Allow user to override configure's color index setting

This command line parameter is not listed in the "configure --help" output
as it is really intended for our use, and not generally by end users.

To build with 32 bit colour indices, issue:
./configure --with-large_color_index=0

to build with 64 bit color indices:
./configure --with-large_color_index=1

This works for both Ghostscript and GhostPDL builds.

The only "wrinkle" is that Ghostscript default to:
"--with-large_color_index=1" (so 64 bit indices)

whilst GhostPDL defaults to:
 "--with-large_color_index=0" (so 32 bit indices)

This retains the previous default settings.

No cluster differences.

1 files changed, 59 insertions, 0 deletions

diff --git a/configure.ac b/configure.ac
index 8c28b6643..d327d7ca2 100644
--- a/configure.ac
+++ b/configure.ac
@@ -197,7 +197,66 @@ AC_SUBST(FAPIUFST_MAK)
 
 AC_SUBST(FT_BRIDGE)
 
+dnl --------------------------------------------------
+dnl Should we use 64 bit color index
+dnl --------------------------------------------------
+large_color_index=0
+
+AC_ARG_WITH([large_color_index],, large_color_index="$with_large_color_index")
+
+if test x"$large_color_index" != "x0"; then
+
+  dnl try to find a 64 bit type for devicen color index
+  color_ind_type="none"
+   AC_CHECK_SIZEOF(unsigned long int)
+   if test $ac_cv_sizeof_unsigned_long_int = 8; then
+          color_ind_type="unsigned long int"
+   else
+    AC_CHECK_SIZEOF(unsigned long long)
+    if test $ac_cv_sizeof_unsigned_long_long = 8; then
+          color_ind_type="unsigned long long"
+    else
+     AC_CHECK_SIZEOF(unsigned __int64)
+     if test $ac_cv_sizeof_unsigned___int64 = 8; then
+          color_ind_type="unsigned __int64"
+     else
+      AC_CHECK_SIZEOF(u_int64_t)
+      if test $ac_cv_sizeof_u_int64_t = 8; then
+          color_ind_type="u_int64_t"
+      fi
+     fi
+    fi
+   fi
+else
+  dnl try to find a 32 bit type for devicen color index
+  color_ind_type="none"
+   AC_CHECK_SIZEOF(unsigned long int)
+   if test $ac_cv_sizeof_unsigned_long_int = 4; then
+          color_ind_type="unsigned long int"
+   else
+    AC_CHECK_SIZEOF(unsigned int)
+    if test $ac_cv_sizeof_unsigned_int = 4; then
+          color_ind_type="unsigned int"
+    else
+     AC_CHECK_SIZEOF(unsigned __int32)
+     if test $ac_cv_sizeof_unsigned___int32 = 4; then
+          color_ind_type="unsigned __int32"
+     else
+      AC_CHECK_SIZEOF(u_int32_t)
+      if test $ac_cv_sizeof_u_int32_t = 4; then
+          color_ind_type="u_int32_t"
+      fi
+     fi
+    fi
+   fi
+fi
 
+dnl if a suitable type wasn't found above, we fall back to
+dnl a default in genarch.
+if test "$color_ind_type" != "none"; then
+        COLOR_INDEX_TYPE_DEFINE="-DGX_COLOR_INDEX_TYPE=\"$color_ind_type\""
+fi
+AC_SUBST(COLOR_INDEX_TYPE_DEFINE)
 
 dnl --------------------------------------------------
 dnl check for big/little endian for LCMS