Initial checkin for VOLK - Vector-Optimized Library of Kernels. This is a new SIMD library.

It currently stands by itself under the GNU Radio tree and can be used separately. We will integrate the build process into GNU Raio and start building off of its functionality over time.

1 files changed, 89 insertions, 0 deletions

diff --git a/volk/config/mkstemp.m4 b/volk/config/mkstemp.m4
new file mode 100644
index 000000000..4af0f0a9b
--- /dev/null
+++ b/volk/config/mkstemp.m4
@@ -0,0 +1,89 @@
+#serial 4
+
+# On some hosts (e.g., HP-UX 10.20, SunOS 4.1.4, Solaris 2.5.1), mkstemp has a
+# silly limit that it can create no more than 26 files from a given template.
+# Other systems lack mkstemp altogether.
+# On OSF1/Tru64 V4.0F, the system-provided mkstemp function can create
+# only 32 files per process.
+# On systems like the above, arrange to use the replacement function.
+AC_DEFUN([UTILS_FUNC_MKSTEMP],
+[dnl
+  AC_REPLACE_FUNCS(mkstemp)
+  if test $ac_cv_func_mkstemp = no; then
+    utils_cv_func_mkstemp_limitations=yes
+  else
+    AC_CACHE_CHECK([for mkstemp limitations],
+      utils_cv_func_mkstemp_limitations,
+      [
+	AC_TRY_RUN([
+#         include <stdlib.h>
+	  int main ()
+	  {
+	    int i;
+	    for (i = 0; i < 70; i++)
+	      {
+		char template[] = "conftestXXXXXX";
+		int fd = mkstemp (template);
+		if (fd == -1)
+		  exit (1);
+		close (fd);
+	      }
+	    exit (0);
+	  }
+	  ],
+	utils_cv_func_mkstemp_limitations=no,
+	utils_cv_func_mkstemp_limitations=yes,
+	utils_cv_func_mkstemp_limitations=yes
+	)
+      ]
+    )
+  fi
+
+  if test $utils_cv_func_mkstemp_limitations = yes; then
+    AC_LIBOBJ(mkstemp)
+    AC_LIBOBJ(tempname)
+    AC_DEFINE(mkstemp, rpl_mkstemp,
+      [Define to rpl_mkstemp if the replacement function should be used.])
+    gl_PREREQ_MKSTEMP
+    jm_PREREQ_TEMPNAME
+  fi
+])
+
+# Prerequisites of lib/mkstemp.c.
+AC_DEFUN([gl_PREREQ_MKSTEMP],
+[
+  AH_BOTTOM(
+  [
+  #ifndef HAVE_MKSTEMP
+  #ifdef  __cplusplus
+  extern "C" {
+  #endif
+  int rpl_mkstemp (char *templ);
+  #ifdef  __cplusplus
+  }
+  #endif
+  #endif
+  ])
+])
+
+# Prerequisites of lib/tempname.c.
+AC_DEFUN([jm_PREREQ_TEMPNAME],
+[
+  AC_REQUIRE([AC_HEADER_STAT])
+  AC_CHECK_HEADERS_ONCE(fcntl.h sys/time.h unistd.h)
+  AC_CHECK_HEADERS(stdint.h)
+  AC_CHECK_FUNCS(__secure_getenv gettimeofday lstat)
+  AC_CHECK_DECLS_ONCE(getenv)
+  # AC_REQUIRE([jm_AC_TYPE_UINTMAX_T])
+
+  dnl Under Win32, mkdir prototype in io.h has only one arg
+  AC_MSG_CHECKING(whether mkdir accepts only one arg)
+  AC_TRY_COMPILE([#include <sys/types.h>
+       #include <sys/stat.h>
+       #include <fcntl.h>], [
+       mkdir("")
+  ], [ AC_MSG_RESULT(yes)
+     AC_DEFINE(MKDIR_TAKES_ONE_ARG,[],[Define if mkdir accepts only one arg]) ],
+   [ AC_MSG_RESULT(no)
+     ])
+])