[Buildroot] word swapping doubles on little endian

[Buildroot] word swapping doubles on little endian

[Christopher Taylor]

For some reason, when I write a double to file I'm getting byte
swapped then word swapped.

double value = 2.048;
printf("%llx", value);
write(&value,sizeof(double), 1, fd);

on a bigendian I'm getting
printf:  4000 624d d2f1 a9fc

on a little endian I'm getting
printf:  d2f1 a9fc 4000 624d
write:  4d62 0040 fca9 f1d2

whereas I would expect on the little endian write:
fca9 f1d2 4d62 0040


any ideas how this is getting screwed up?

-Chris

[Buildroot] bug in ncurses.mk commit on 3/31/08

[Blaine Kubesh]

I was looking into the error:

-----
ln -sf /usr/share/terminfo /$(TARGET_DIR)/usr/lib/terminfo
ln: creating symbolic link `$(TARGET_DIR)/usr/lib/terminfo/terminfo' to
`/usr/share/terminfo': Permission denied
-----

The source of the problem is related to a commit on March 31, 2008.

The first diff line should use $(TARGET_DIR)/usr/share and not the host
system's /usr/share:
-    -cp -dpf $(STAGING_DIR)/usr/lib/terminfo $(TARGET_DIR)/usr/lib/
+    ln -sf $(TARGET_DIR)/usr/share/terminfo $(TARGET_DIR)/usr/lib/terminfo

====

--- trunk/buildroot/package/ncurses/ncurses.mk    2008/03/26 03:28:09
21494
+++ trunk/buildroot/package/ncurses/ncurses.mk    2008/03/31 14:44:32
21596
@@ -104,7 +104,7 @@
 
 $(TARGET_DIR)/lib/libncurses.so.$(NCURSES_VERSION):
$(STAGING_DIR)/lib/libncurses.so.$(NCURSES_VERSION)
     cp -dpf $(NCURSES_DIR)/lib/libncurses.so* $(TARGET_DIR)/lib/
-    -cp -dpf $(STAGING_DIR)/usr/lib/terminfo $(TARGET_DIR)/usr/lib/
+    ln -sf /usr/share/terminfo $(TARGET_DIR)/usr/lib/terminfo
     mkdir -p $(TARGET_DIR)/usr/share/terminfo/x
     cp -dpf $(STAGING_DIR)/usr/share/terminfo/x/xterm
$(TARGET_DIR)/usr/share/terminfo/x
     cp -dpf $(STAGING_DIR)/usr/share/terminfo/x/xterm-color
$(TARGET_DIR)/usr/share/terminfo/x
@@ -129,8 +129,7 @@
     cp -dpf $(NCURSES_DIR)/include/unctrl.h $(TARGET_DIR)/usr/include/
     cp -dpf $(NCURSES_DIR)/include/termcap.h $(TARGET_DIR)/usr/include/
     cp -dpf $(NCURSES_DIR)/lib/libncurses.a $(TARGET_DIR)/usr/lib/
-    rm -f $(TARGET_DIR)/usr/lib/terminfo
-    (cd $(TARGET_DIR)/usr/lib; ln -fs ../share/terminfo; \
+    (cd $(TARGET_DIR)/usr/lib; \
      ln -fs libncurses.a libcurses.a; \
      ln -fs libncurses.a libtermcap.a; \
     )
@@ -151,6 +150,7 @@
     rm -f $(STAGING_DIR)/usr/lib/libncurses.so*
$(TARGET_DIR)/usr/lib/libncurses.so*
     rm -rf $(STAGING_DIR)/usr/share/tabset $(TARGET_DIR)/usr/share/tabset
     rm -rf $(STAGING_DIR)/usr/share/terminfo
$(TARGET_DIR)/usr/share/terminfo
+    rm -rf $(TARGET_DIR)/usr/lib/terminfo
     -$(MAKE) -C $(NCURSES_DIR) clean
 
 ncurses-dirclean:
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