Update GCC to autoconf 2.69, automake 1.15.1 (PR bootstrap/82856).

[thirdparty/gcc.git] / libquadmath / configure.ac

diff --git a/libquadmath/configure.ac b/libquadmath/configure.ac
index 8559c1d5aad55fdcc2d81a008f90ddf0e82a0af1..b75465bee8d187ea91807281205f275deea5fbd5 100644 (file)
--- a/libquadmath/configure.ac
+++ b/libquadmath/configure.ac
@@ -1,7 +1,6 @@
 # Process this file with autoconf to produce a configure script, like so:
 # aclocal && autoconf && autoheader && automake
 
-AC_PREREQ(2.64)
 AC_INIT([GCC Quad-precision Math Library], 0.1,,[libquadmath])
 AC_CONFIG_HEADER(config.h)
 
@@ -23,6 +22,8 @@ AC_CONFIG_HEADER(config.h)
 AC_CANONICAL_SYSTEM
 ACX_NONCANONICAL_TARGET
 
+AM_ENABLE_MULTILIB(, ..)
+
 target_alias=${target_alias-$host_alias}
 AC_SUBST(target_alias)
 
@@ -51,7 +52,7 @@ ACX_CHECK_PROG_VER([MAKEINFO], [makeinfo], [--version],
                    [4.[4-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
 AM_CONDITIONAL(BUILD_INFO, test $gcc_cv_prog_makeinfo_modern = "yes")
 
-ACX_BUGURL([http://gcc.gnu.org/bugs.html])
+ACX_BUGURL([https://gcc.gnu.org/bugs/])
 
 # Configure libtool
 AM_PROG_LIBTOOL
@@ -60,7 +61,6 @@ AC_SUBST(enable_shared)
 AC_SUBST(enable_static)
 
 AM_MAINTAINER_MODE
-AM_ENABLE_MULTILIB(, ..)
 
 AC_LANG_C
 # The same as in boehm-gc and libstdc++. Have to borrow it from there.
@@ -113,6 +113,7 @@ AC_SUBST(toolexecdir)
 AC_SUBST(toolexeclibdir)
 
 AC_CHECK_HEADERS(fenv.h langinfo.h locale.h wchar.h wctype.h limits.h ctype.h printf.h errno.h)
+LIBQUAD_CHECK_MATH_H_SIGNGAM
 
 # If available, sqrtl and cbrtl speed up the calculation -
 # but they are not required
@@ -164,35 +165,42 @@ CFLAGS="$saved_CFLAGS"
 
 # Check for symbol versioning (copied from libssp).
 AC_MSG_CHECKING([whether symbol versioning is supported])
-if test x$gcc_no_link = xyes; then
-  # If we cannot link, we cannot build shared libraries, so do not use
-  # symbol versioning.
-  quadmath_use_symver=no
-else
-  save_LDFLAGS="$LDFLAGS"
-  LDFLAGS="$LDFLAGS -fPIC -shared -Wl,--version-script,./conftest.map"
-  cat > conftest.map <<EOF
+AC_ARG_ENABLE(symvers,
+AS_HELP_STRING([--disable-symvers],
+  [disable symbol versioning for libquadmath]),
+quadmath_use_symver=$enableval,
+quadmath_use_symver=yes)
+if test "x$quadmath_use_symver" != xno; then
+  if test x$gcc_no_link = xyes; then
+    # If we cannot link, we cannot build shared libraries, so do not use
+    # symbol versioning.
+    quadmath_use_symver=no
+  else
+    save_LDFLAGS="$LDFLAGS"
+    LDFLAGS="$LDFLAGS -fPIC -shared -Wl,--version-script,./conftest.map"
+    cat > conftest.map <<EOF
 FOO_1.0 {
   global: *foo*; bar; local: *;
 };
 EOF
-  AC_TRY_LINK([int foo;],[],[quadmath_use_symver=gnu],[quadmath_use_symver=no])
-  if test x$quadmath_use_symver = xno; then
-    case "$target_os" in
-      solaris2*)
-        LDFLAGS="$save_LDFLAGS"
-        LDFLAGS="$LDFLAGS -fPIC -shared -Wl,-M,./conftest.map"
-        # Sun ld cannot handle wildcards and treats all entries as undefined.
-        cat > conftest.map <<EOF
+    AC_TRY_LINK([int foo;],[],[quadmath_use_symver=gnu],[quadmath_use_symver=no])
+    if test x$quadmath_use_symver = xno; then
+      case "$target_os" in
+        solaris2*)
+          LDFLAGS="$save_LDFLAGS"
+          LDFLAGS="$LDFLAGS -fPIC -shared -Wl,-M,./conftest.map"
+          # Sun ld cannot handle wildcards and treats all entries as undefined.
+          cat > conftest.map <<EOF
 FOO_1.0 {
   global: foo; local: *;
 };
 EOF
-        AC_TRY_LINK([int foo;],[],[quadmath_use_symver=sun],[quadmath_use_symver=no])
-        ;;
-    esac
+          AC_TRY_LINK([int foo;],[],[quadmath_use_symver=sun],[quadmath_use_symver=no])
+          ;;
+      esac
+    fi
+    LDFLAGS="$save_LDFLAGS"
   fi
-  LDFLAGS="$save_LDFLAGS"
 fi
 AC_MSG_RESULT($quadmath_use_symver)
 AM_CONDITIONAL(LIBQUAD_USE_SYMVER, [test "x$quadmath_use_symver" != xno])
@@ -201,7 +209,11 @@ AM_CONDITIONAL(LIBQUAD_USE_SYMVER_SUN, [test "x$quadmath_use_symver" = xsun])
 
 AC_CACHE_CHECK([whether __float128 is supported], [libquad_cv_have_float128],
   [GCC_TRY_COMPILE_OR_LINK([
+    #if (!defined(_ARCH_PPC)) || defined(__LONG_DOUBLE_IEEE128__)
     typedef _Complex float __attribute__((mode(TC))) __complex128;
+    #else
+    typedef _Complex float __attribute__((mode(KC))) __complex128;
+    #endif
 
     __float128 foo (__float128 x)
     {
@@ -328,6 +340,11 @@ if test x$quadmath_use_i18n_number_h = xyes; then
   AC_DEFINE([USE_I18N_NUMBER_H],[1],[whether i18n number rewriting can be supported])
 fi
 
+# Add CET specific flags if CET is enabled
+GCC_CET_FLAGS(CET_FLAGS)
+XCFLAGS="$XCFLAGS $CET_FLAGS"
+AC_SUBST(XCFLAGS)
+
 AC_CACHE_SAVE
 
 if test ${multilib} = yes; then
@@ -355,6 +372,8 @@ AS_HELP_STRING([--enable-generated-files-in-srcdir],
 AC_MSG_RESULT($enable_generated_files_in_srcdir)
 AM_CONDITIONAL(GENINSRC, test "$enable_generated_files_in_srcdir" = yes)
 
+# Determine what GCC version number to use in filesystem paths.
+GCC_BASE_VER
 
 AC_CONFIG_FILES(Makefile)
 AC_OUTPUT