ircd: configure: require C99 compiler
This commit is contained in:
Valerii Iatsko
William Pitcock
parent
b79edd3e79
commit
9258de810b
2 changed files with 188 additions and 178 deletions
359
configure
vendored
359
configure
vendored
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@ -3517,183 +3517,6 @@ ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $
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ac_compiler_gnu=$ac_cv_c_compiler_gnu
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $CC option to accept ISO C99" >&5
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$as_echo_n "checking for $CC option to accept ISO C99... " >&6; }
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if ${ac_cv_prog_cc_c99+:} false; then :
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$as_echo_n "(cached) " >&6
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else
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ac_cv_prog_cc_c99=no
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ac_save_CC=$CC
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cat confdefs.h - <<_ACEOF >conftest.$ac_ext
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/* end confdefs.h. */
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#include <stdarg.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include <wchar.h>
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#include <stdio.h>
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// Check varargs macros. These examples are taken from C99 6.10.3.5.
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#define debug(...) fprintf (stderr, __VA_ARGS__)
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#define showlist(...) puts (#__VA_ARGS__)
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#define report(test,...) ((test) ? puts (#test) : printf (__VA_ARGS__))
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static void
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test_varargs_macros (void)
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{
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int x = 1234;
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int y = 5678;
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debug ("Flag");
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debug ("X = %d\n", x);
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showlist (The first, second, and third items.);
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report (x>y, "x is %d but y is %d", x, y);
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}
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// Check long long types.
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#define BIG64 18446744073709551615ull
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#define BIG32 4294967295ul
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#define BIG_OK (BIG64 / BIG32 == 4294967297ull && BIG64 % BIG32 == 0)
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#if !BIG_OK
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your preprocessor is broken;
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#endif
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#if BIG_OK
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#else
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your preprocessor is broken;
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#endif
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static long long int bignum = -9223372036854775807LL;
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static unsigned long long int ubignum = BIG64;
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struct incomplete_array
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{
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int datasize;
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double data[];
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};
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struct named_init {
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int number;
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const wchar_t *name;
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double average;
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};
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typedef const char *ccp;
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static inline int
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test_restrict (ccp restrict text)
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{
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// See if C++-style comments work.
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// Iterate through items via the restricted pointer.
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// Also check for declarations in for loops.
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for (unsigned int i = 0; *(text+i) != '\0'; ++i)
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continue;
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return 0;
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}
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// Check varargs and va_copy.
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static void
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test_varargs (const char *format, ...)
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{
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va_list args;
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va_start (args, format);
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va_list args_copy;
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va_copy (args_copy, args);
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const char *str;
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int number;
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float fnumber;
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while (*format)
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{
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switch (*format++)
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{
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case 's': // string
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str = va_arg (args_copy, const char *);
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break;
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case 'd': // int
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number = va_arg (args_copy, int);
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break;
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case 'f': // float
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fnumber = va_arg (args_copy, double);
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break;
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default:
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break;
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}
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}
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va_end (args_copy);
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va_end (args);
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}
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int
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main ()
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{
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// Check bool.
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_Bool success = false;
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// Check restrict.
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if (test_restrict ("String literal") == 0)
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success = true;
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char *restrict newvar = "Another string";
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// Check varargs.
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test_varargs ("s, d' f .", "string", 65, 34.234);
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test_varargs_macros ();
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// Check flexible array members.
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struct incomplete_array *ia =
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malloc (sizeof (struct incomplete_array) + (sizeof (double) * 10));
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ia->datasize = 10;
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for (int i = 0; i < ia->datasize; ++i)
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ia->data[i] = i * 1.234;
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// Check named initializers.
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struct named_init ni = {
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.number = 34,
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.name = L"Test wide string",
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.average = 543.34343,
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};
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ni.number = 58;
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int dynamic_array[ni.number];
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dynamic_array[ni.number - 1] = 543;
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// work around unused variable warnings
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return (!success || bignum == 0LL || ubignum == 0uLL || newvar[0] == 'x'
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|| dynamic_array[ni.number - 1] != 543);
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;
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return 0;
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}
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_ACEOF
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for ac_arg in '' -std=gnu99 -std=c99 -c99 -AC99 -D_STDC_C99= -qlanglvl=extc99
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do
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CC="$ac_save_CC $ac_arg"
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if ac_fn_c_try_compile "$LINENO"; then :
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ac_cv_prog_cc_c99=$ac_arg
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fi
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rm -f core conftest.err conftest.$ac_objext
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test "x$ac_cv_prog_cc_c99" != "xno" && break
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done
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rm -f conftest.$ac_ext
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CC=$ac_save_CC
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fi
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# AC_CACHE_VAL
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case "x$ac_cv_prog_cc_c99" in
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x)
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: none needed" >&5
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$as_echo "none needed" >&6; } ;;
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xno)
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5
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$as_echo "unsupported" >&6; } ;;
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*)
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CC="$CC $ac_cv_prog_cc_c99"
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c99" >&5
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$as_echo "$ac_cv_prog_cc_c99" >&6; } ;;
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esac
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if test "x$ac_cv_prog_cc_c99" != xno; then :
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fi
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ac_ext=c
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ac_cpp='$CPP $CPPFLAGS'
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@ -4155,6 +3978,188 @@ $as_echo "$ac_cv_safe_to_define___extensions__" >&6; }
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $CC option to accept ISO C99" >&5
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$as_echo_n "checking for $CC option to accept ISO C99... " >&6; }
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if ${ac_cv_prog_cc_c99+:} false; then :
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$as_echo_n "(cached) " >&6
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else
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ac_cv_prog_cc_c99=no
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ac_save_CC=$CC
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cat confdefs.h - <<_ACEOF >conftest.$ac_ext
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/* end confdefs.h. */
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#include <stdarg.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include <wchar.h>
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#include <stdio.h>
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// Check varargs macros. These examples are taken from C99 6.10.3.5.
