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+# Private macros for the kpathsea library.
+# Copyright (C) 1995 - 2009 Karl Berry <tex-live@tug.org>
+#
+# This file is free software; the copyright holder
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 3
+
+# KPSE_CROSS_PATH_PROG(RESULT, CROSS_PROG, NORMAL_PROG)
+# -----------------------------------------------------
+# Find a program when cross-compiling, or use a default when not.
+# RESULT = variable which records the outcome
+# CROSS_PROG = program to look for when cross-compiling
+# NORMAL_PROG = program to use when not cross-compiling
+# Example: KPSE_CROSS_PATH_PROG([TANGLE], [tangle], [./tangle]) sets
+# 'TANGLE' to the program 'tangle' found in PATH when cross-compiling,
+# and to './tangle' if not.
+AC_DEFUN([KPSE_CROSS_PATH_PROG],
+ [if test "x$cross_compiling" = xyes; then
+AC_PATH_PROG([$1], [$2])
+if test -z "${$1}"; then
+ AC_MSG_ERROR([$2 was not found but is required when cross-compiling.
+ Install $2 or set \$$1 to the full pathname.])
+fi
+else
+ $1=$3
+fi
+]) # KPSE_CROSS_PATH_PROG
+
+# KPSE_CROSS_BUILD_VAR(STEM, PROG)
+# --------------------------------
+# Set BUILD$1 to $2 when cross-compiling, to $($1) if not.
+# Example: KPSE_CROSS_BUILD_VAR([CC], [cc]) sets 'BUILDCC' to 'cc'
+# if cross-compiling, and to '$(CC)' if not.
+AC_DEFUN([KPSE_CROSS_BUILD_VAR],
+ [if test "x$cross_compiling" = xyes; then
+ if test -z "${BUILD$1}"; then
+ BUILD$1='$2'
+ fi
+ AC_MSG_RESULT([setting \$BUILD$1 to ${BUILD$1}])
+else
+ if test -n "${BUILD$1}"; then
+ AC_MSG_WARN([\$BUILD$1 set but not cross-compiling.])
+ fi
+ BUILD$1='$($1)'
+fi
+AC_SUBST([BUILD$1])
+]) # KPSE_CROSS_BUILD_VAR
+