Find the C++ compiler template repository directory so that we can

"make clean" properly (if the C++ compiler uses one)

This commit was SVN r23.

config/cxx_find_template_repository.m4

@@ -0,0 +1,145 @@
+dnl -*- shell-script -*-
+dnl
+dnl $HEADER$
+dnl
+dnl $Id: cxx_find_template_repository.m4,v 1.1 2004/01/07 07:39:52 jsquyres Exp $
+dnl
+
+define([LAM_CXX_FIND_TEMPLATE_REPOSITORY],[
+#
+# Arguments: None
+#
+# Dependencies: None
+#
+# See if the compiler makes template repository directories
+# Warning: this is a really screwy example! -JMS
+#
+# Sets LAM_CXX_TEMPLATE_REPOSITORY to the template repository, or blank.
+# Must call AC_SUBST manually
+#
+
+# Find the repository
+AC_MSG_CHECKING([for C++ template repository directory])
+mkdir conf_tmp_$$
+cd conf_tmp_$$
+cat > conftest.h <<EOF
+template <class T>
+class foo {
+public:
+  foo(T yow) : data(yow) { yow.member(3); };
+  void member(int i);
+private:
+  T data;
+};
+
+class bar {
+public:
+  bar(int i) { data = i; };
+  void member(int j) { data = data * j; };
+
+private:
+  int data;
+};
+EOF
+
+cat > conftest2.C <<EOF
+#include "conftest.h"
+
+void
+some_other_function(void)
+{
+  foo<bar> var1(6);
+  foo< foo<bar> > var2(var1);
+}
+EOF
+
+cat > conftest1.C <<EOF
+#include "conftest.h"
+
+void some_other_function(void);
+
+template <class T>
+void
+foo<T>::member(int i)
+{
+  i += 2;
+}
+
+int
+main(int argc, char *argv[])
+{
+  foo<bar> var1(6);
+  foo< foo<bar> > var2(var1);
+
+  some_other_function();
+  return 0;
+}
+EOF
+
+lam_template_failed=
+echo configure:__oline__: $CXX $CXXFLAGS -c conftest1.C >&5
+$CXX $CXXFLAGS -c conftest1.C >&5 2>&5
+if test ! -f conftest1.o ; then
+    AC_MSG_RESULT([templates not supported?])
+    echo configure:__oline__: here is the program that failed: >&5
+    cat conftest1.C >&5
+    echo configure:__oline__: here is conftest.h: >&5
+    cat conftest.h >&5
+    lam_template_failed=1
+else
+    echo configure:__oline__: $CXX $CXXFLAGS -c conftest2.C >&5
+    $CXX $CXXFLAGS -c conftest2.C >&5 2>&5
+    if test ! -f conftest2.o ; then
+	AC_MSG_RESULT([unknown error])
+	echo configure:__oline__: here is the program that failed: >&5
+	cat conftest2.C >&5
+	echo configure:__oline__: here is conftest.h: >&5
+	cat conftest.h >&5
+    else
+	rm -rf conftest*
+
+	for lam_file in `ls`
+	do
+	    if test "$lam_file" != "." -a "$lam_file" != ".."; then
+		# Is it a directory?
+		if test -d "$lam_file"; then
+		    lam_template_dir="$lam_file $lam_template_dir"
+		    
+		# Or is it a file?
+		else
+		    name="`echo $lam_file | cut -d. -f1`"
+		    
+		    temp_mask=
+		    if test "$name" = "main" -o "$name" = "other"; then
+			temp_mask="`echo $lam_file | cut -d. -f2`"
+			if test "$lam_template_filemask" = ""; then
+			lam_template_filemask="$temp_mask";
+			elif test "`echo $lam_template_filemask | grep $temp_mask`" = ""; then
+			lam_template_filemask="$lam_template_filemask $temp_mask"
+			fi
+		    fi
+		fi
+	    fi
+	done
+	if test "$lam_template_filemask" != ""; then
+	    temp_mask=
+	    for mask in $lam_template_filemask
+	    do
+		temp_mask="*.$mask $temp_mask"
+	    done
+	    lam_template_filemask=$temp_mask
+	fi
+    fi
+fi
+LAM_CXX_TEMPLATE_REPOSITORY="$lam_template_dir $lam_template_filemask"
+
+if test "`echo $LAM_CXX_TEMPLATE_REPOSITORY`" != ""; then
+    AC_MSG_RESULT([$LAM_CXX_TEMPLATE_REPOSITORY])
+else
+    AC_MSG_RESULT([not used])
+fi
+cd ..
+rm -rf conf_tmp_$$
+
+# Clean up
+unset lam_file lam_template_failed lam_template_dir])dnl