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#define debug(...) fprintf (stderr, __VA_ARGS__)
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#define showlist(...) puts (#__VA_ARGS__)
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#define report(test,...) ((test) ? puts (#test) : printf (__VA_ARGS__))
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static void
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test_varargs_macros (void)
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{
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int x = 1234;
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int y = 5678;
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debug ("Flag");
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debug ("X = %d\n", x);
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showlist (The first, second, and third items.);
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report (x>y, "x is %d but y is %d", x, y);
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}
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// Check long long types.
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#define BIG64 18446744073709551615ull
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#define BIG32 4294967295ul
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#define BIG_OK (BIG64 / BIG32 == 4294967297ull && BIG64 % BIG32 == 0)
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#if !BIG_OK
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your preprocessor is broken;
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#endif
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#if BIG_OK
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#else
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your preprocessor is broken;
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#endif
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static long long int bignum = -9223372036854775807LL;
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static unsigned long long int ubignum = BIG64;
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struct incomplete_array
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{
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int datasize;
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double data[];
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};
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struct named_init {
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int number;
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const wchar_t *name;
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double average;
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};
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typedef const char *ccp;
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static inline int
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test_restrict (ccp restrict text)
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{
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// See if C++-style comments work.
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// Iterate through items via the restricted pointer.
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// Also check for declarations in for loops.
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for (unsigned int i = 0; *(text+i) != '\0'; ++i)
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continue;
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return 0;
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}
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// Check varargs and va_copy.
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static void
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test_varargs (const char *format, ...)
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{
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va_list args;
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va_start (args, format);
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va_list args_copy;
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va_copy (args_copy, args);
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const char *str;
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int number;
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float fnumber;
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while (*format)
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{
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switch (*format++)
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{
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case 's': // string
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str = va_arg (args_copy, const char *);
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break;
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case 'd': // int
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number = va_arg (args_copy, int);
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break;
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case 'f': // float
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fnumber = va_arg (args_copy, double);
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break;
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default:
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break;
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}
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}
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va_end (args_copy);
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va_end (args);
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}
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int
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main ()
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{
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// Check bool.
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_Bool success = false;
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// Check restrict.
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if (test_restrict ("String literal") == 0)
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success = true;
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char *restrict newvar = "Another string";
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// Check varargs.
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test_varargs ("s, d' f .", "string", 65, 34.234);
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test_varargs_macros ();
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// Check flexible array members.
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struct incomplete_array *ia =
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malloc (sizeof (struct incomplete_array) + (sizeof (double) * 10));
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ia->datasize = 10;
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for (int i = 0; i < ia->datasize; ++i)
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ia->data[i] = i * 1.234;
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// Check named initializers.
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struct named_init ni = {
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.number = 34,
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.name = L"Test wide string",
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.average = 543.34343,
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};
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ni.number = 58;
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int dynamic_array[ni.number];
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dynamic_array[ni.number - 1] = 543;
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// work around unused variable warnings
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return (!success || bignum == 0LL || ubignum == 0uLL || newvar[0] == 'x'
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|| dynamic_array[ni.number - 1] != 543);
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;
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return 0;
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}
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_ACEOF
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for ac_arg in '' -std=gnu99 -std=c99 -c99 -AC99 -D_STDC_C99= -qlanglvl=extc99
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do
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CC="$ac_save_CC $ac_arg"
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if ac_fn_c_try_compile "$LINENO"; then :
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ac_cv_prog_cc_c99=$ac_arg
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fi
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rm -f core conftest.err conftest.$ac_objext
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test "x$ac_cv_prog_cc_c99" != "xno" && break
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done
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rm -f conftest.$ac_ext
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CC=$ac_save_CC
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fi
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# AC_CACHE_VAL
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case "x$ac_cv_prog_cc_c99" in
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x)
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: none needed" >&5
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$as_echo "none needed" >&6; } ;;
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xno)
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5
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$as_echo "unsupported" >&6; } ;;
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*)
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CC="$CC $ac_cv_prog_cc_c99"
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c99" >&5
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$as_echo "$ac_cv_prog_cc_c99" >&6; } ;;
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esac
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if test "x$ac_cv_prog_cc_c99" != xno; then :
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fi
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if test x"$ac_cv_prog_cc_c99" = "xno"; then
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as_fn_error $? "charybdis requires a C99 capable compiler" "$LINENO" 5
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fi
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ac_config_headers="$ac_config_headers include/setup.h"
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@ -7,10 +7,15 @@ AC_PREREQ(2.60)
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AC_INIT([charybdis], [3.6.0-dev])
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AC_LANG(C)
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AC_PROG_CC_C99
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AC_USE_SYSTEM_EXTENSIONS
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AC_GNU_SOURCE
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AC_PROG_CC_C99
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if test x"$ac_cv_prog_cc_c99" = "xno"; then
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AC_ERROR([charybdis requires a C99 capable compiler])
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fi
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AC_PREFIX_DEFAULT($HOME/ircd)
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AC_CONFIG_MACRO_DIR([m4])
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AC_CONFIG_HEADER(include/setup.h)
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