* configure.ac (gcc_cv_ld_sol2_emulation): Test for GNU ld *_sol2

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

diff --git a/gcc/configure.ac b/gcc/configure.ac
index 743798e..27cb45c 100644 (file)
--- a/gcc/configure.ac
+++ b/gcc/configure.ac
@@ -2152,7 +2152,35 @@ gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
  [elf,2,13,0],,
 [      .hidden foobar
-foobar:])
+foobar:],[
+# Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
+# STV_HIDDEN, so disable .hidden support if so.
+case "${target}" in
+  i?86-*-solaris2*)
+    if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
+      cat > conftest.s <<EOF
+.globl hidden
+        .hidden hidden
+hidden:
+.globl default
+        .set    default,hidden
+EOF
+      if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
+        && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
+        grep '\.hidden default' > /dev/null; then
+        gcc_cv_as_hidden=no
+      else
+        gcc_cv_as_hidden=yes
+      fi
+    else
+      # Assume bug is present if objdump is missing.
+      gcc_cv_as_hidden=no
+    fi
+    ;;
+  *)
+    gcc_cv_as_hidden=yes
+    ;;
+esac])
 
 changequote(,)dnl
 if test $in_tree_ld != yes ; then
@@ -3252,11 +3280,18 @@ foo:    nop
       [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
         [Define if your assembler supports the ffreep mnemonic.])])
 
+    gcc_GAS_CHECK_FEATURE([.quad directive],
+      gcc_cv_as_ix86_quad,,,
+      [.quad 0],,
+      [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
+        [Define if your assembler supports the .quad directive.])])
+
     gcc_GAS_CHECK_FEATURE([sahf mnemonic],
       gcc_cv_as_ix86_sahf,,,
-      [sahf],,
+      [.code64
+       sahf],,
       [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
-        [Define if your assembler supports the sahf mnemonic.])])
+        [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
 
     gcc_GAS_CHECK_FEATURE([swap suffix],
       gcc_cv_as_ix86_swap,,,
@@ -3566,8 +3601,8 @@ x:
         echo ' .end x' >> conftest.s
         if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
            && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
-         if $gcc_cv_objdump -d conftest.so | grep -q jalr \
-            && $gcc_cv_objdump -d conftest.so | grep -q "bal.*<x>"; then
+         if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
+            && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
             gcc_cv_as_ld_jalr_reloc=yes
          fi
         fi
@@ -3999,6 +4034,29 @@ if test x"$enable_linker_build_id" = xyes; then
   fi
 fi
 
+# In binutils 2.21, GNU ld gained support for new emulations fully
+# supporting the Solaris 2 ABI.  Detect their presence in the linker used.
+AC_CACHE_CHECK(linker *_sol2 emulation support,
+  gcc_cv_ld_sol2_emulation,
+  [gcc_cv_ld_sol2_emulation=no
+  if test $in_tree_ld = yes ; then
+    if test "$gcc_cv_gld_major_version" -eq 2 -a \
+       "$gcc_cv_gld_minor_version" -ge 21 -o \
+       "$gcc_cv_gld_major_version" -gt 2 \
+       && test $in_tree_ld_is_elf = yes; then
+      gcc_cv_ld_sol2_emulation=yes
+    fi
+  elif test x$gcc_cv_ld != x; then
+    if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
+       grep _sol2 > /dev/null; then
+      gcc_cv_ld_sol2_emulation=yes
+    fi
+  fi])
+if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
+  AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
+  [Define if your linker supports the *_sol2 emulations.])
+fi
+
 AC_CACHE_CHECK(linker --sysroot support,
   gcc_cv_ld_sysroot,
   [gcc_cv_ld_sysroot=no
@@ -4197,8 +4255,6 @@ all_compilers=
 all_outputs='Makefile gccbug'
 # List of language makefile fragments.
 all_lang_makefrags=
-# List of language subdirectory makefiles.  Deprecated.
-all_lang_makefiles=
 # Additional files for gengtype
 all_gtfiles="$target_gtfiles"
 
@@ -4292,9 +4348,6 @@ changequote([,])dnl
        if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
            lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
        fi
-       if test -f ${srcdir}/$gcc_subdir/Makefile.in
-               then all_lang_makefiles="$gcc_subdir/Makefile"
-       fi
        all_languages="$all_languages $language"
        all_compilers="$all_compilers $compilers"
        all_outputs="$all_outputs $outputs"
@@ -4400,7 +4453,6 @@ AC_SUBST(srcdir)
 AC_SUBST(all_compilers)
 AC_SUBST(all_gtfiles)
 AC_SUBST(all_lang_makefrags)
-AC_SUBST(all_lang_makefiles)
 AC_SUBST(all_languages)
 AC_SUBST(all_selected_languages)
 AC_SUBST(build_exeext)