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-rw-r--r--os-win32.c15
-rw-r--r--osdep.h2
2 files changed, 17 insertions, 0 deletions
diff --git a/os-win32.c b/os-win32.c
index d98fd77c12..dd46bf459d 100644
--- a/os-win32.c
+++ b/os-win32.c
@@ -34,6 +34,21 @@
 #include "qemu-options.h"
 
 /***********************************************************/
+/* Functions missing in mingw */
+
+int setenv(const char *name, const char *value, int overwrite)
+{
+    int result = 0;
+    if (overwrite || !getenv(name)) {
+        size_t length = strlen(name) + strlen(value) + 2;
+        char *string = qemu_malloc(length);
+        snprintf(string, length, "%s=%s", name, value);
+        result = putenv(string);
+    }
+    return result;
+}
+
+/***********************************************************/
 /* Polling handling */
 
 typedef struct PollingEntry {
diff --git a/osdep.h b/osdep.h
index 75b581630f..1cdc7e2e3e 100644
--- a/osdep.h
+++ b/osdep.h
@@ -95,6 +95,8 @@ int qemu_create_pidfile(const char *filename);
 #ifdef _WIN32
 int ffs(int i);
 
+int setenv(const char *name, const char *value, int overwrite);
+
 typedef struct {
     long tv_sec;
     long tv_usec;