diff -up ./tests/Makefile.am.orig ./tests/Makefile.am

 --- ./tests/Makefile.am.orig	2009-07-28 16:28:55.377059021 +0300

 +++ ./tests/Makefile.am	2009-07-28 16:31:01.136810734 +0300

 @@ -20,7 +20,7 @@ check_PROGRAMS = tversion tinternals tin

  EXTRA_DIST = tgeneric.c tgeneric_ui.c mpf_compat.h inp_str.data tmul.dat

 -tmul_CPPFLAGS = -DMPFR_SRCDIR=$(srcdir)

 +tmul_CPPFLAGS = -DMPFR_SRCDIR=\"$(srcdir)\"

  LDADD = libfrtests.la $(MPFR_LIBM) $(top_builddir)/libmpfr.la

  INCLUDES = -I$(top_srcdir) -I$(top_builddir)

 diff -up ./tests/tmul.c.orig ./tests/tmul.c

 --- ./tests/tmul.c.orig	2009-07-28 16:29:03.761058919 +0300

 +++ ./tests/tmul.c	2009-07-28 16:30:46.369812215 +0300

 @@ -26,10 +26,8 @@ MA 02110-1301, USA. */

  #include "mpfr-test.h"

  #ifndef MPFR_SRCDIR

 -#define MPFR_SRCDIR .

 +#define MPFR_SRCDIR "."

  #endif

 -#define QUOTE(X) NAME(X)

 -#define NAME(X) #X

  #ifdef CHECK_EXTERNAL

  static int

 @@ -482,10 +480,10 @@ check_regression (void)

    mpfr_inits2 (6177, x, y, z, (mpfr_ptr) 0);

    /* we read long strings from a file since ISO C90 does not support strings of

       length > 509 */

 -  fp = fopen (QUOTE (MPFR_SRCDIR)"/tmul.dat", "r");

 +  fp = fopen (MPFR_SRCDIR "/tmul.dat", "r");

    if (fp == NULL)

      {

 -      fprintf (stderr, "Error, cannot open "QUOTE (MPFR_SRCDIR)"/tmul.dat\n");

 +      fprintf (stderr, "Error, cannot open " MPFR_SRCDIR "/tmul.dat\n");

        exit (1);

      }

    get_string (s, fp);