How to fix rostime compile #error C++ versions less than C++14 are not supported.
Problem
You are trying to compile rostime using
git clone https://github.com/ros/roscpp_core.git
cd roscpp_core/rostime
colcon build
but you see the following error:
In file included from /usr/src/googletest/googletest/include/gtest/gtest-message.h:57,
from /usr/src/googletest/googletest/include/gtest/gtest-assertion-result.h:46,
from /usr/src/googletest/googletest/include/gtest/gtest.h:64,
from /home/uli/dev/Versatile/roscpp_core/rostime/test/time.cpp:33:
/usr/src/googletest/googletest/include/gtest/internal/gtest-port.h:279:2: error: #error C++ versions less than C++14 are not supported.
279 | #error C++ versions less than C++14 are not supported.
| ^~~~~
In file included from /usr/include/boost/math/special_functions/round.hpp:14,
from /home/uli/dev/Versatile/roscpp_core/rostime/include/ros/time.h:58,
from /home/uli/dev/Versatile/roscpp_core/rostime/include/ros/rate.h:40,
from /home/uli/dev/Versatile/roscpp_core/rostime/test/time.cpp:34:
/usr/include/boost/math/tools/config.hpp:23:6: warning: #warning "The minimum language standard to use Boost.Math will be C++14 starting in July 2023 (Boost 1.82 release)" [-Wcpp]
23 | # warning "The minimum language standard to use Boost.Math will be C++14 starting in July 2023 (Boost 1.82 release)"
| ^~~~~~~
/usr/src/googletest/googletest/include/gtest/gtest-assertion-result.h: In member function ‘void testing::AssertionResult::AppendMessage(const testing::Message&)’:
/usr/src/googletest/googletest/include/gtest/gtest-assertion-result.h:207:48: error: ‘make_unique’ is not a member of ‘std’
207 | if (message_ == nullptr) message_ = ::std::make_unique<::std::string>();
| ^~~~~~~~~~~
/usr/src/googletest/googletest/include/gtest/gtest-assertion-result.h:207:48: note: ‘std::make_unique’ is only available from C++14 onwards
/usr/src/googletest/googletest/include/gtest/gtest-assertion-result.h:207:73: error: expected primary-expression before ‘>’ token
207 | if (message_ == nullptr) message_ = ::std::make_unique<::std::string>();
| ^
/usr/src/googletest/googletest/include/gtest/gtest-assertion-result.h:207:75: error: expected primary-expression before ‘)’ token
207 | if (message_ == nullptr) message_ = ::std::make_unique<::std::string>();
| ^
In file included from /usr/src/googletest/googletest/include/gtest/gtest-printers.h:122,
from /usr/src/googletest/googletest/include/gtest/gtest-matchers.h:49,
from /usr/src/googletest/googletest/include/gtest/internal/gtest-death-test-internal.h:47,
from /usr/src/googletest/googletest/include/gtest/gtest-death-test.h:43,
from /usr/src/googletest/googletest/include/gtest/gtest.h:65:
/usr/src/googletest/googletest/include/gtest/internal/gtest-internal.h: At global scope:
/usr/src/googletest/googletest/include/gtest/internal/gtest-internal.h:622:58: error: wrong number of template arguments (0, should be 1)
622 | typedef ::std::map<std::string, CodeLocation, std::less<>> RegisteredTestsMap;
| ^
In file included from /usr/include/c++/13/bits/refwrap.h:39,
from /usr/include/c++/13/vector:68,
from /home/uli/dev/Versatile/roscpp_core/rostime/test/time.cpp:31:
/usr/include/c++/13/bits/stl_function.h:403:12: note: provided for ‘template<class _Tp> struct std::less’
