1 files changed, 10 insertions, 9 deletions
diff --git a/src/glx/apple/apple_glx_drawable.c b/src/glx/apple/apple_glx_drawable.c
index db283023a63..3f84d560c53 100644
--- a/src/glx/apple/apple_glx_drawable.c
+++ b/src/glx/apple/apple_glx_drawable.c
@@ -32,6 +32,7 @@
 #include <stdlib.h>
 #include <assert.h>
 #include <pthread.h>
+#include <string.h>
 #include "apple_glx.h"
 #include "apple_glx_context.h"
 #include "apple_glx_drawable.h"
@@ -48,8 +49,8 @@ lock_drawables_list(void)
    err = pthread_mutex_lock(&drawables_lock);
 
    if (err) {
-      fprintf(stderr, "pthread_mutex_lock failure in %s: %d\n",
-              __func__, err);
+      fprintf(stderr, "pthread_mutex_lock failure in %s: %s\n",
+              __func__, strerror(err));
       abort();
    }
 }
@@ -62,8 +63,8 @@ unlock_drawables_list(void)
    err = pthread_mutex_unlock(&drawables_lock);
 
    if (err) {
-      fprintf(stderr, "pthread_mutex_unlock failure in %s: %d\n",
-              __func__, err);
+      fprintf(stderr, "pthread_mutex_unlock failure in %s: %s\n",
+              __func__, strerror(err));
       abort();
    }
 }
@@ -95,7 +96,7 @@ drawable_lock(struct apple_glx_drawable *agd)
    err = pthread_mutex_lock(&agd->mutex);
 
    if (err) {
-      fprintf(stderr, "pthread_mutex_lock error: %d\n", err);
+      fprintf(stderr, "pthread_mutex_lock error: %s\n", strerror(err));
       abort();
    }
 }
@@ -108,7 +109,7 @@ drawable_unlock(struct apple_glx_drawable *d)
    err = pthread_mutex_unlock(&d->mutex);
 
    if (err) {
-      fprintf(stderr, "pthread_mutex_unlock error: %d\n", err);
+      fprintf(stderr, "pthread_mutex_unlock error: %s\n", strerror(err));
       abort();
    }
 }
@@ -245,7 +246,7 @@ common_init(Display * dpy, GLXDrawable drawable, struct apple_glx_drawable *d)
    err = pthread_mutexattr_init(&attr);
 
    if (err) {
-      fprintf(stderr, "pthread_mutexattr_init error: %d\n", err);
+      fprintf(stderr, "pthread_mutexattr_init error: %s\n", strerror(err));
       abort();
    }
 
@@ -257,14 +258,14 @@ common_init(Display * dpy, GLXDrawable drawable, struct apple_glx_drawable *d)
    err = pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
 
    if (err) {
-      fprintf(stderr, "error: setting pthread mutex type: %d\n", err);
+      fprintf(stderr, "error: setting pthread mutex type: %s\n", strerror(err));
       abort();
    }
 
    err = pthread_mutex_init(&d->mutex, &attr);
 
    if (err) {
-      fprintf(stderr, "pthread_mutex_init error: %d\n", err);
+      fprintf(stderr, "pthread_mutex_init error: %s\n", strerror(err));
       abort();
    }