From fa0606a36c16548c42f3a58e2d74560aaba67dd5 Mon Sep 17 00:00:00 2001
From: Claudio Scordino <claudio@evidence.eu.com>
Date: Tue, 18 Dec 2018 13:51:41 +0100
Subject: [PATCH] Avoid defining pthread data when EC_MAX_MAPT=1

No need to define pthread data if the stack is single-threaded.
Rationale: non-POSIX OSs do not have pthread support; this way they
can support single-thread SOEM.
---
 soem/ethercatconfig.c | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/soem/ethercatconfig.c b/soem/ethercatconfig.c
index f05eabc..1f68db0 100644
--- a/soem/ethercatconfig.c
+++ b/soem/ethercatconfig.c
@@ -32,7 +32,9 @@ typedef struct
 } ecx_mapt_t;
 
 ecx_mapt_t ecx_mapt[EC_MAX_MAPT];
+#if EC_MAX_MAPT > 1
 OSAL_THREAD_HANDLE ecx_threadh[EC_MAX_MAPT];
+#endif
 
 #ifdef EC_VER1
 /** Slave configuration structure */
@@ -785,6 +787,7 @@ static int ecx_map_sm(ecx_contextt *context, uint16 slave)
    return 1;
 }
 
+#if EC_MAX_MAPT > 1
 OSAL_THREAD_FUNC ecx_mapper_thread(void *param)
 {
    ecx_mapt_t *maptp;
@@ -810,6 +813,7 @@ static int ecx_find_mapt(void)
       return -1;
    }
 }
+#endif
 
 static int ecx_get_threadcount(void)
 {
@@ -836,13 +840,7 @@ static void ecx_config_find_mappings(ecx_contextt *context, uint8 group)
    {
       if (!group || (group == context->slavelist[slave].group))
       {
-         if (EC_MAX_MAPT <= 1)
-         {
-            /* serialised version */
-            ecx_map_coe_soe(context, slave, 0);
-         }
-         else
-         {
+#if EC_MAX_MAPT > 1
             /* multi-threaded version */
             while ((thrn = ecx_find_mapt()) < 0)
             {
@@ -854,7 +852,10 @@ static void ecx_config_find_mappings(ecx_contextt *context, uint8 group)
             ecx_mapt[thrn].running = 1;
             osal_thread_create(&(ecx_threadh[thrn]), 128000,
                &ecx_mapper_thread, &(ecx_mapt[thrn]));
-         }
+#else
+            /* serialised version */
+            ecx_map_coe_soe(context, slave, 0);
+#endif
       }
    }
    /* wait for all threads to finish */