* configure.ac: Delete config.cache files in sub-directories when

[pf3gnuchains/gcc-fork.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index 4ea3f25..371b6e2 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -1343,18 +1343,27 @@ if test -d ${srcdir}/gcc && test "x$have_gmp" = xno; then
   have_gmp=yes
   saved_CFLAGS="$CFLAGS"
   CFLAGS="$CFLAGS $gmpinc"
-  # Check GMP actually works
-  AC_MSG_CHECKING([for correct version of gmp.h])
+  # Check for the recommended and required versions of GMP.
+  AC_MSG_CHECKING([for the correct version of gmp.h])
   AC_TRY_COMPILE([#include "gmp.h"],[
-  #if __GNU_MP_VERSION < 4 || (__GNU_MP_VERSION == 4 && __GNU_MP_VERSION_MINOR < 2)
+  #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
+  #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
+  #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,2,0)
   choke me
   #endif
-  ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([no]); have_gmp=no])
+  ], AC_TRY_COMPILE([#include <gmp.h>],[
+  #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
+  #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
+  #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,3,2)
+  choke me
+  #endif
+  ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])]),
+   [AC_MSG_RESULT([no]); have_gmp=no])
 
   # If we have GMP, check the MPFR version.
   if test x"$have_gmp" = xyes; then
-    dnl MPFR 2.3.1 is acceptable, but MPFR 2.3.2 is better.
-    AC_MSG_CHECKING([for correct version of mpfr.h])
+    # Check for the recommended and required versions of MPFR.
+    AC_MSG_CHECKING([for the correct version of mpfr.h])
     AC_TRY_COMPILE([#include <gmp.h>
     #include <mpfr.h>],[
     #if MPFR_VERSION < MPFR_VERSION_NUM(2,3,1)
@@ -1362,7 +1371,7 @@ if test -d ${srcdir}/gcc && test "x$have_gmp" = xno; then
     #endif
     ], AC_TRY_COMPILE([#include <gmp.h>
     #include <mpfr.h>],[
-    #if MPFR_VERSION < MPFR_VERSION_NUM(2,3,2)
+    #if MPFR_VERSION < MPFR_VERSION_NUM(2,4,2)
     choke me
     #endif
     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])]),
@@ -1371,12 +1380,18 @@ if test -d ${srcdir}/gcc && test "x$have_gmp" = xno; then
 
   # Check for the MPC header version.
   if test x"$have_gmp" = xyes ; then
+    # Check for the recommended and required versions of MPC.
     AC_MSG_CHECKING([for the correct version of mpc.h])
     AC_TRY_COMPILE([#include <mpc.h>],[
-    #if MPC_VERSION < MPC_VERSION_NUM (0,8,0)
+    #if MPC_VERSION < MPC_VERSION_NUM(0,8,0)
     choke me
     #endif
-    ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([no]); have_gmp=no])
+    ], AC_TRY_COMPILE([#include <mpc.h>],[
+    #if MPC_VERSION < MPC_VERSION_NUM(0,8,1)
+    choke me
+    #endif
+    ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])]),
+     [AC_MSG_RESULT([no]); have_gmp=no])
   fi
 
   # Now check the MPFR library.
@@ -1408,8 +1423,10 @@ if test -d ${srcdir}/gcc && test "x$have_gmp" = xno; then
 
   CFLAGS="$saved_CFLAGS"
 
+# The library versions listed in the error message below should match
+# the HARD-minimums enforced above.
   if test x$have_gmp != xyes; then
-    AC_MSG_ERROR([Building GCC requires GMP 4.2+, MPFR 2.3.2+ and MPC 0.8.0+.
+    AC_MSG_ERROR([Building GCC requires GMP 4.2+, MPFR 2.3.1+ and MPC 0.8.0+.
 Try the --with-gmp, --with-mpfr and/or --with-mpc options to specify
 their locations.  Source code for these libraries can be found at
 their respective hosting sites as well as at
@@ -2693,6 +2710,12 @@ for module in ${build_configdirs} ; do
     echo 1>&2 "*** removing ${build_subdir}/${module}/Makefile to force reconfigure"
     rm -f ${build_subdir}/${module}/Makefile
   fi
+  # PR 11238: Also remove config.cache files.
+  if test -z "${no_recursion}" \
+     && test -f ${build_subdir}/${module}/config.cache; then
+    echo 1>&2 "*** removing ${build_subdir}/${module}/config.cache to allow reconfigure"
+    rm -f ${build_subdir}/${module}/config.cache
+  fi
   extrasub_build="$extrasub_build
 /^@if build-$module\$/d
 /^@endif build-$module\$/d
@@ -2708,6 +2731,11 @@ for module in ${configdirs} ; do
        rm -f ${file}
       fi
     done
+    # PR 11238: Also remove config.cache files.
+    if test -f ${module}/config.cache; then
+      echo 1>&2 "*** removing ${module}/config.cache to allow reconfigure"
+      rm -f ${module}/config.cache
+    fi
   fi
   extrasub_host="$extrasub_host
 /^@if $module\$/d
@@ -2722,6 +2750,12 @@ for module in ${target_configdirs} ; do
     echo 1>&2 "*** removing ${target_subdir}/${module}/Makefile to force reconfigure"
     rm -f ${target_subdir}/${module}/Makefile
   fi
+  # PR 11238: Also remove config.cache files.
+  if test -z "${no_recursion}" \
+     && test -f ${target_subdir}/${module}/config.cache; then
+    echo 1>&2 "*** removing ${target_subdir}/${module}/config.cache to allow reconfigure"
+    rm -f ${target_subdir}/${module}/config.cache
+  fi
 
   # We only bootstrap target libraries listed in bootstrap_target_libs.
   case $bootstrap_target_libs in