diff options
Diffstat (limited to 'configure.in')
| -rw-r--r-- | configure.in | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/configure.in b/configure.in index 84aec14725..4da41df606 100644 --- a/configure.in +++ b/configure.in @@ -1920,6 +1920,7 @@ AC_CHECK_FUNCS(posix_fadvise) AC_CHECK_FUNCS(posix_memalign) AC_CHECK_FUNCS(ppoll) AC_CHECK_FUNCS(pread) +AC_CHECK_FUNCS(qsort_r) AC_CHECK_FUNCS(readlink) AC_CHECK_FUNCS(round) AC_CHECK_FUNCS(seekdir) @@ -1980,6 +1981,39 @@ RUBY_CHECK_BUILTIN_FUNC(__builtin_clzll, [__builtin_clzll(0)]) RUBY_CHECK_BUILTIN_FUNC(__builtin_choose_expr, [__builtin_choose_expr(0, 0, 0)]) RUBY_CHECK_BUILTIN_FUNC(__builtin_types_compatible_p, [__builtin_types_compatible_p(int, int)]) +if test "$ac_cv_func_qsort_r" != no; then + AC_CACHE_CHECK(that qsort_r is GNU version, rb_cv_gnu_qsort_r, + [AC_RUN_IFELSE( + [AC_LANG_SOURCE([[ +#include <stdlib.h> + +int unsorted[] = { 4, 3, 2, 1 }; +int sorted[] = { 1, 2, 3, 4 }; + +int +compar(const void *a, const void *b, void *arg) +{ + if (*(int *)arg != 42) exit(1); + return *(int *)a - *(int *)b; +} + +int +main(void) +{ + int arg = 42; + qsort_r(unsorted, 4, sizeof(int), compar, &arg); + if (memcmp(sorted, unsorted, 4) != 0) return 1; + return 0; +} + ]])], + [rb_cv_gnu_qsort_r=yes], + [rb_cv_gnu_qsort_r=no]) + ]) + if test "$rb_cv_gnu_qsort_r" != no; then + AC_DEFINE(HAVE_GNU_QSORT_R, 1) + fi +fi + # Some platform need -lrt for clock_gettime, but the other don't. if test x"$ac_cv_func_clock_gettime" != xyes; then # glibc 2.17 moves clock_* functions from librt to the main C library. |