From 2e6a1f4dfb8d2288a4bf468442b3b375d35cbe28 Mon Sep 17 00:00:00 2001
From: dwarning <dwarning>
Date: Fri, 18 Oct 2024 19:55:19 +0200
Subject: [PATCH] workaround for ftime usage under mingw, still needed as long
 no compatible solution is found

---
 configure.ac            | 13 ++++++++++++-
 src/frontend/resource.c | 15 ++++++++-------
 src/misc/misc_time.c    |  4 ++--
 3 files changed, 22 insertions(+), 10 deletions(-)

diff --git a/configure.ac b/configure.ac
index 87d3a470a..780973b1c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -908,7 +908,18 @@ AC_STRUCT_TM
 AC_STRUCT_TIMEZONE
 AC_CHECK_FUNCS([localtime])
 
-AC_CHECK_FUNCS([gettimeofday times ftime])
+case $host_os in
+    *mingw* | *msys* )
+        AC_CHECK_FUNCS([gettimeofday times])
+        AC_CHECK_LIB([msvcr100], [ftime],
+        [AC_DEFINE([HAVE_FTIME], [1], [Have ftime routines in libmsvcr100])
+         LIBS="$LIBS -lmsvcr100"])
+        ;;
+    *)
+        AC_CHECK_FUNCS([gettimeofday times ftime])
+        ;;
+esac
+
 # Do not use time or getrusage function for CPU time measurement under OpenMP
 if test "x$enable_openmp" = xno; then
     AC_CHECK_FUNCS([time getrusage])
diff --git a/src/frontend/resource.c b/src/frontend/resource.c
index 09e116eb7..b54ee8772 100644
--- a/src/frontend/resource.c
+++ b/src/frontend/resource.c
@@ -182,14 +182,15 @@ printres(char *name)
         total_msec = ((x % hz) * 1000) / hz;
         cpu_elapsed = "CPU";
 #    else
-#      ifdef HAVE_FTIME
-        struct timeb timenow;
-        ftime(&timenow);
-        timediff(&timenow, &timebegin, &total_sec, &total_msec);
-        cpu_elapsed = "elapsed";
-#      else
+#       ifdef HAVE_FTIME
+            struct timeb timenow;
+            struct timeb ftimezero;
+            ftime(&timenow);
+            timediff(&timenow, &ftimezero, &total_sec, &total_msec);
+            cpu_elapsed = "elapsed";
+#       else
 #        define NO_RUDATA
-#      endif
+#       endif
 #    endif
 #  endif
 
diff --git a/src/misc/misc_time.c b/src/misc/misc_time.c
index 39a06dad1..2abd1b511 100644
--- a/src/misc/misc_time.c
+++ b/src/misc/misc_time.c
@@ -80,9 +80,9 @@ void timebegin(void) {
     }
 #else
 #ifdef HAVE_FTIME
-    struct timeb timezero;
+    struct timeb ftimezero;
     void timebegin(void) {
-        ftime(&timezero);
+        ftime(&ftimezero);
     }
 #endif /* FTIME */
 #endif /* TIMES */