Boost Software License, Version 1.0. (See accompanying file \n"
207       "# LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n"
208       "import modules ;\nimport path ; \n\n"
209       "\n"
210       ;
211    ofs << build_config_jamfile.str() << std::endl;
212 }
213 
process_ipp_file(const fs::path & file,bool positive_test)214 void process_ipp_file(const fs::path& file, bool positive_test)
215 {
216    std::cout << "Info: Scanning file: " << file.string() << std::endl;
217 
218    // our variables:
219    std::string file_text;
220    std::string macro_name;
221    std::string namespace_name;
222    fs::path positive_file;
223    fs::path negative_file;
224 
225    // load the file into memory so we can scan it:
226    fs::ifstream ifs(file);
227    std::copy(std::istreambuf_iterator<char>(ifs), std::istreambuf_iterator<char>(), std::back_inserter(file_text));
228    ifs.close();
229    // scan for the macro name:
230    boost::regex macro_regex("//\\s*MACRO\\s*:\\s*(\\w+)");
231    boost::smatch macro_match;
232    if(boost::regex_search(file_text, macro_match, macro_regex))
233    {
234       macro_name = macro_match[1];
235       macro_list.insert(macro_name);
236       namespace_name = boost::regex_replace(file_text, macro_regex, "\\L$1", boost::format_first_only | boost::format_no_copy);
237    }
238    if(macro_name.empty())
239    {
240       std::cout << "Error: no macro definition found in " << file.string();
241    }
242    else
243    {
244       std::cout << "Info: Macroname: " << macro_name << std::endl;
245    }
246 
247    // get the output filesnames:
248    boost::regex file_regex("boost_([^.]+)\\.ipp");
249    positive_file = file.branch_path() / boost::regex_replace(file.leaf().string(), file_regex, "$1_pass.cpp");
250    negative_file = file.branch_path() / boost::regex_replace(file.leaf().string(), file_regex, "$1_fail.cpp");
251    write_test_file(positive_file, macro_name, namespace_name, file.leaf().string(), positive_test, true);
252    write_test_file(negative_file, macro_name, namespace_name, file.leaf().string(), positive_test, false);
253 
254    // always create config_test data,
255    // positive and negative tests go to separate streams, because for some
256    // reason some compilers choke unless we put them in a particular order...
257    std::ostream* pout = positive_test ? &config_test1a : &config_test1;
258    *pout << "#if";
259    if(!positive_test)
260       *pout << "n";
261    *pout << "def " << macro_name
262       << "\n#include \"" << file.leaf().string() << "\"\n#else\nnamespace "
263       << namespace_name << " = empty_boost;\n#endif\n";
264 
265    config_test2 << "   if(0 != " << namespace_name << "::test())\n"
266       "   {\n"
267       "      std::cerr << \"Failed test for " << macro_name << " at: \" << __FILE__ << \":\" << __LINE__ << std::endl;\n"
268       "      ++error_count;\n"
269       "   }\n";
270 
271    // always generate the jamfile data:
272    jamfile << "test-suite \"" << macro_name << "\" : \n"
273       "[ run " << positive_file.leaf().string() << " <template>config_options ]\n"
274       "[ compile-fail " << negative_file.leaf().string() << " <template>config_options ] ;\n";
275 
276    jamfile_v2 << "test-suite \"" << macro_name << "\" : \n"
277       "[ run ../" << positive_file.leaf().string() << " ]\n"
278       "[ compile-fail ../" << negative_file.leaf().string() << " ] ;\n";
279 
280    // Generate data for the Build-checks test file:
281    build_config_test << "#ifdef TEST_" << macro_name << std::endl;
282    if (positive_test)
283    {
284       build_config_test << "#  ifndef " << macro_name << "\n#     error \"Feature macro " << macro_name << " is not defined.\"\n#  endif\n";
285    }
286    else
287    {
288       build_config_test << "#  ifdef " << macro_name << "\n#     error \"Defect macro " << macro_name << " is defined.\"\n#  endif\n";
289    }
290    build_config_test << "#endif\n";
291 
292    // Generate data for the build-checks Jamfile:
293    static const boost::regex feature_regex("boost_(?:no|has)_(.*)");
294    std::string feature_name = boost::regex_replace(namespace_name, feature_regex, "\\1");
