configure: WARNING: no indent program found: make indent target will not function
ar: `u' modifier ignored since `D' is the default (see `U')
scanflags.c:65:13: warning: incompatible integer to pointer conversion passing 'long' to parameter of type 'const char *' [-Wint-conversion]
            (long)sizeof(scanflags_t));
            ^~~~~~~~~~~~~~~~~~~~~~~~~
./flexdef.h:912:60: note: passing argument to parameter here
extern void lerrsf_fatal PROTO ((const char *, const char *));
                                                           ^
1 warning generated.
main.c:1581:5: warning: add explicit braces to avoid dangling else [-Wdangling-else]
                         else
                         ^
1 warning generated.
buf.c:101:60: warning: assigning to 'char *' from 'const char *' discards qualifiers [-Wincompatible-pointer-types-discards-qualifiers]
    for (dst = t + sprintf (t, "#line %d \"", lineno), src = filename; *src; *dst++ = *src++)
                                                           ^ ~~~~~~~~
1 warning generated.
CMake Warning:
  Manually-specified variables were not used by the project:

    CMAKE_EXPORT_NO_PACKAGE_REGISTRY


/home/conan/w/cci_PR-3873/5/a5f09169-84c2-40b0-8dfa-32c15b872b5d/recipes/flex/all/test_package/build/e856affd5323cef50ebdf58b5fb9c11a020262c1/basic_nr.cpp:553:2: warning: 'register' storage class specifier is deprecated and incompatible with C++17 [-Wdeprecated-register]
        register yy_state_type yy_current_state;
        ^~~~~~~~~
/home/conan/w/cci_PR-3873/5/a5f09169-84c2-40b0-8dfa-32c15b872b5d/recipes/flex/all/test_package/build/e856affd5323cef50ebdf58b5fb9c11a020262c1/basic_nr.cpp:554:2: warning: 'register' storage class specifier is deprecated and incompatible with C++17 [-Wdeprecated-register]
        register char *yy_cp, *yy_bp;
        ^~~~~~~~~
/home/conan/w/cci_PR-3873/5/a5f09169-84c2-40b0-8dfa-32c15b872b5d/recipes/flex/all/test_package/build/e856affd5323cef50ebdf58b5fb9c11a020262c1/basic_nr.cpp:554:2: warning: 'register' storage class specifier is deprecated and incompatible with C++17 [-Wdeprecated-register]
        register char *yy_cp, *yy_bp;
        ^~~~~~~~~
/home/conan/w/cci_PR-3873/5/a5f09169-84c2-40b0-8dfa-32c15b872b5d/recipes/flex/all/test_package/build/e856affd5323cef50ebdf58b5fb9c11a020262c1/basic_nr.cpp:555:2: warning: 'register' storage class specifier is deprecated and incompatible with C++17 [-Wdeprecated-register]
        register int yy_act;
        ^~~~~~~~~
/home/conan/w/cci_PR-3873/5/a5f09169-84c2-40b0-8dfa-32c15b872b5d/recipes/flex/all/test_package/build/e856affd5323cef50ebdf58b5fb9c11a020262c1/basic_nr.cpp:605:4: warning: 'register' storage class specifier is deprecated and incompatible with C++17 [-Wdeprecated-register]
                        register YY_CHAR yy_c = yy_ec[YY_SC_TO_UI(*yy_cp)] ;
                        ^~~~~~~~~
/home/conan/w/cci_PR-3873/5/a5f09169-84c2-40b0-8dfa-32c15b872b5d/recipes/flex/all/test_package/build/e856affd5323cef50ebdf58b5fb9c11a020262c1/basic_nr.cpp:928:6: warning: 'register' storage class specifier is deprecated and incompatible with C++17 [-Wdeprecated-register]
        register char *dest = YY_CURRENT_BUFFER_LVALUE->yy_ch_buf;
        ^~~~~~~~~
/home/conan/w/cci_PR-3873/5/a5f09169-84c2-40b0-8dfa-32c15b872b5d/recipes/flex/all/test_package/build/e856affd5323cef50ebdf58b5fb9c11a020262c1/basic_nr.cpp:929:2: warning: 'register' storage class specifier is deprecated and incompatible with C++17 [-Wdeprecated-register]
        register char *source = (yytext_ptr);
        ^~~~~~~~~
/home/conan/w/cci_PR-3873/5/a5f09169-84c2-40b0-8dfa-32c15b872b5d/recipes/flex/all/test_package/build/e856affd5323cef50ebdf58b5fb9c11a020262c1/basic_nr.cpp:930:2: warning: 'register' storage class specifier is deprecated and incompatible with C++17 [-Wdeprecated-register]
        register int number_to_move, i;
        ^~~~~~~~~
/home/conan/w/cci_PR-3873/5/a5f09169-84c2-40b0-8dfa-32c15b872b5d/recipes/flex/all/test_package/build/e856affd5323cef50ebdf58b5fb9c11a020262c1/basic_nr.cpp:930:2: warning: 'register' storage class specifier is deprecated and incompatible with C++17 [-Wdeprecated-register]
