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comparison src/configure.ac @ 13716:30f9ebe3e602 v8.0.1730

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patch 8.0.1730: no configure check for the used C99 features commit https://github.com/vim/vim/commit/561f8a5a4612751c2a4ebd6bf918cbc3be867350 Author: Bram Moolenaar <Bram@vim.org> Date: Tue Apr 17 22:02:45 2018 +0200 patch 8.0.1730: no configure check for the used C99 features Problem: No configure check for the used C99 features. Solution: Add a compilation check. Tentatively document C99 features.
author Christian Brabandt <cb@256bit.org>
date Tue, 17 Apr 2018 22:15:07 +0200
parents 7152032191d7
children d35b1702a1da
comparison
equal deleted inserted replaced
13715:9e68fff0070f 13716:30f9ebe3e602
26 26
27 dnl Check for standard headers. We don't use this in Vim but other stuff 27 dnl Check for standard headers. We don't use this in Vim but other stuff
28 dnl in autoconf needs it, where it uses STDC_HEADERS. 28 dnl in autoconf needs it, where it uses STDC_HEADERS.
29 AC_HEADER_STDC 29 AC_HEADER_STDC
30 AC_HEADER_SYS_WAIT 30 AC_HEADER_SYS_WAIT
31
32 dnl Check that the C99 features that Vim uses are supported:
33 dnl - // commands
34 dnl - comma after last enum item
35 dnl - "long long int" and "long long unsigned"
36 dnl - flexible array member
37 AC_MSG_CHECKING(if the compiler can handle Vim code)
38 AC_TRY_COMPILE([#include <stdio.h>], [
39 struct with_flexible_member {
40 int count; // comment
41 char text[]; // another comment
42 };
43 enum {
44 one,
45 two,
46 three,
47 };
48 long long int a = 1;
49 long long unsigned b = 2;
50 printf("a %lld and a %llu", a, b);
51 ],
52 AC_MSG_RESULT(yes),
53 AC_MSG_ERROR([compiler does not work properly - see auto/config.log]))
31 54
32 dnl Check for the flag that fails if stuff are missing. 55 dnl Check for the flag that fails if stuff are missing.
33 56
34 AC_MSG_CHECKING(--enable-fail-if-missing argument) 57 AC_MSG_CHECKING(--enable-fail-if-missing argument)
35 AC_ARG_ENABLE(fail_if_missing, 58 AC_ARG_ENABLE(fail_if_missing,