295    if(feature_list.find(feature_name) == feature_list.end())
296       build_config_jamfile << "obj " << feature_name << " : test_case.cpp : <define>TEST_" << macro_name << " ;\n";
297    feature_list.insert(feature_name);
298 }
299 
write_std_check(std::string macroname,int min_value,std::string header,int std_version,bool primary=true)300 void write_std_check(std::string macroname, int min_value, std::string header, int std_version, bool primary = true)
301 {
302    std::string test_name(macroname);
303    while (test_name[0] == '_')
304       test_name.erase(0, 1);
305    std::string test_basename = test_name;
306    test_name.append("_");
307    test_name.append(1, std_version > 10 ? std_version / 10 + '0' : '0');
308    test_name.append(1, std_version % 10 + '0');
309    fs::ofstream ofs(config_path / ".." / "checks" / "std" / (test_name + ".cpp"));
310    time_t t = std::time(0);
311    ofs << "//  This file was automatically generated on " << std::ctime(&t);
312    ofs << "//  by libs/config/tools/generate.cpp\n" << copyright << std::endl;
313    ofs << "#ifdef __has_include\n#if __has_include(<version>)\n#include <version>\n#endif\n#endif\n\n";
314    if (header.size())
315    {
316       ofs << "#include <" << header << ">\n\n";
317    }
318    ofs << "#ifndef " << macroname << "\n#error \"Macro << " << macroname << " is not set\"\n#endif\n\n";
319    ofs << "#if " << macroname << " < " << min_value << "\n#error \"Macro " << macroname << " had too low a value\"\n#endif\n\n";
320    ofs << "int main( int, char *[] )\n{\n" << "   return 0;\n}\n\n";
321 
322    build_config_jamfile << "obj " << test_name << " : std/" << test_name << ".cpp ;\n";
323    if(primary)
324       build_config_jamfile << "alias " << test_basename << " : " << test_name << " ;\n";
325 }
326 
write_std_config_checks()327 void write_std_config_checks()
328 {
329    // C++20
330    write_std_check("__cpp_impl_destroying_delete", 201806, "", 20);
331    write_std_check("__cpp_lib_destroying_delete", 201806, "new", 20);
332    write_std_check("__cpp_char8_t", 201811, "", 20);
333    write_std_check("__cpp_impl_three_way_comparison", 201711, "", 20);
334    write_std_check("__cpp_lib_three_way_comparison", 201711, "compare", 20);
335    write_std_check("__cpp_conditional_explicit", 201806, "", 20);
336    write_std_check("__cpp_nontype_template_parameter_class", 201806, "", 20);
337    write_std_check("__cpp_lib_char8_t", 201811, "atomic", 20);
338    write_std_check("__cpp_lib_concepts", 201806, "concepts", 20);
339    write_std_check("__cpp_lib_constexpr_swap_algorithms", 201806, "algorithm", 20);
340    write_std_check("__cpp_lib_constexpr_misc", 201811, "array", 20);
341    write_std_check("__cpp_lib_bind_front", 201811, "functional", 20);
342    write_std_check("__cpp_lib_is_constant_evaluated", 201811, "type_traits", 20);
343    write_std_check("__cpp_lib_erase_if", 201811, "string", 20);
344    write_std_check("__cpp_lib_list_remove_return_type", 201806, "forward_list", 20);
345    write_std_check("__cpp_lib_generic_unordered_lookup", 201811, "unordered_map", 20);
346    write_std_check("__cpp_lib_ranges", 201811, "algorithm", 20);
347    write_std_check("__cpp_lib_bit_cast", 201806, "bit", 20);
348    write_std_check("__cpp_lib_atomic_ref", 201806, "atomic", 20);
349    // C++17
350    write_std_check("__cpp_hex_float", 201603, "", 17);
351    write_std_check("__cpp_inline_variables", 201606, "", 17);
352    write_std_check("__cpp_aligned_new", 201606, "", 17);
353    write_std_check("__cpp_guaranteed_copy_elision", 201606, "", 17);
354    write_std_check("__cpp_noexcept_function_type", 201510, "", 17);
355    write_std_check("__cpp_fold_expressions", 201603, "", 17);
356    write_std_check("__cpp_capture_star_this", 201603, "", 17);
357    write_std_check("__cpp_constexpr", 201603, "", 17, false);
358    write_std_check("__cpp_if_constexpr", 201606, "", 17);
359    write_std_check("__cpp_range_based_for", 201603, "", 17, false);
360    write_std_check("__cpp_static_assert", 201411, "", 17, false);
361    write_std_check("__cpp_deduction_guides", 201611, "", 17);    // NOTE: this is the pre-std version number used by gcc-8, is this OK???
