diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac index af58c1b4..5daff11e 100644 --- a/configure.ac +++ b/configure.ac @@ -371,7 +371,28 @@ AC_ARG_ENABLE([posix-spawn], AS_CASE([/$ac_cv_header_spawn/$ac_cv_func_posix_spawn/], [*/no/*], [make_cv_posix_spawn=no]) -AS_CASE([/$make_cv_posix_spawn/$user_posix_spawn/], +AS_IF([test "$make_cv_posix_spawn" = yes], + AC_CACHE_CHECK([for posix_spawn that fails synchronously], + [make_cv_synchronous_posix_spawn], + [make_cv_synchronous_posix_spawn=no + AC_RUN_IFELSE([AC_LANG_SOURCE([[ + #include <spawn.h> + #include <string.h> + + extern char **environ; + + int main() { + char* path = strdup("./non-existent"); + char *argv[[2]]; + argv[[0]] = path; + argv[[1]] = 0; + return posix_spawn(0, path, 0, 0, argv, environ); + }]])], + [make_cv_synchronous_posix_spawn=no], + [make_cv_synchronous_posix_spawn=yes], + [make_cv_synchronous_posix_spawn="no (cross-compiling)"])])) + +AS_CASE([/$user_posix_spawn/$make_cv_posix_spawn/$make_cv_synchronous_posix_spawn/], [*/no/*], [make_cv_posix_spawn=no], [AC_DEFINE(USE_POSIX_SPAWN, 1, [Define to 1 to use posix_spawn().]) ]) |