Don't generate files.h at build-time using an execution test.

The *_LOC variables are never used in the build itself, but only in the
built code; this means that they don't need to be known to ./configure at
all.

Since the previous method made acct not cross-compilable at all, this is
much preferred.

Author:  Diego Elio Pettenò <flameeyes@gmail.com>
Upstream: https://savannah.gnu.org/patch/?7473

--- a/Makefile.am
+++ b/Makefile.am
@@ -69,11 +69,6 @@ SYS_LASTCOMM = @SYS_LASTCOMM@
 SYS_AC = @SYS_AC@
 SYS_SA = @SYS_SA@
 
-WTMP_FILE_LOC = @WTMP_FILE_LOC@
-ACCT_FILE_LOC = @ACCT_FILE_LOC@
-SAVACCT_FILE_LOC = @SAVACCT_FILE_LOC@
-USRACCT_FILE_LOC = @USRACCT_FILE_LOC@
-
 compare-ac: ac
 	@echo
 	@echo "Running tests for ac"
--- a/configure.ac
+++ b/configure.ac
@@ -229,97 +229,6 @@ AC_CHECK_HEADER(sys/acct.h,
 		AC_EGREP_HEADER([comp_t],[sys/acct.h],[AC_DEFINE(HAVE_COMP_T, 1, Define if <sys/acct.h> uses the COMP_T type.)])
   ) ]
 )
-dnl
-dnl find out where utmp/pacct are stored
-dnl
-AC_RUN_IFELSE([AC_LANG_PROGRAM([[
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <stdint.h>	/* GNU/kFreeBSD */
-#include <sys/acct.h>
-#include <utmp.h>
-
-#ifndef WTMP_FILE
-#  if defined(__FreeBSD__) || defined (__NetBSD__) || defined(__linux__) \
-        || defined(__FreeBSD_kernel__) || defined(__GLIBC__)
-#    define WTMP_FILE "/var/log/account/wtmp"
-#  else
-#    if defined(sun) || defined(AMIX)
-#      define WTMP_FILE "/var/adm/wtmp"
-#    else
-#      if defined(sgi) || defined(SVR4)
-#        define WTMP_FILE "/usr/adm/wtmp"
-#      else
-#        define WTMP_FILE "/usr/adm/wtmp"
-#      endif
-#    endif
-#  endif
-#endif
-
-#ifndef ACCT_FILE
-#  if defined(__FreeBSD__) || defined(__linux__) \
-        || defined(__FreeBSD_kernel__) || defined(__GLIBC__)
-#    define ACCT_FILE "/var/log/account/pacct"
-#  else
-#    if defined(__NetBSD__)
-#      define ACCT_FILE "/var/log/account/acct"
-#    else
-#      if defined(sun) || defined(AMIX)
-#        define ACCT_FILE "/var/adm/pacct"
-#      else
-#        if defined(sgi) || defined(SVR4) || defined(M_XENIX)
-#          define ACCT_FILE "/usr/adm/pacct"
-#        else
-#          define ACCT_FILE "/usr/adm/acct"
-#        endif
-#      endif
-#    endif
-#  endif
-#endif
-
-#ifndef SAVACCT_FILE
-#  if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__linux__) \
-        || defined(__FreeBSD_kernel__) || defined(__GLIBC__)
-#    define SAVACCT_FILE "/var/log/account/savacct"
-#  else
-#    if defined(sun) || defined(AMIX)
-#      define SAVACCT_FILE "/var/adm/savacct"
-#    else
-#      if defined(sgi) || defined(SVR4)
-#        define SAVACCT_FILE "/usr/adm/savacct"
-#      else
-#        define SAVACCT_FILE "/usr/adm/savacct"
-#      endif
-#    endif
-#  endif
-#endif
-
-#ifndef USRACCT_FILE
-#  if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__linux__) \
-        || defined(__FreeBSD_kernel__) || defined(__GLIBC__)
-#    define USRACCT_FILE "/var/log/account/usracct"
-#  else
-#    if defined(sun) || defined(AMIX)
-#      define USRACCT_FILE "/var/adm/usracct"
-#    else
-#      if defined(sgi) || defined(SVR4)
-#        define USRACCT_FILE "/usr/adm/usracct"
-#      else
-#        define USRACCT_FILE "/usr/adm/usracct"
-#      endif
-#    endif
-#  endif
-#endif
-]], [[
-  FILE *fp;
-  fp = fopen ("locs", "w");
-  fprintf (fp, "WTMP_FILE_LOC=%s\n", WTMP_FILE);
-  fprintf (fp, "ACCT_FILE_LOC=%s\n", ACCT_FILE);
-  fprintf (fp, "SAVACCT_FILE_LOC=%s\n", SAVACCT_FILE);
-  fprintf (fp, "USRACCT_FILE_LOC=%s\n", USRACCT_FILE);
-  fclose (fp);
-]])],[. ./locs; rm locs],[echo "Error -- could not locate your wtmp and acct files."; exit 1],[echo "Sorry -- you cannot cross-compile this package (FIXME)."; exit 1 ])
 
 dnl types
 AC_TYPE_PID_T dnl for sys/acct.h
@@ -363,12 +272,6 @@ AC_SUBST(ACCTON_MAN)
 AC_SUBST(LASTCOMM_MAN)
 AC_SUBST(SA_MAN)
 