362    write_std_check("__cpp_nontype_template_parameter_auto", 201606, "", 17);
363    write_std_check("__cpp_namespace_attributes", 201411, "", 17);
364    write_std_check("__cpp_enumerator_attributes", 201411, "", 17);
365    write_std_check("__cpp_inheriting_constructors", 201511, "", 17, false);
366    write_std_check("__cpp_variadic_using", 201611, "", 17);
367    write_std_check("__cpp_structured_bindings", 201606, "", 17);
368    write_std_check("__cpp_aggregate_bases", 201603, "", 17);
369    write_std_check("__cpp_nontype_template_args", 201411, "", 17);
370    write_std_check("__cpp_template_template_args", 201611, "", 17);
371    write_std_check("__cpp_lib_byte", 201603, "cstddef", 17);
372    write_std_check("__cpp_lib_hardware_interference_size", 201703, "new", 17);
373    write_std_check("__cpp_lib_launder", 201606, "new", 17);
374    write_std_check("__cpp_lib_uncaught_exceptions", 201411, "exception", 17);
375    write_std_check("__cpp_lib_as_const", 201510, "utility", 17);
376    write_std_check("__cpp_lib_make_from_tuple", 201606, "tuple", 17);
377    write_std_check("__cpp_lib_apply", 201603, "tuple", 17);
378    write_std_check("__cpp_lib_optional", 201606, "optional", 17);
379    write_std_check("__cpp_lib_variant", 201606, "variant", 17);
380    write_std_check("__cpp_lib_any", 201606, "any", 17);
381    write_std_check("__cpp_lib_addressof_constexpr", 201603, "memory", 17);
382    write_std_check("__cpp_lib_raw_memory_algorithms", 201606, "memory", 17);
383    write_std_check("__cpp_lib_transparent_operators", 201510, "memory", 17, false);
384    write_std_check("__cpp_lib_enable_shared_from_this", 201603, "memory", 17);
385    write_std_check("__cpp_lib_shared_ptr_weak_type", 201606, "memory", 17);
386    write_std_check("__cpp_lib_shared_ptr_arrays", 201611, "memory", 17);
387    write_std_check("__cpp_lib_memory_resource", 201603, "memory_resource", 17);
388    write_std_check("__cpp_lib_boyer_moore_searcher", 201603, "functional", 17);
389    write_std_check("__cpp_lib_invoke", 201411, "functional", 17);
390    write_std_check("__cpp_lib_not_fn", 201603, "functional", 17);
391    write_std_check("__cpp_lib_void_t", 201411, "type_traits", 17);
392    write_std_check("__cpp_lib_bool_constant", 201505, "type_traits", 17);
393    write_std_check("__cpp_lib_type_trait_variable_templates", 201510, "type_traits", 17);
394    write_std_check("__cpp_lib_logical_traits", 201510, "type_traits", 17);
395    write_std_check("__cpp_lib_is_swappable", 201603, "type_traits", 17);
396    write_std_check("__cpp_lib_is_invocable", 201703, "type_traits", 17);
397    write_std_check("__cpp_lib_has_unique_object_representations", 201606, "type_traits", 17);
398    write_std_check("__cpp_lib_is_aggregate", 201703, "type_traits", 17);
399    write_std_check("__cpp_lib_chrono", 201611, "chrono", 17);
400    write_std_check("__cpp_lib_execution", 201603, "execution", 17);
401    write_std_check("__cpp_lib_parallel_algorithm", 201603, "algorithm", 17);
402    write_std_check("__cpp_lib_to_chars", 201611, "utility", 17);
403    write_std_check("__cpp_lib_string_view", 201606, "string", 17);
404    write_std_check("__cpp_lib_allocator_traits_is_always_equal", 201411, "memory", 17);