403 | struct less : public binary_function<_Tp, _Tp, bool>
| ^~~~
/usr/src/googletest/googletest/include/gtest/internal/gtest-internal.h:622:59: error: template argument 3 is invalid
622 | typedef ::std::map<std::string, CodeLocation, std::less<>> RegisteredTestsMap;
| ^~
/usr/src/googletest/googletest/include/gtest/internal/gtest-internal.h: In member function ‘bool testing::internal::TypedTestSuitePState::AddTestName(const char*, int, const char*, const char*)’:
/usr/src/googletest/googletest/include/gtest/internal/gtest-internal.h:599:23: error: request for member ‘insert’ in ‘((testing::internal::TypedTestSuitePState*)this)->testing::internal::TypedTestSuitePState::registered_tests_’, which is of non-class type ‘testing::internal::TypedTestSuitePState::RegisteredTestsMap’ {aka ‘int’}
599 | registered_tests_.insert(
| ^~~~~~
/usr/src/googletest/googletest/include/gtest/internal/gtest-internal.h: In member function ‘bool testing::internal::TypedTestSuitePState::TestExists(const std::string&) const’:
/usr/src/googletest/googletest/include/gtest/internal/gtest-internal.h:605:30: error: request for member ‘count’ in ‘((const testing::internal::TypedTestSuitePState*)this)->testing::internal::TypedTestSuitePState::registered_tests_’, which is of non-class type ‘const testing::internal::TypedTestSuitePState::RegisteredTestsMap’ {aka ‘const int’}
605 | return registered_tests_.count(test_name) > 0;
| ^~~~~
/usr/src/googletest/googletest/include/gtest/internal/gtest-internal.h: In member function ‘const testing::internal::CodeLocation& testing::internal::TypedTestSuitePState::GetCodeLocation(const std::string&) const’:
/usr/src/googletest/googletest/include/gtest/internal/gtest-internal.h:609:40: error: qualified-id in declaration before ‘it’
609 | RegisteredTestsMap::const_iterator it = registered_tests_.find(test_name);
| ^~
/usr/src/googletest/googletest/include/gtest/internal/gtest-internal.h:610:5: error: ‘it’ was not declared in this scope; did you mean ‘int’?
610 | GTEST_CHECK_(it != registered_tests_.end());
| ^~~~~~~~~~~~
/usr/src/googletest/googletest/include/gtest/internal/gtest-internal.h:610:5: error: request for member ‘end’ in ‘((const testing::internal::TypedTestSuitePState*)this)->testing::internal::TypedTestSuitePState::registered_tests_’, which is of non-class type ‘const testing::internal::TypedTestSuitePState::RegisteredTestsMap’ {aka ‘const int’}
610 | GTEST_CHECK_(it != registered_tests_.end());
| ^~~~~~~~~~~~
/usr/src/googletest/googletest/include/gtest/internal/gtest-internal.h:611:12: error: ‘it’ was not declared in this scope; did you mean ‘int’?
611 | return it->second;
| ^~
| int
/usr/src/googletest/googletest/include/gtest/gtest-matchers.h: At global scope:
/usr/src/googletest/googletest/include/gtest/gtest-matchers.h:725:75: error: wrong number of template arguments (0, should be 1)
725 | class EqMatcher : public ComparisonBase<EqMatcher<Rhs>, Rhs, std::equal_to<>> {
| ^
/usr/include/c++/13/bits/stl_function.h:373:12: note: provided for ‘template<class _Tp> struct std::equal_to’
373 | struct equal_to : public binary_function<_Tp, _Tp, bool>
| ^~~~~~~~
