ubsan: alpha-coff: signed integer overflow

[deliverable/binutils-gdb.git] / config / isl.m4

diff --git a/config/isl.m4 b/config/isl.m4
index ba3fa1b7f83c2d2c2d8eb0038ec0426c1fda343f..bbb973e023b1dd2c5e610a98ceb2d7cfcff70229 100644 (file)
--- a/config/isl.m4
+++ b/config/isl.m4
@@ -19,23 +19,23 @@
 
 # ISL_INIT_FLAGS ()
 # -------------------------
-# Provide configure switches for ISL support.
+# Provide configure switches for isl support.
 # Initialize isllibs/islinc according to the user input.
 AC_DEFUN([ISL_INIT_FLAGS],
 [
   AC_ARG_WITH([isl-include],
     [AS_HELP_STRING(
       [--with-isl-include=PATH],
-      [Specify directory for installed ISL include files])])
+      [Specify directory for installed isl include files])])
   AC_ARG_WITH([isl-lib],
     [AS_HELP_STRING(
       [--with-isl-lib=PATH],
-      [Specify the directory for the installed ISL library])])
+      [Specify the directory for the installed isl library])])
 
   AC_ARG_ENABLE(isl-version-check,
     [AS_HELP_STRING(
       [--disable-isl-version-check],
-      [disable check for ISL version])],
+      [disable check for isl version])],
     ENABLE_ISL_CHECK=$enableval,
     ENABLE_ISL_CHECK=yes)
   
@@ -58,21 +58,24 @@ AC_DEFUN([ISL_INIT_FLAGS],
   if test "x${with_isl_lib}" != x; then
     isllibs="-L$with_isl_lib"
   fi
-  dnl If no --with-isl flag was specified and there is in-tree ISL
+  dnl If no --with-isl flag was specified and there is in-tree isl
   dnl source, set up flags to use that and skip any version tests
-  dnl as we cannot run them before building ISL.
+  dnl as we cannot run them before building isl.
   if test "x${islinc}" = x && test "x${isllibs}" = x \
      && test -d ${srcdir}/isl; then
     isllibs='-L$$r/$(HOST_SUBDIR)/isl/'"$lt_cv_objdir"' '
     islinc='-I$$r/$(HOST_SUBDIR)/isl/include -I$$s/isl/include'
     ENABLE_ISL_CHECK=no
+    AC_MSG_WARN([using in-tree isl, disabling version check])
   fi
+
+  isllibs="${isllibs} -lisl"
 ]
 )
 
 # ISL_REQUESTED (ACTION-IF-REQUESTED, ACTION-IF-NOT)
 # ----------------------------------------------------
-# Provide actions for failed ISL detection.
+# Provide actions for failed isl detection.
 AC_DEFUN([ISL_REQUESTED],
 [
   AC_REQUIRE([ISL_INIT_FLAGS])
@@ -89,20 +92,9 @@ AC_DEFUN([ISL_REQUESTED],
 ]
 )
 
-# _ISL_CHECK_CT_PROG(MAJOR, MINOR)
-# --------------------------------------------
-# Helper for verifying ISL compile time version.
-m4_define([_ISL_CHECK_CT_PROG],[AC_LANG_PROGRAM(
-  [#include <isl/version.h>
-   #include <string.h>],
-  [if (strncmp (isl_version (), "isl-$1.$2", strlen ("isl-$1.$2")) != 0)
-     return 1;
-   ])])
-
-# ISL_CHECK_VERSION ISL_CHECK_VERSION (MAJOR, MINOR)
+# ISL_CHECK_VERSION ISL_CHECK_VERSION ()
 # ----------------------------------------------------------------
-# Test the found ISL to be exact of version MAJOR.MINOR and at least
-# REVISION.
+# Test whether isl contains functionality added to the minimum expected version.
 AC_DEFUN([ISL_CHECK_VERSION],
 [
   if test "${ENABLE_ISL_CHECK}" = yes ; then
@@ -111,16 +103,19 @@ AC_DEFUN([ISL_CHECK_VERSION],
     _isl_saved_LIBS=$LIBS
 
     CFLAGS="${_isl_saved_CFLAGS} ${islinc} ${gmpinc}"
-    LDFLAGS="${_isl_saved_LDFLAGS} ${isllibs}"
-    LIBS="${_isl_saved_LIBS} -lisl"
-    echo $CFLAGS
+    LDFLAGS="${_isl_saved_LDFLAGS} ${isllibs} ${gmplibs}"
+    LIBS="${_isl_saved_LIBS} -lisl -lgmp"
+
+    AC_MSG_CHECKING([for isl 0.15 or later])
+    AC_TRY_LINK([#include <isl/schedule.h>],
+                [isl_options_set_schedule_serialize_sccs (NULL, 0);],
+                [gcc_cv_isl=yes],
+                [gcc_cv_isl=no])
+    AC_MSG_RESULT([$gcc_cv_isl])
 
-    AC_CACHE_CHECK([for version $1.$2 of ISL],
-      [gcc_cv_isl],
-      [AC_RUN_IFELSE([_ISL_CHECK_CT_PROG($1,$2)],
-       [gcc_cv_isl=yes],
-       [gcc_cv_isl=no],
-       [gcc_cv_isl=yes])])
+    if test "${gcc_cv_isl}" = no ; then
+      AC_MSG_RESULT([required isl version is 0.15 or later])
+    fi
 
     CFLAGS=$_isl_saved_CFLAGS
     LDFLAGS=$_isl_saved_LDFLAGS