        register int number_to_move, i;
        ^~~~~~~~~
/home/conan/w/cci_PR-3873/5/a5f09169-84c2-40b0-8dfa-32c15b872b5d/recipes/flex/all/test_package/build/e856affd5323cef50ebdf58b5fb9c11a020262c1/basic_nr.cpp:1062:2: warning: 'register' storage class specifier is deprecated and incompatible with C++17 [-Wdeprecated-register]
        register yy_state_type yy_current_state;
        ^~~~~~~~~
/home/conan/w/cci_PR-3873/5/a5f09169-84c2-40b0-8dfa-32c15b872b5d/recipes/flex/all/test_package/build/e856affd5323cef50ebdf58b5fb9c11a020262c1/basic_nr.cpp:1063:2: warning: 'register' storage class specifier is deprecated and incompatible with C++17 [-Wdeprecated-register]
        register char *yy_cp;
        ^~~~~~~~~
/home/conan/w/cci_PR-3873/5/a5f09169-84c2-40b0-8dfa-32c15b872b5d/recipes/flex/all/test_package/build/e856affd5323cef50ebdf58b5fb9c11a020262c1/basic_nr.cpp:1069:3: warning: 'register' storage class specifier is deprecated and incompatible with C++17 [-Wdeprecated-register]
                register YY_CHAR yy_c = (*yy_cp ? yy_ec[YY_SC_TO_UI(*yy_cp)] : 1);
                ^~~~~~~~~
/home/conan/w/cci_PR-3873/5/a5f09169-84c2-40b0-8dfa-32c15b872b5d/recipes/flex/all/test_package/build/e856affd5323cef50ebdf58b5fb9c11a020262c1/basic_nr.cpp:1094:2: warning: 'register' storage class specifier is deprecated and incompatible with C++17 [-Wdeprecated-register]
        register int yy_is_jam;
        ^~~~~~~~~
/home/conan/w/cci_PR-3873/5/a5f09169-84c2-40b0-8dfa-32c15b872b5d/recipes/flex/all/test_package/build/e856affd5323cef50ebdf58b5fb9c11a020262c1/basic_nr.cpp:1095:6: warning: 'register' storage class specifier is deprecated and incompatible with C++17 [-Wdeprecated-register]
        register char *yy_cp = (yy_c_buf_p);
        ^~~~~~~~~
/home/conan/w/cci_PR-3873/5/a5f09169-84c2-40b0-8dfa-32c15b872b5d/recipes/flex/all/test_package/build/e856affd5323cef50ebdf58b5fb9c11a020262c1/basic_nr.cpp:1097:2: warning: 'register' storage class specifier is deprecated and incompatible with C++17 [-Wdeprecated-register]
        register YY_CHAR yy_c = 1;
        ^~~~~~~~~
/home/conan/w/cci_PR-3873/5/a5f09169-84c2-40b0-8dfa-32c15b872b5d/recipes/flex/all/test_package/build/e856affd5323cef50ebdf58b5fb9c11a020262c1/basic_nr.cpp:1115:39: warning: 'register' storage class specifier is deprecated and incompatible with C++17 [-Wdeprecated-register]
    void yyFlexLexer::yyunput( int c, register char* yy_bp)
                                      ^~~~~~~~~
/home/conan/w/cci_PR-3873/5/a5f09169-84c2-40b0-8dfa-32c15b872b5d/recipes/flex/all/test_package/build/e856affd5323cef50ebdf58b5fb9c11a020262c1/basic_nr.cpp:1117:2: warning: 'register' storage class specifier is deprecated and incompatible with C++17 [-Wdeprecated-register]
        register char *yy_cp;
        ^~~~~~~~~
/home/conan/w/cci_PR-3873/5/a5f09169-84c2-40b0-8dfa-32c15b872b5d/recipes/flex/all/test_package/build/e856affd5323cef50ebdf58b5fb9c11a020262c1/basic_nr.cpp:1127:3: warning: 'register' storage class specifier is deprecated and incompatible with C++17 [-Wdeprecated-register]
                register yy_size_t number_to_move = (yy_n_chars) + 2;
                ^~~~~~~~~
/home/conan/w/cci_PR-3873/5/a5f09169-84c2-40b0-8dfa-32c15b872b5d/recipes/flex/all/test_package/build/e856affd5323cef50ebdf58b5fb9c11a020262c1/basic_nr.cpp:1128:3: warning: 'register' storage class specifier is deprecated and incompatible with C++17 [-Wdeprecated-register]
                register char *dest = &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[
                ^~~~~~~~~
/home/conan/w/cci_PR-3873/5/a5f09169-84c2-40b0-8dfa-32c15b872b5d/recipes/flex/all/test_package/build/e856affd5323cef50ebdf58b5fb9c11a020262c1/basic_nr.cpp:1130:3: warning: 'register' storage class specifier is deprecated and incompatible with C++17 [-Wdeprecated-register]
                register char *source =
                ^~~~~~~~~
20 warnings generated.