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-rw-r--r--Build/source/texk/dvipng/dvipng.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/Build/source/texk/dvipng/dvipng.h b/Build/source/texk/dvipng/dvipng.h
index a8049e6f0fc..fec8bf5f0fd 100644
--- a/Build/source/texk/dvipng/dvipng.h
+++ b/Build/source/texk/dvipng/dvipng.h
@@ -137,8 +137,10 @@ typedef int32_t dviunits;
/* integer round to the nearest number, not towards zero */
#define PIXROUND(num,den) ((num)>0 ? ((num)+(den)/2)/(den) : -(((den)/2-(num))/(den)))
-#if HAVE_ALLOCA_H
+#ifdef HAVE_ALLOCA_H
# include <alloca.h>
+#elif defined _AIX
+# define alloca _alloca
#endif
#define TEMPSTR(s,a) { char* tmp=a; \
if (tmp!=NULL) {\