/usr/src/googletest/googletest/include/gtest/gtest-matchers.h:725:76: error: template argument 3 is invalid
725 | class EqMatcher : public ComparisonBase<EqMatcher<Rhs>, Rhs, std::equal_to<>> {
| ^~
/usr/src/googletest/googletest/include/gtest/gtest-matchers.h: In constructor ‘testing::internal::EqMatcher<Rhs>::EqMatcher(const Rhs&)’:
/usr/src/googletest/googletest/include/gtest/gtest-matchers.h:728:58: error: wrong number of template arguments (0, should be 1)
728 | : ComparisonBase<EqMatcher<Rhs>, Rhs, std::equal_to<>>(rhs) {}
| ^
/usr/include/c++/13/bits/stl_function.h:373:12: note: provided for ‘template<class _Tp> struct std::equal_to’
373 | struct equal_to : public binary_function<_Tp, _Tp, bool>
| ^~~~~~~~
/usr/src/googletest/googletest/include/gtest/gtest-matchers.h:728:59: error: template argument 3 is invalid
728 | : ComparisonBase<EqMatcher<Rhs>, Rhs, std::equal_to<>>(rhs) {}
| ^~
/usr/src/googletest/googletest/include/gtest/gtest-matchers.h:728:61: error: expected ‘{’ before ‘(’ token
728 | : ComparisonBase<EqMatcher<Rhs>, Rhs, std::equal_to<>>(rhs) {}
| ^
/usr/src/googletest/googletest/include/gtest/gtest-matchers.h: At global scope:
/usr/src/googletest/googletest/include/gtest/gtest-matchers.h:734:67: error: wrong number of template arguments (0, should be 1)
734 | : public ComparisonBase<NeMatcher<Rhs>, Rhs, std::not_equal_to<>> {
| ^
/usr/include/c++/13/bits/stl_function.h:383:12: note: provided for ‘template<class _Tp> struct std::not_equal_to’
383 | struct not_equal_to : public binary_function<_Tp, _Tp, bool>
| ^~~~~~~~~~~~
/usr/src/googletest/googletest/include/gtest/gtest-matchers.h:734:68: error: template argument 3 is invalid
734 | : public ComparisonBase<NeMatcher<Rhs>, Rhs, std::not_equal_to<>> {
| ^~
/usr/src/googletest/googletest/include/gtest/gtest-matchers.h: In constructor ‘testing::internal::NeMatcher<Rhs>::NeMatcher(const Rhs&)’:
/usr/src/googletest/googletest/include/gtest/gtest-matchers.h:737:62: error: wrong number of template arguments (0, should be 1)
737 | : ComparisonBase<NeMatcher<Rhs>, Rhs, std::not_equal_to<>>(rhs) {}
| ^
/usr/include/c++/13/bits/stl_function.h:383:12: note: provided for ‘template<class _Tp> struct std::not_equal_to’
383 | struct not_equal_to : public binary_function<_Tp, _Tp, bool>
| ^~~~~~~~~~~~
/usr/src/googletest/googletest/include/gtest/gtest-matchers.h:737:63: error: template argument 3 is invalid
737 | : ComparisonBase<NeMatcher<Rhs>, Rhs, std::not_equal_to<>>(rhs) {}
| ^~
/usr/src/googletest/googletest/include/gtest/gtest-matchers.h:737:65: error: expected ‘{’ before ‘(’ token
737 | : ComparisonBase<NeMatcher<Rhs>, Rhs, std::not_equal_to<>>(rhs) {}
| ^
/usr/src/googletest/googletest/include/gtest/gtest-matchers.h: At global scope:
/usr/src/googletest/googletest/include/gtest/gtest-matchers.h:742:71: error: wrong number of template arguments (0, should be 1)
742 | class LtMatcher : public ComparisonBase<LtMatcher<Rhs>, Rhs, std::less<>> {
| ^
/usr/include/c++/13/bits/stl_function.h:403:12: note: provided for ‘template<class _Tp> struct std::less’
403 | struct less : public binary_function<_Tp, _Tp, bool>
| ^~~~
/usr/src/googletest/googletest/include/gtest/gtest-matchers.h:742:72: error: template argument 3 is invalid
