Tests fail to compile: unknown type name 'GTEST_DISALLOW_COPY_AND_ASSIGN_'

[yurivict]

clang++ -o test -I.. -O2 -pipe -fno-omit-frame-pointer -fstack-protector-strong -isystem /usr/local/include -fno-strict-aliasing -fno-omit-frame-pointer  -isystem /usr/local/include  test.cc include_httplib.cc -fstack-protector-strong -L/usr/local/lib  gtest/gtest-all.cc gtest/gtest_main.cc -DCPPHTTPLIB_OPENSSL_SUPPORT -I/usr/local/opt/openssl@1.1/include -L/usr/local/opt/openssl@1.1/lib -lssl -lcrypto -DCPPHTTPLIB_ZLIB_SUPPORT -lz -DCPPHTTPLIB_BROTLI_SUPPORT -I/usr/local/opt/brotli/include -L/usr/local/opt/brotli/lib -lbrotlicommon -lbrotlienc -lbrotlidec -pthread
gtest/gtest-all.cc:162:3: error: unknown type name 'GTEST_DISALLOW_COPY_AND_ASSIGN_'
  GTEST_DISALLOW_COPY_AND_ASSIGN_(ScopedFakeTestPartResultReporter);
  ^
gtest/gtest-all.cc:183:3: error: unknown type name 'GTEST_DISALLOW_COPY_AND_ASSIGN_'
  GTEST_DISALLOW_COPY_AND_ASSIGN_(SingleFailureChecker);
  ^
gtest/gtest-all.cc:556:28: error: use of undeclared identifier 'FLAGS_gtest_death_test_use_fork'; did you mean '::testing::testing::FLAGS_gtest_death_test_use_fork'?
    death_test_use_fork_ = GTEST_FLAG(death_test_use_fork);
                           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                           ::testing::testing::FLAGS_gtest_death_test_use_fork
/usr/local/include/gtest/internal/gtest-port.h:2181:26: note: expanded from macro 'GTEST_FLAG'
#define GTEST_FLAG(name) FLAGS_gtest_##name
                         ^
<scratch space>:26:1: note: expanded from here
FLAGS_gtest_death_test_use_fork
^
gtest/gtest-all.cc:462:1: note: '::testing::testing::FLAGS_gtest_death_test_use_fork' declared here
GTEST_DECLARE_bool_(death_test_use_fork);
^
/usr/local/include/gtest/internal/gtest-port.h:2232:26: note: expanded from macro 'GTEST_DECLARE_bool_'
  GTEST_API_ extern bool GTEST_FLAG(name); \
                         ^
/usr/local/include/gtest/internal/gtest-port.h:2181:26: note: expanded from macro 'GTEST_FLAG'
#define GTEST_FLAG(name) FLAGS_gtest_##name
                         ^
<scratch space>:16:1: note: expanded from here
FLAGS_gtest_death_test_use_fork
^
gtest/gtest-all.cc:580:5: error: use of undeclared identifier 'FLAGS_gtest_death_test_use_fork'; did you mean '::testing::testing::FLAGS_gtest_death_test_use_fork'?
    GTEST_FLAG(death_test_use_fork) = death_test_use_fork_;
    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    ::testing::testing::FLAGS_gtest_death_test_use_fork
/usr/local/include/gtest/internal/gtest-port.h:2181:26: note: expanded from macro 'GTEST_FLAG'
#define GTEST_FLAG(name) FLAGS_gtest_##name
                         ^
<scratch space>:46:1: note: expanded from here
FLAGS_gtest_death_test_use_fork
^
gtest/gtest-all.cc:462:1: note: '::testing::testing::FLAGS_gtest_death_test_use_fork' declared here
GTEST_DECLARE_bool_(death_test_use_fork);
^
/usr/local/include/gtest/internal/gtest-port.h:2232:26: note: expanded from macro 'GTEST_DECLARE_bool_'
  GTEST_API_ extern bool GTEST_FLAG(name); \
                         ^
/usr/local/include/gtest/internal/gtest-port.h:2181:26: note: expanded from macro 'GTEST_FLAG'
#define GTEST_FLAG(name) FLAGS_gtest_##name
                         ^
<scratch space>:16:1: note: expanded from here
