- Fix configure tests compromised by LTO

binutils-config.patch

@@ -0,0 +1,44 @@
+diff -Nrup a/libiberty/aclocal.m4 b/libiberty/aclocal.m4
+--- a/libiberty/aclocal.m4	2019-01-19 09:01:34.000000000 -0700
++++ b/libiberty/aclocal.m4	2020-01-09 22:00:27.183312982 -0700
+@@ -147,7 +147,7 @@ if test $ac_cv_os_cray = yes; then
+ fi
+ 
+ AC_CACHE_CHECK(stack direction for C alloca, ac_cv_c_stack_direction,
+-[AC_TRY_RUN([find_stack_direction ()
++[AC_TRY_RUN([__attribute__ ((noclone,noinline)) find_stack_direction ()
+ {
+   static char *addr = 0;
+   auto char dummy;
+diff --git a/config/intdiv0.m4 b/config/intdiv0.m4
+index 55dddcf1..ba906efc 100644
+--- a/config/intdiv0.m4
++++ b/config/intdiv0.m4
+@@ -31,10 +31,10 @@ sigfpe_handler (sig) int sig;
+   exit (sig != SIGFPE);
+ }
+ 
+-int x = 1;
+-int y = 0;
+-int z;
+-int nan;
++volatile int x = 1;
++volatile int y = 0;
++volatile int z;
++volatile int nan;
+ 
+ int main ()
+ {
+diff --git a/libiberty/configure.ac b/libiberty/configure.ac
+index f1ce7601..fc20d228 100644
+--- a/libiberty/configure.ac
++++ b/libiberty/configure.ac
+@@ -661,7 +661,7 @@ if test -z "${setobjs}"; then
+   for v in $vars; do
+     AC_MSG_CHECKING([for $v])
+     AC_CACHE_VAL(libiberty_cv_var_$v,
+-      [AC_LINK_IFELSE([AC_LANG_PROGRAM([[int *p;]],[[extern int $v []; p = $v;]])],
++      [AC_LINK_IFELSE([AC_LANG_PROGRAM([[__attribute__ ((used)) int *p;]],[[extern int $v []; p = $v;]])],
+ 		      [eval "libiberty_cv_var_$v=yes"],
+ 		      [eval "libiberty_cv_var_$v=no"])])
+     if eval "test \"`echo '$libiberty_cv_var_'$v`\" = yes"; then

mingw-binutils.spec

@@ -2,7 +2,7 @@
 
 Name:           mingw-binutils
 Version:        2.34
-Release:        0%{?dist}
+Release:        1%{?dist}
 Summary:        Cross-compiled version of binutils for Win32 and Win64 environments
 
 License:        GPLv2+ and LGPLv2+ and GPLv3+ and LGPLv3+
@@ -95,6 +95,8 @@ Patch16: binutils-CVE-2019-1010204.patch
 
 ### MINGW specific patches
 
+Patch102:	  binutils-config.patch
+
 BuildRequires:  gcc
 BuildRequires:  flex
 BuildRequires:  bison
@@ -107,6 +109,7 @@ BuildRequires:  dejagnu
 BuildRequires:  sharutils
 %endif
 Provides:       bundled(libiberty)
+BuildRequires:	autoconf, automake
 
 
 %description
@@ -148,6 +151,19 @@ understand Windows executables and DLLs.
 
 
 %build
+# Dependencies are not set up to rebuild the configure files
+# in the subdirectories.  So we just rebuild the ones we care
+# about
+pushd libiberty
+autoreconf -ivf
+popd
+
+# We call configure directly rather than via macros, thus if
+# we are using LTO, we have to manually fix the broken configure
+# scripts
+[ %{_lto_cflags}x != x ] && %{_fix_broken_configure_for_lto}
+
+
 mkdir build_win32
 pushd build_win32
 CFLAGS="%{optflags}" \
@@ -335,6 +351,9 @@ rm -rf %{buildroot}/multilib
 
 
 %changelog
+* Mon Jul 20 2020 Jeff Law <law@redhat.com> - 2.34.0-2
+- Fix configure tests compromised by LTO
+
 * Fri Jun 19 2020 Sandro Mani <manisandro@gmail.com> - 2.34.0-1
 - Update to 2.34.0
 - Modernize spec