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Diffstat (limited to '')
| -rw-r--r-- | build/m4/ax_c_mallopt.m4 | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/build/m4/ax_c_mallopt.m4 b/build/m4/ax_c_mallopt.m4 new file mode 100644 index 00000000..31c4fdc3 --- /dev/null +++ b/build/m4/ax_c_mallopt.m4 @@ -0,0 +1,20 @@ +# AC_C_MALLOPT +# ------------- +# Define HAVE_C_MALLOPT if mallopt() works. +AN_IDENTIFIER([mallopt], [AC_C_MALLOPT]) +AC_DEFUN([AC_C_MALLOPT], +[AC_CACHE_CHECK([for mallopt], ac_cv_c_mallopt, +[AC_LINK_IFELSE( + [AC_LANG_SOURCE( + [[#include <malloc.h> + int main(int argc, char **argv) { + mallopt(M_ARENA_MAX, 1); + } + ]])], + [ac_cv_c_mallopt=yes], + [ac_cv_c_mallopt=no])]) +if test $ac_cv_c_mallopt = yes; then + AC_DEFINE([HAVE_C_MALLOPT], 1, + [Define to 1 if glibc mallopt exists.]) +fi +])# AC_C_MALLOPT |