My system is 64-bit Ubuntu 11.04, and I've installed the developers libraries. I thought ./configure ran fine, but checking config.log shows:
Code: Select all
gcc version 4.5.2 (Ubuntu/Linaro 4.5.2-8ubuntu4)
configure:3401: $? = 0
configure:3390: gcc -V >&5
gcc: '-V' option must have argument
configure:3401: $? = 1
configure:3390: gcc -qversion >&5
gcc: unrecognized option '-qversion'
gcc: no input filesCode: Select all
configure:4060: checking for gcc option to accept ISO C99
configure:4209: gcc -c -g -O2 -D_UNIX conftest.c >&5
conftest.c:61:29: error: expected ';', ',' or ')' before 'text'
conftest.c: In function 'main':
conftest.c:115:18: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'newvar'
conftest.c:115:18: error: 'newvar' undeclared (first use in this function)
conftest.c:115:18: note: each undeclared identifier is reported only once for each function it appears in
conftest.c:125:3: error: 'for' loop initial declarations are only allowed in C99 mode
conftest.c:125:3: note: use option -std=c99 or -std=gnu99 to compile your code
configure:4209: $? = 1
configure: failed program was:
| /* confdefs.h */
| #define PACKAGE_NAME "libfpx"
| #define PACKAGE_TARNAME "libfpx"
| #define PACKAGE_VERSION "1.3.0"
| #define PACKAGE_STRING "libfpx 1.3.0"
| #define PACKAGE_BUGREPORT "http://www.imagemagick.org"
| #define PACKAGE_URL ""
| #define PACKAGE "libfpx"
| #define VERSION "1.3.0"
| /* end confdefs.h. */
| #include <stdarg.h>
| #include <stdbool.h>
| #include <stdlib.h>
| #include <wchar.h>
| #include <stdio.h>
|
| // Check varargs macros. These examples are taken from C99 6.10.3.5.
| #define debug(...) fprintf (stderr, __VA_ARGS__)
| #define showlist(...) puts (#__VA_ARGS__)
| #define report(test,...) ((test) ? puts (#test) : printf (__VA_ARGS__))
| static void
| test_varargs_macros (void)
| {
| int x = 1234;
| int y = 5678;
| debug ("Flag");
| debug ("X = %d\n", x);
| showlist (The first, second, and third items.);
| report (x>y, "x is %d but y is %d", x, y);
| }
|
| // Check long long types.
| #define BIG64 18446744073709551615ull
| #define BIG32 4294967295ul
| #define BIG_OK (BIG64 / BIG32 == 4294967297ull && BIG64 % BIG32 == 0)
| #if !BIG_OK
| your preprocessor is broken;
| #endif
| #if BIG_OK
| #else
| your preprocessor is broken;
| #endif
| static long long int bignum = -9223372036854775807LL;
| static unsigned long long int ubignum = BIG64;
|
| struct incomplete_array
| {
| int datasize;
| double data[];
| };
|
| struct named_init {
| int number;
| const wchar_t *name;
| double average;
| };
|
| typedef const char *ccp;
|
| static inline int
| test_restrict (ccp restrict text)
| {
| // See if C++-style comments work.
| // Iterate through items via the restricted pointer.
| // Also check for declarations in for loops.
| for (unsigned int i = 0; *(text+i) != '\0'; ++i)
| continue;
| return 0;
| }
|
| // Check varargs and va_copy.
| static void
| test_varargs (const char *format, ...)
| {
| va_list args;
| va_start (args, format);
| va_list args_copy;
| va_copy (args_copy, args);
|
| const char *str;
| int number;
| float fnumber;
|
| while (*format)
| {
| switch (*format++)
| {
| case 's': // string
| str = va_arg (args_copy, const char *);
| break;
| case 'd': // int
| number = va_arg (args_copy, int);
| break;
| case 'f': // float
| fnumber = va_arg (args_copy, double);
| break;
| default:
| break;
| }
| }
| va_end (args_copy);
| va_end (args);
| }
|
| int
| main ()
| {
|
| // Check bool.
| _Bool success = false;
|
| // Check restrict.
| if (test_restrict ("String literal") == 0)
| success = true;
| char *restrict newvar = "Another string";
|
| // Check varargs.
| test_varargs ("s, d' f .", "string", 65, 34.234);
| test_varargs_macros ();
|
| // Check flexible array members.
| struct incomplete_array *ia =
| malloc (sizeof (struct incomplete_array) + (sizeof (double) * 10));
| ia->datasize = 10;
| for (int i = 0; i < ia->datasize; ++i)
| ia->data[i] = i * 1.234;
|
| // Check named initializers.
| struct named_init ni = {
| .number = 34,
| .name = L"Test wide string",
| .average = 543.34343,
| };
|
| ni.number = 58;
|
| int dynamic_array[ni.number];
| dynamic_array[ni.number - 1] = 543;
|
| // work around unused variable warnings
| return (!success || bignum == 0LL || ubignum == 0uLL || newvar[0] == 'x'
| || dynamic_array[ni.number - 1] != 543);
|
| ;
| return 0;
| }