gdb: remove unnecessary notification of executable_changed observer

[binutils-gdb.git] / config / acx.m4

diff --git a/config/acx.m4 b/config/acx.m4
index b559c03ebdf2dff5ff0aaf7b1f916dd47a62e806..7efe98aaf960840b39de9d499d04bf82ac08b0d2 100644 (file)
--- a/config/acx.m4
+++ b/config/acx.m4
@@ -235,8 +235,28 @@ fi
 ])
 
 
+dnl ####
+dnl # GCC_BASE_VER
+dnl # Determine GCC version number to use in compiler directories.
+
+AC_DEFUN([GCC_BASE_VER],
+[
+  get_gcc_base_ver="cat"
+  AC_ARG_WITH(gcc-major-version-only,
+  [AS_HELP_STRING([--with-gcc-major-version-only], [use only GCC major number in filesystem paths])],
+  [if test x$with_gcc_major_version_only = xyes ; then
+    changequote(,)dnl
+    get_gcc_base_ver="sed -e 's/^\([0-9]*\).*/\1/'"
+    changequote([,])dnl
+  fi
+  ])
+  AC_SUBST(get_gcc_base_ver)
+])
+
+
 AC_DEFUN([ACX_TOOL_DIRS], [
 AC_REQUIRE([ACX_PATH_SEP])
+AC_REQUIRE([GCC_BASE_VER])
 if test "x$exec_prefix" = xNONE; then
         if test "x$prefix" = xNONE; then
                 gcc_cv_tool_prefix=$ac_default_prefix
@@ -251,7 +271,13 @@ fi
 # case, if there is no compiler in the tree nobody should use
 # AS_FOR_TARGET and LD_FOR_TARGET.
 if test x$host = x$build && test -f $srcdir/gcc/BASE-VER; then
-    gcc_version=`cat $srcdir/gcc/BASE-VER`
+    if test x$with_gcc_major_version_only = xyes ; then
+        changequote(,)dnl
+        gcc_version=`sed -e 's/^\([0-9]*\).*$/\1/' $srcdir/gcc/BASE-VER`
+        changequote([,])dnl
+    else
+        gcc_version=`cat $srcdir/gcc/BASE-VER`
+    fi
     gcc_cv_tool_dirs="$gcc_cv_tool_prefix/libexec/gcc/$target_noncanonical/$gcc_version$PATH_SEPARATOR"
     gcc_cv_tool_dirs="$gcc_cv_tool_dirs$gcc_cv_tool_prefix/libexec/gcc/$target_noncanonical$PATH_SEPARATOR"
     gcc_cv_tool_dirs="$gcc_cv_tool_dirs/usr/lib/gcc/$target_noncanonical/$gcc_version$PATH_SEPARATOR"
@@ -356,9 +382,9 @@ m4_define([AC_CHECK_HEADER],m4_defn([_AC_CHECK_HEADER_OLD]))
 ac_c_preproc_warn_flag=yes])# AC_PROG_CPP_WERROR
 
 # Test for GNAT.
-# We require the gnatbind program, and a compiler driver that
-# understands Ada.  We use the user's CC setting, already found,
-# and possibly add $1 to the command-line parameters.
+# We require the gnatbind & gnatmake programs, as well as a compiler driver
+# that understands Ada.  We use the user's CC setting, already found, and
+# possibly add $1 to the command-line parameters.
 #
 # Sets the shell variable have_gnat to yes or no as appropriate, and
 # substitutes GNATBIND and GNATMAKE.
@@ -367,9 +393,13 @@ AC_DEFUN([ACX_PROG_GNAT],
 AC_REQUIRE([AC_PROG_CC])
 AC_CHECK_TOOL(GNATBIND, gnatbind, no)
 AC_CHECK_TOOL(GNATMAKE, gnatmake, no)
-AC_CACHE_CHECK([whether compiler driver understands Ada],
+AC_CACHE_CHECK([whether compiler driver understands Ada and is recent enough],
                 acx_cv_cc_gcc_supports_ada,
 [cat >conftest.adb <<EOF
+pragma Warnings (Off);
+with System.CRTL;
+pragma Warnings (On);
+use type System.CRTL.int64;
 procedure conftest is begin null; end conftest;
 EOF
 acx_cv_cc_gcc_supports_ada=no
@@ -387,13 +417,38 @@ if test x"$errors" = x && test -f conftest.$ac_objext; then
 fi
 rm -f conftest.*])
 
-if test x$GNATBIND != xno && test x$GNATMAKE != xno && test x$acx_cv_cc_gcc_supports_ada != xno; then
+if test "x$GNATBIND" != xno && test "x$GNATMAKE" != xno && test x$acx_cv_cc_gcc_supports_ada != xno; then
   have_gnat=yes
 else
   have_gnat=no
 fi
 ])
 
+# Test for D.
+AC_DEFUN([ACX_PROG_GDC],
+[AC_REQUIRE([AC_CHECK_TOOL_PREFIX])
+AC_REQUIRE([AC_PROG_CC])
+AC_CHECK_TOOL(GDC, gdc, no)
+AC_CACHE_CHECK([whether the D compiler works],
+                acx_cv_d_compiler_works,
+[cat >conftest.d <<EOF
+module conftest; int main() { return 0; }
+EOF
+acx_cv_d_compiler_works=no
+if test "x$GDC" != xno; then
+  errors=`(${GDC} $1[]m4_ifval([$1], [ ])-c conftest.d) 2>&1 || echo failure`
+  if test x"$errors" = x && test -f conftest.$ac_objext; then
+    acx_cv_d_compiler_works=yes
+  fi
+  rm -f conftest.*
+fi])
+if test "x$GDC" != xno && test x$acx_cv_d_compiler_works != xno; then
+  have_gdc=yes
+else
+  have_gdc=no
+fi
+])
+
 dnl 'make compare' can be significantly faster, if cmp itself can
 dnl skip bytes instead of using tail.  The test being performed is
 dnl "if cmp --ignore-initial=2 t1 t2 && ! cmp --ignore-initial=1 t1 t2"
@@ -404,7 +459,7 @@ AC_DEFUN([ACX_PROG_CMP_IGNORE_INITIAL],
 [AC_CACHE_CHECK([how to compare bootstrapped objects], gcc_cv_prog_cmp_skip,
 [ echo abfoo >t1
   echo cdfoo >t2
-  gcc_cv_prog_cmp_skip='tail +16c $$f1 > tmp-foo1; tail +16c $$f2 > tmp-foo2; cmp tmp-foo1 tmp-foo2'
+  gcc_cv_prog_cmp_skip='tail -c +17 $$f1 > tmp-foo1; tail -c +17 $$f2 > tmp-foo2; cmp tmp-foo1 tmp-foo2'
   if cmp t1 t2 2 2 > /dev/null 2>&1; then
     if cmp t1 t2 1 1 > /dev/null 2>&1; then
       :