FLAGS_gtest_death_test_use_fork
^
gtest/gtest-all.cc:832:3: error: unknown type name 'GTEST_DISALLOW_COPY_AND_ASSIGN_'
  GTEST_DISALLOW_COPY_AND_ASSIGN_(OsStackTraceGetterInterface);
  ^
gtest/gtest-all.cc:854:3: error: unknown type name 'GTEST_DISALLOW_COPY_AND_ASSIGN_'
  GTEST_DISALLOW_COPY_AND_ASSIGN_(OsStackTraceGetter);
  ^
gtest/gtest-all.cc:877:3: error: unknown type name 'GTEST_DISALLOW_COPY_AND_ASSIGN_'
  GTEST_DISALLOW_COPY_AND_ASSIGN_(DefaultGlobalTestPartResultReporter);
  ^
gtest/gtest-all.cc:893:3: error: unknown type name 'GTEST_DISALLOW_COPY_AND_ASSIGN_'
  GTEST_DISALLOW_COPY_AND_ASSIGN_(DefaultPerThreadTestPartResultReporter);
  ^
gtest/gtest-all.cc:1354:3: error: unknown type name 'GTEST_DISALLOW_COPY_AND_ASSIGN_'
  GTEST_DISALLOW_COPY_AND_ASSIGN_(UnitTestImpl);
  ^
gtest/gtest-all.cc:1445:37: error: no member named 'TestPartResult' in namespace 'testing::testing'
  static const std::vector<testing::TestPartResult>& test_part_results(
                           ~~~~~~~~~^
gtest/gtest-all.cc:1447:12: error: no viable conversion from returned value of type 'const std::vector<TestPartResult>' to function return type 'const int'
    return test_result.test_part_results();
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
gtest/gtest-all.cc:1514:5: error: unknown type name 'GTEST_DISALLOW_COPY_AND_ASSIGN_'
    GTEST_DISALLOW_COPY_AND_ASSIGN_(SocketWriter);
    ^
gtest/gtest-all.cc:1599:3: error: unknown type name 'GTEST_DISALLOW_COPY_AND_ASSIGN_'
  GTEST_DISALLOW_COPY_AND_ASSIGN_(StreamingListener);
  ^
gtest/gtest-all.cc:1521:9: error: no matching constructor for initialization of 'const std::unique_ptr<AbstractSocketWriter>'
      : socket_writer_(new SocketWriter(host, port)) {
        ^              ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/v1/__memory/unique_ptr.h:118:59: note: candidate constructor (the implicit copy constructor) not viable: no known conversion from 'testing::internal::StreamingListener::SocketWriter *' to 'const std::unique_ptr<testing::internal::StreamingListener::AbstractSocketWriter>' for 1st argument
class _LIBCPP_UNIQUE_PTR_TRIVIAL_ABI _LIBCPP_TEMPLATE_VIS unique_ptr {
                                                          ^
/usr/include/c++/v1/__memory/unique_ptr.h:182:21: note: candidate constructor template not viable: no known conversion from 'testing::internal::StreamingListener::SocketWriter *' to 'std::nullptr_t' for 1st argument
  _LIBCPP_CONSTEXPR unique_ptr(nullptr_t) _NOEXCEPT : __ptr_(__value_init_tag(), __value_init_tag()) {}
                    ^

Version: 0.11.0
googletest-1.12.1 (latest)
clang-14
FreeBSD 13.1

[PixlRainbow]

your compiler appears to be attempting to use your system global installation of gtest, which is a different version from what htttplib uses and includes in its test suite.
Your logs indicate your clang is using gtest/gtest.h from /usr/local/include instead of the one bundled with httplib test folder

[yurivict]

After the system googletest is removed it fails like this:

test.cc:3:10: error: 'gtest/gtest.h' file not found with <angled> include; use "quotes" instead
#include <gtest/gtest.h>
         ^~~~~~~~~~~~~~~
         "gtest/gtest.h"

clang-14

[PixlRainbow]

add the test directory to the include search path

[yurivict]

Tests now run, thank you!