gentoo-overlay/sci-astronomy/sextractor/files/sextractor-2.19.5-have-mmap.patch

Author: Justin Pryzby <justinpryzby@users.sf.net>
Description: (guess) Use mmap only if it exists.
--- a/src/fits/fitsbody.c
+++ b/src/fits/fitsbody.c
@@ -64,9 +64,12 @@
  ***/
 PIXTYPE	*alloc_body(tabstruct *tab, void (*func)(PIXTYPE *ptr, int npix))
   {
+#ifdef	HAVE_MMAP
    FILE		*file;
    PIXTYPE	*buffer;
-   size_t	npix, size, sizeleft, spoonful;
+   size_t	sizeleft, spoonful;
+#endif
+   size_t	npix, size;
 
   if (!body_ramflag)
     {
@@ -87,7 +90,9 @@
 /* Decide if the data will go in physical memory or on swap-space */
   npix = tab->tabsize/tab->bytepix;
   size = npix*sizeof(PIXTYPE);
+#if !HAVE_MMAP
   if (size < body_ramleft)
+#endif
     {
 /*-- There should be enough RAM left: try to do a malloc() */
     if ((tab->bodybuf = malloc(size)))
@@ -105,6 +110,7 @@
       tab->bodybuf = NULL;
     }
 
+#if HAVE_MMAP
   if (size < body_vramleft)
     {
 /*-- Convert and copy the data to a swap file, and mmap() it */
@@ -144,6 +150,7 @@
       return NULL;
     return (PIXTYPE *)tab->bodybuf;
     }
+#endif
 
 /* If no memory left at all: forget it! */
   return NULL;
@@ -270,8 +277,10 @@
     size = (tab->tabsize/tab->bytepix)*sizeof(PIXTYPE);
     if (tab->swapflag)
       {
+#if HAVE_MMAP
       if (munmap(tab->bodybuf, size))
         warning("Can't unmap ", tab->cat->filename);
+#endif
       tab->swapflag = 0;
       tab->bodybuf = NULL;
       body_vramleft += size;