405    write_std_check("__cpp_lib_incomplete_container_elements", 201505, "forward_list", 17);
406    write_std_check("__cpp_lib_map_try_emplace", 201411, "map", 17);
407    write_std_check("__cpp_lib_unordered_map_try_emplace", 201411, "unordered_map", 17);
408    write_std_check("__cpp_lib_node_extract", 201606, "map", 17);
409    write_std_check("__cpp_lib_array_constexpr", 201603, "iterator", 17);
410    write_std_check("__cpp_lib_nonmember_container_access", 201411, "iterator", 17);
411    write_std_check("__cpp_lib_sample", 201603, "algorithm", 17);
412    write_std_check("__cpp_lib_clamp", 201603, "algorithm", 17);
413    write_std_check("__cpp_lib_gcd_lcm", 201606, "numeric", 17);
414    write_std_check("__cpp_lib_hypot", 201603, "cmath", 17);
415    write_std_check("__cpp_lib_math_special_functions", 201603, "cmath", 17);
416    write_std_check("__cpp_lib_filesystem", 201703, "filesystem", 17);
417    write_std_check("__cpp_lib_atomic_is_always_lock_free", 201603, "atomic", 17);
418    write_std_check("__cpp_lib_shared_mutex", 201505, "shared_mutex", 17);
419    write_std_check("__cpp_lib_scoped_lock", 201703, "mutex", 17);
420    // C++14
421    write_std_check("__cpp_binary_literals", 201304, "", 14);
422    write_std_check("__cpp_init_captures", 201304, "", 14);
423    write_std_check("__cpp_generic_lambdas", 201304, "", 14);
424    write_std_check("__cpp_sized_deallocation", 201309, "", 14);
425    write_std_check("__cpp_constexpr", 201304, "", 14, false);
426    write_std_check("__cpp_decltype_auto", 201304, "", 14);
427    write_std_check("__cpp_return_type_deduction", 201304, "", 14);
428    write_std_check("__cpp_aggregate_nsdmi", 201304, "", 14);
429    write_std_check("__cpp_variable_templates", 201304, "", 14);
430    write_std_check("__cpp_lib_integer_sequence", 201304, "utility", 14);
431    write_std_check("__cpp_lib_exchange_function", 201304, "utility", 14);
432    write_std_check("__cpp_lib_tuples_by_type", 201304, "utility", 14);
433    write_std_check("__cpp_lib_tuple_element_t", 201402, "tuple", 14);
434    write_std_check("__cpp_lib_make_unique", 201304, "memory", 14);
435    write_std_check("__cpp_lib_transparent_operators", 201210, "functional", 14);
436    write_std_check("__cpp_lib_integral_constant_callable", 201304, "type_traits", 14);
437    write_std_check("__cpp_lib_transformation_trait_aliases", 201304, "type_traits", 14);
438    write_std_check("__cpp_lib_result_of_sfinae", 201210, "functional", 14);
439    write_std_check("__cpp_lib_is_final", 201402, "type_traits", 14);
440    write_std_check("__cpp_lib_is_null_pointer", 201309, "type_traits", 14);
441    write_std_check("__cpp_lib_chrono_udls", 201304, "chrono", 14);
442    write_std_check("__cpp_lib_string_udls", 201304, "string", 14);
443    write_std_check("__cpp_lib_generic_associative_lookup", 201304, "map", 14);
444    write_std_check("__cpp_lib_null_iterators", 201304, "iterator", 14);
445    write_std_check("__cpp_lib_make_reverse_iterator", 201402, "iterator", 14);
446    write_std_check("__cpp_lib_robust_nonmodifying_seq_ops", 201304, "algorithm", 14);
447    write_std_check("__cpp_lib_complex_udls", 201309, "complex", 14);