742 | class LtMatcher : public ComparisonBase<LtMatcher<Rhs>, Rhs, std::less<>> {
| ^~
/usr/src/googletest/googletest/include/gtest/gtest-matchers.h: In constructor ‘testing::internal::LtMatcher<Rhs>::LtMatcher(const Rhs&)’:
/usr/src/googletest/googletest/include/gtest/gtest-matchers.h:745:54: error: wrong number of template arguments (0, should be 1)
745 | : ComparisonBase<LtMatcher<Rhs>, Rhs, std::less<>>(rhs) {}
| ^
/usr/include/c++/13/bits/stl_function.h:403:12: note: provided for ‘template<class _Tp> struct std::less’
403 | struct less : public binary_function<_Tp, _Tp, bool>
| ^~~~
/usr/src/googletest/googletest/include/gtest/gtest-matchers.h:745:55: error: template argument 3 is invalid
745 | : ComparisonBase<LtMatcher<Rhs>, Rhs, std::less<>>(rhs) {}
| ^~
/usr/src/googletest/googletest/include/gtest/gtest-matchers.h:745:57: error: expected ‘{’ before ‘(’ token
745 | : ComparisonBase<LtMatcher<Rhs>, Rhs, std::less<>>(rhs) {}
| ^
/usr/src/googletest/googletest/include/gtest/gtest-matchers.h: At global scope:
/usr/src/googletest/googletest/include/gtest/gtest-matchers.h:750:74: error: wrong number of template arguments (0, should be 1)
750 | class GtMatcher : public ComparisonBase<GtMatcher<Rhs>, Rhs, std::greater<>> {
| ^
/usr/include/c++/13/bits/stl_function.h:393:12: note: provided for ‘template<class _Tp> struct std::greater’
393 | struct greater : public binary_function<_Tp, _Tp, bool>
| ^~~~~~~
/usr/src/googletest/googletest/include/gtest/gtest-matchers.h:750:75: error: template argument 3 is invalid
750 | class GtMatcher : public ComparisonBase<GtMatcher<Rhs>, Rhs, std::greater<>> {
| ^~
/usr/src/googletest/googletest/include/gtest/gtest-matchers.h: In constructor ‘testing::internal::GtMatcher<Rhs>::GtMatcher(const Rhs&)’:
/usr/src/googletest/googletest/include/gtest/gtest-matchers.h:753:57: error: wrong number of template arguments (0, should be 1)
753 | : ComparisonBase<GtMatcher<Rhs>, Rhs, std::greater<>>(rhs) {}
| ^
/usr/include/c++/13/bits/stl_function.h:393:12: note: provided for ‘template<class _Tp> struct std::greater’
393 | struct greater : public binary_function<_Tp, _Tp, bool>
| ^~~~~~~
/usr/src/googletest/googletest/include/gtest/gtest-matchers.h:753:58: error: template argument 3 is invalid
753 | : ComparisonBase<GtMatcher<Rhs>, Rhs, std::greater<>>(rhs) {}
| ^~
/usr/src/googletest/googletest/include/gtest/gtest-matchers.h:753:60: error: expected ‘{’ before ‘(’ token
753 | : ComparisonBase<GtMatcher<Rhs>, Rhs, std::greater<>>(rhs) {}
| ^
/usr/src/googletest/googletest/include/gtest/gtest-matchers.h: At global scope:
/usr/src/googletest/googletest/include/gtest/gtest-matchers.h:759:65: error: wrong number of template arguments (0, should be 1)
759 | : public ComparisonBase<LeMatcher<Rhs>, Rhs, std::less_equal<>> {
| ^
/usr/include/c++/13/bits/stl_function.h:423:12: note: provided for ‘template<class _Tp> struct std::less_equal’
423 | struct less_equal : public binary_function<_Tp, _Tp, bool>
| ^~~~~~~~~~
/usr/src/googletest/googletest/include/gtest/gtest-matchers.h:759:66: error: template argument 3 is invalid
759 | : public ComparisonBase<LeMatcher<Rhs>, Rhs, std::less_equal<>> {
| ^~
/usr/src/googletest/googletest/include/gtest/gtest-matchers.h: In constructor ‘testing::internal::LeMatcher<Rhs>::LeMatcher(const Rhs&)’:
