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portable: template: use as a subproject Move template into its own subproject as it's only needed at compile-time and shouldn't be installed. This needs compiling with the host compiler which is configurable via HOSTCC and HOSTCLFAG environment variables. This diff largely from op@ but additional tweaking from myself.
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 1 9981e8e3 2023-01-19 thomas /*

 2 9981e8e3 2023-01-19 thomas  * Copyright (c) 2021 Omar Polo <op@omarpolo.com>

 3 9981e8e3 2023-01-19 thomas  *

 4 9981e8e3 2023-01-19 thomas  * Permission to use, copy, modify, and distribute this software for any

 5 9981e8e3 2023-01-19 thomas  * purpose with or without fee is hereby granted, provided that the above

 6 9981e8e3 2023-01-19 thomas  * copyright notice and this permission notice appear in all copies.

 7 9981e8e3 2023-01-19 thomas  *

 8 9981e8e3 2023-01-19 thomas  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES

 9 9981e8e3 2023-01-19 thomas  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF

10 9981e8e3 2023-01-19 thomas  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR

11 9981e8e3 2023-01-19 thomas  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES

12 9981e8e3 2023-01-19 thomas  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN

13 9981e8e3 2023-01-19 thomas  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF

14 9981e8e3 2023-01-19 thomas  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

15 9981e8e3 2023-01-19 thomas  */

16 9981e8e3 2023-01-19 thomas 

17 9981e8e3 2023-01-19 thomas #include <errno.h>

18 9981e8e3 2023-01-19 thomas #include <stdarg.h>

19 9981e8e3 2023-01-19 thomas #include <stdio.h>

20 9981e8e3 2023-01-19 thomas #include <stdlib.h>

21 9981e8e3 2023-01-19 thomas #include <string.h>

22 9981e8e3 2023-01-19 thomas 

23 9981e8e3 2023-01-19 thomas static void vwarn_impl(const char*, va_list);

24 9981e8e3 2023-01-19 thomas static void vwarnx_impl(const char*, va_list);

25 9981e8e3 2023-01-19 thomas 

26 9981e8e3 2023-01-19 thomas static void

27 9981e8e3 2023-01-19 thomas vwarn_impl(const char *fmt, va_list ap)

28 9981e8e3 2023-01-19 thomas {

29 9981e8e3 2023-01-19 thomas 	fprintf(stderr, "%s: ", getprogname());

30 9981e8e3 2023-01-19 thomas 	vfprintf(stderr, fmt, ap);

31 9981e8e3 2023-01-19 thomas 	fprintf(stderr, ": %s\n", strerror(errno));

32 9981e8e3 2023-01-19 thomas }

33 9981e8e3 2023-01-19 thomas 

34 9981e8e3 2023-01-19 thomas static void

35 9981e8e3 2023-01-19 thomas vwarnx_impl(const char *fmt, va_list ap)

36 9981e8e3 2023-01-19 thomas {

37 9981e8e3 2023-01-19 thomas 	fprintf(stderr, "%s: ", getprogname());

38 9981e8e3 2023-01-19 thomas 	vfprintf(stderr, fmt, ap);

39 9981e8e3 2023-01-19 thomas 	fprintf(stderr, "\n");

40 9981e8e3 2023-01-19 thomas }

41 9981e8e3 2023-01-19 thomas 

42 9981e8e3 2023-01-19 thomas void

43 9981e8e3 2023-01-19 thomas err(int ret, const char *fmt, ...)

44 9981e8e3 2023-01-19 thomas {

45 9981e8e3 2023-01-19 thomas 	va_list	ap;

46 9981e8e3 2023-01-19 thomas 

47 9981e8e3 2023-01-19 thomas 	va_start(ap, fmt);

48 9981e8e3 2023-01-19 thomas 	vwarn_impl(fmt, ap);

49 9981e8e3 2023-01-19 thomas 	va_end(ap);

50 9981e8e3 2023-01-19 thomas 	exit(ret);

51 9981e8e3 2023-01-19 thomas }

52 9981e8e3 2023-01-19 thomas 

53 9981e8e3 2023-01-19 thomas void

54 9981e8e3 2023-01-19 thomas errx(int ret, const char *fmt, ...)

55 9981e8e3 2023-01-19 thomas {

56 9981e8e3 2023-01-19 thomas 	va_list	ap;

57 9981e8e3 2023-01-19 thomas 

58 9981e8e3 2023-01-19 thomas 	va_start(ap, fmt);

59 9981e8e3 2023-01-19 thomas 	vwarnx_impl(fmt, ap);

60 9981e8e3 2023-01-19 thomas 	va_end(ap);

61 9981e8e3 2023-01-19 thomas 	exit(ret);

62 9981e8e3 2023-01-19 thomas }

63 9981e8e3 2023-01-19 thomas 

64 9981e8e3 2023-01-19 thomas void

65 9981e8e3 2023-01-19 thomas warn(const char *fmt, ...)

66 9981e8e3 2023-01-19 thomas {

67 9981e8e3 2023-01-19 thomas 	va_list	ap;

68 9981e8e3 2023-01-19 thomas 

69 9981e8e3 2023-01-19 thomas 	va_start(ap, fmt);

70 9981e8e3 2023-01-19 thomas 	vwarn_impl(fmt, ap);

71 9981e8e3 2023-01-19 thomas 	va_end(ap);

72 9981e8e3 2023-01-19 thomas }

73 9981e8e3 2023-01-19 thomas 

74 9981e8e3 2023-01-19 thomas void

75 9981e8e3 2023-01-19 thomas warnx(const char *fmt, ...)

76 9981e8e3 2023-01-19 thomas {

77 9981e8e3 2023-01-19 thomas 	va_list	ap;

78 9981e8e3 2023-01-19 thomas 

79 9981e8e3 2023-01-19 thomas 	va_start(ap, fmt);

80 9981e8e3 2023-01-19 thomas 	vwarnx_impl(fmt, ap);

81 9981e8e3 2023-01-19 thomas 	va_end(ap);

82 9981e8e3 2023-01-19 thomas }