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72157adde6
This introduces a single compile check that ensures that a number of assumed C99 features are there. A number of HAVE_FOO_H and SIZEOF_FOO macros are gone now. We just use standard C99 headers. A similar grouped test should follow for POSIX stuff. A bit less cruft in configure logic and preprocessing. Lots of SIZE_P and similar are gone, also fixing a number of occasions where the debug printf format didn't match the suppplied type (cast missing). git-svn-id: svn://scm.orgis.org/mpg123/trunk@5377 35dc7657-300d-0410-a2e5-dc2837fedb53
51 lines
1.6 KiB
C
51 lines
1.6 KiB
C
// A little test program to group compile tests for standard C99 features
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// we expect for mpg123 code. It is silly testing all headers and types
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// individually, and unnecessarily slow. We mention all of the expected
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// ones here and still fail early with a useful error for the user at
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// configure stage.
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/* This also nicely documents which features are expected. */
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// Basic stuff. exit()
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#include <stdlib.h>
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// For the fixed-width integer types.
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#include <stdint.h>
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// For PRI macros.
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#include <inttypes.h>
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// ptrdiff_t, size_t
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#include <stddef.h>
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// _MAX/_MIN
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#include <limits.h>
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// printf
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#include <stdio.h>
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// strcmp, strlen
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// remember: strcasecmp is POSIX, strings.h (sometimes)
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#include <string.h>
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int main()
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{
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const char *s = "some test string";
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// Mention some types we want to use.
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size_t st = 1337;
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ptrdiff_t pt = 0x3443; // used instead of non-standard ssize_t
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uint16_t u16 = 42;
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uint32_t u32 = 23<<20;
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int16_t i16 = 33;
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int32_t i32 = -1*(21L<<20);
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int64_t i64 = -1*(34L<<40);
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uintmax_t um = 304203;
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intmax_t im = -23434;
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printf( "formats: "
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"%s" " %s" " %s" " %s" " %s" " %s" " %s" " %s" " %s " "\n"
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, "zu", PRIiMAX, PRIu16, PRIu32, PRIi16, PRIi32, PRIi64, PRIuMAX, PRIiMAX );
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printf( "values:"
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" %zu" " %"PRIiMAX " %"PRIu16 " %"PRIu32 " %"PRIi16 " %"PRIi32 " %"PRIi64 " %"PRIuMAX " %"PRIiMAX "\n"
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, st, pt, u16, u32, i16, i32, i64, um, im );
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printf("%ld <= long <= %ld\n", LONG_MIN, LONG_MAX);
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printf( "The test string is %zu bytes long and compares to frick as %d\n"
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, strlen(s), strcmp(s, "frick") );
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exit(EXIT_SUCCESS);
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}
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