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| author | Tavian Barnes <tavianator@tavianator.com> | 2024-08-09 23:26:25 -0400 |
|---|---|---|
| committer | Tavian Barnes <tavianator@tavianator.com> | 2024-08-09 23:28:55 -0400 |
| commit | 1507cc211f6ce5b4f20f83470eacf44755a0cdcc (patch) | |
| tree | 79f204eeb7ebdceeee027297d48d1d59802d3f66 /src/xspawn.h | |
| parent | baf9ee660c9f1d44d64341e225f9e0d7b808424d (diff) | |
| download | bfs-1507cc211f6ce5b4f20f83470eacf44755a0cdcc.tar.xz | |
bfstd: New sysoption() macro to check for POSIX option runtime support
POSIX allows optional features to be supported at compile time but not
necessarily at run time by defining _POSIX_OPTION to 0 and requiring
users to check sysconf(_SC_OPTION) > 0. The new sysoption() macro
simplifies the check.
sighook() and bfs_spawn() now check for conditional runtime support for
the relevant POSIX options.
Diffstat (limited to 'src/xspawn.h')
| -rw-r--r-- | src/xspawn.h | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/src/xspawn.h b/src/xspawn.h index 6a8f54a..05dcf99 100644 --- a/src/xspawn.h +++ b/src/xspawn.h @@ -13,7 +13,13 @@ #include <sys/types.h> #include <unistd.h> -#if _POSIX_SPAWN > 0 +#ifdef _POSIX_SPAWN +# define BFS_POSIX_SPAWN _POSIX_SPAWN +#else +# define BFS_POSIX_SPAWN (-1) +#endif + +#if BFS_POSIX_SPAWN >= 0 # include <spawn.h> #endif @@ -38,7 +44,7 @@ struct bfs_spawn { struct bfs_spawn_action *head; struct bfs_spawn_action **tail; -#if _POSIX_SPAWN > 0 +#if BFS_POSIX_SPAWN >= 0 /** posix_spawn() context, for when we can use it. */ posix_spawn_file_actions_t actions; posix_spawnattr_t attr; |