-dnl Substitutions for file locations
-AC_SUBST(WTMP_FILE_LOC)
-AC_SUBST(ACCT_FILE_LOC)
-AC_SUBST(SAVACCT_FILE_LOC)
-AC_SUBST(USRACCT_FILE_LOC)
-
 dnl Dump the makefiles and etc.
 AC_CONFIG_FILES([Makefile lib/Makefile files.h version.h])
 AC_OUTPUT
--- a/files.h.in
+++ b/files.h.in
@@ -30,10 +30,86 @@
 
 #include <utmp.h>
 
-#define WTMP_FILE_LOC "@WTMP_FILE_LOC@"
-#define ACCT_FILE_LOC "@ACCT_FILE_LOC@"
-#define SAVACCT_FILE_LOC "@SAVACCT_FILE_LOC@"
-#define USRACCT_FILE_LOC "@USRACCT_FILE_LOC@"
+#ifndef WTMP_FILE
+#  if defined(__FreeBSD__) || defined (__NetBSD__) || defined(__linux__) \
+        || defined(__FreeBSD_kernel__) || defined(__GLIBC__)
+#    define WTMP_FILE "/var/log/wtmp"
+#  else
+#    if defined(sun) || defined(AMIX)
+#      define WTMP_FILE "/var/adm/wtmp"
+#    else
+#      if defined(sgi) || defined(SVR4)
+#        define WTMP_FILE "/usr/adm/wtmp"
+#      else
+#        define WTMP_FILE "/usr/adm/wtmp"
+#      endif
+#    endif
+#  endif
+#endif
+
+#ifndef ACCT_FILE
+#  if defined(__FreeBSD__) || defined(__linux__) \
+        || defined(__FreeBSD_kernel__) || defined(__GLIBC__)
+#    define ACCT_FILE "/var/account/pacct"
+#  else
+#    if defined(__NetBSD__)
+#      define ACCT_FILE "/var/log/account/acct"
+#    else
+#      if defined(sun) || defined(AMIX)
+#        define ACCT_FILE "/var/adm/pacct"
+#      else
+#        if defined(sgi) || defined(SVR4) || defined(M_XENIX)
+#          define ACCT_FILE "/usr/adm/pacct"
+#        else
+#          define ACCT_FILE "/usr/adm/acct"
+#        endif
+#      endif
+#    endif
+#  endif
+#endif
+
+#ifndef SAVACCT_FILE
+#  if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__linux__) \
+        || defined(__FreeBSD_kernel__) || defined(__GLIBC__)
+#    define SAVACCT_FILE "/var/account/savacct"
+#  else
+#    if defined(sun) || defined(AMIX)
+#      define SAVACCT_FILE "/var/adm/savacct"
+#    else
+#      if defined(sgi) || defined(SVR4)
+#        define SAVACCT_FILE "/usr/adm/savacct"
+#      else
+#        define SAVACCT_FILE "/usr/adm/savacct"
+#      endif
+#    endif
+#  endif
+#endif
+
+#ifndef USRACCT_FILE
+#  if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__linux__) \
+        || defined(__FreeBSD_kernel__) || defined(__GLIBC__)
+#    define USRACCT_FILE "/var/account/usracct"
+#  else
+#    if defined(sun) || defined(AMIX)
+#      define USRACCT_FILE "/var/adm/usracct"
+#    else
+#      if defined(sgi) || defined(SVR4)
+#        define USRACCT_FILE "/usr/adm/usracct"
+#      else
+#        define USRACCT_FILE "/usr/adm/usracct"
+#      endif
+#    endif
+#  endif
+#endif
+
+#if !defined(WTMP_FILE) || !defined(ACCT_FILE) || !defined(SAVACCT_FILE) \
+    || !defined(USRACCT_FILE)
+#error Could not locate your wtmp and acct files.
+#endif
+#define WTMP_FILE_LOC WTMP_FILE
+#define ACCT_FILE_LOC ACCT_FILE
+#define SAVACCT_FILE_LOC SAVACCT_FILE
+#define USRACCT_FILE_LOC USRACCT_FILE

 /* Workaround for a kernel includes problem */
 #if defined(__linux__) && defined(__alpha__)