448    write_std_check("__cpp_lib_quoted_string_io", 201304, "iomanip", 14);
449    write_std_check("__cpp_lib_shared_timed_mutex", 201402, "shared_mutex", 14);
450    // C++11
451    write_std_check("__cpp_unicode_characters", 200704, "", 11);
452    write_std_check("__cpp_raw_strings", 200710, "", 11);
453    write_std_check("__cpp_unicode_literals", 200710, "", 11);
454    write_std_check("__cpp_user_defined_literals", 200809, "", 11);
455    write_std_check("__cpp_threadsafe_static_init", 200806, "", 11);
456    write_std_check("__cpp_lambdas", 200907, "", 11);
457    write_std_check("__cpp_constexpr", 200704, "", 11);
458    write_std_check("__cpp_range_based_for", 200907, "", 11);
459    write_std_check("__cpp_static_assert", 200410, "", 11);
460    write_std_check("__cpp_decltype", 200707, "", 11);
461    write_std_check("__cpp_attributes", 200809, "", 11);
462    write_std_check("__cpp_rvalue_references", 200610, "", 11);
463    write_std_check("__cpp_variadic_templates", 200704, "", 11);
464    write_std_check("__cpp_initializer_lists", 200806, "", 11);
465    write_std_check("__cpp_explicit_conversion", 200710, "", 11);
466    write_std_check("__cpp_delegating_constructors", 200604, "", 11);
467    write_std_check("__cpp_nsdmi", 200809, "", 11);
468    write_std_check("__cpp_inheriting_constructors", 200802, "", 11);
469    write_std_check("__cpp_ref_qualifiers", 200710, "", 11);
470    write_std_check("__cpp_alias_templates", 200704, "", 11);
471    // C++98
472    write_std_check("__cpp_rtti", 199711, "", 03);
473    write_std_check("__cpp_exceptions", 199711, "", 03);
474 }
475 
cpp_main(int argc,char * argv[])476 int cpp_main(int argc, char* argv[])
477 {
478    //
479    // get the boost path to begin with:
480    //
481    if(argc > 1)
482    {
483       fs::path p(argv[1]);
484       config_path = p / "libs" / "config" / "test" ;
485    }
486    else
487    {
488       // try __FILE__:
489       fs::path p(__FILE__);
490       config_path = p.branch_path().branch_path() / "test";
491    }
492    std::cout << "Info: Boost.Config test path set as: " << config_path.string() << std::endl;
493 
494    // enumerate *.ipp files and store them in a map for now:
495    boost::regex ipp_mask("boost_(?:(has)|no).*\\.ipp");
496    boost::smatch ipp_match;
497    fs::directory_iterator i(config_path), j;
498    std::map<fs::path, bool> files_to_process;
499    while(i != j)
500    {
501       if(boost::regex_match(i->path().leaf().string(), ipp_match, ipp_mask))
502       {
503          files_to_process[*i] = ipp_match[1].matched;
504       }
505       ++i;
506    }
507    // Enumerate the files and process them, by defering this until now
508    // the results are always alphabetized which reduces churn in the
509    // generated files.
510    for(std::map<fs::path, bool>::const_iterator pos = files_to_process.begin(); pos != files_to_process.end(); ++pos)
511    {
512       process_ipp_file(pos->first, pos->second);
513    }
514    write_config_test();
515    write_jamfile_v2();
516    write_config_info();
517    write_std_config_checks();
518    write_build_tests();
519    write_build_check_jamfile();
520    return 0;
521 }
522 
523