/usr/src/googletest/googletest/include/gtest/gtest-matchers.h:762:60: error: wrong number of template arguments (0, should be 1)
762 | : ComparisonBase<LeMatcher<Rhs>, Rhs, std::less_equal<>>(rhs) {}
| ^
/usr/include/c++/13/bits/stl_function.h:423:12: note: provided for ‘template<class _Tp> struct std::less_equal’
423 | struct less_equal : public binary_function<_Tp, _Tp, bool>
| ^~~~~~~~~~
/usr/src/googletest/googletest/include/gtest/gtest-matchers.h:762:61: error: template argument 3 is invalid
762 | : ComparisonBase<LeMatcher<Rhs>, Rhs, std::less_equal<>>(rhs) {}
| ^~
/usr/src/googletest/googletest/include/gtest/gtest-matchers.h:762:63: error: expected ‘{’ before ‘(’ token
762 | : ComparisonBase<LeMatcher<Rhs>, Rhs, std::less_equal<>>(rhs) {}
| ^
/usr/src/googletest/googletest/include/gtest/gtest-matchers.h: At global scope:
/usr/src/googletest/googletest/include/gtest/gtest-matchers.h:768:68: error: wrong number of template arguments (0, should be 1)
768 | : public ComparisonBase<GeMatcher<Rhs>, Rhs, std::greater_equal<>> {
| ^
/usr/include/c++/13/bits/stl_function.h:413:12: note: provided for ‘template<class _Tp> struct std::greater_equal’
413 | struct greater_equal : public binary_function<_Tp, _Tp, bool>
| ^~~~~~~~~~~~~
/usr/src/googletest/googletest/include/gtest/gtest-matchers.h:768:69: error: template argument 3 is invalid
768 | : public ComparisonBase<GeMatcher<Rhs>, Rhs, std::greater_equal<>> {
| ^~
/usr/src/googletest/googletest/include/gtest/gtest-matchers.h: In constructor ‘testing::internal::GeMatcher<Rhs>::GeMatcher(const Rhs&)’:
/usr/src/googletest/googletest/include/gtest/gtest-matchers.h:771:63: error: wrong number of template arguments (0, should be 1)
771 | : ComparisonBase<GeMatcher<Rhs>, Rhs, std::greater_equal<>>(rhs) {}
| ^
/usr/include/c++/13/bits/stl_function.h:413:12: note: provided for ‘template<class _Tp> struct std::greater_equal’
413 | struct greater_equal : public binary_function<_Tp, _Tp, bool>
| ^~~~~~~~~~~~~
/usr/src/googletest/googletest/include/gtest/gtest-matchers.h:771:64: error: template argument 3 is invalid
771 | : ComparisonBase<GeMatcher<Rhs>, Rhs, std::greater_equal<>>(rhs) {}
| ^~
/usr/src/googletest/googletest/include/gtest/gtest-matchers.h:771:66: error: expected ‘{’ before ‘(’ token
771 | : ComparisonBase<GeMatcher<Rhs>, Rhs, std::greater_equal<>>(rhs) {}
| ^
/usr/src/googletest/googletest/include/gtest/gtest.h: At global scope:
/usr/src/googletest/googletest/include/gtest/gtest.h:302:30: error: ‘std::enable_if_t’ has not been declared
302 | template <typename T, std::enable_if_t<std::is_convertible<T, int64_t>::value,
| ^~~~~~~~~~~
/usr/src/googletest/googletest/include/gtest/gtest.h:302:41: error: expected ‘>’ before ‘<’ token
302 | template <typename T, std::enable_if_t<std::is_convertible<T, int64_t>::value,
Solution
You are trying to compile rostime with newer gtest library versions than officially supported.
You can fix this by replacing -std=c++11 with -std=c++14 in the CMakeLists.txt file of the rostime package.
cd roscpp_core/rostime
sed -i 's/-std=c++11/-std=c++14/g' CMakeLists.txt
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