In order to compile gcc 4.9 on armv7 the patches below are required. I
don't know if the approach for the configure patch is the correct way to
inject -fbracket-depth=512 is the best way to do it. The patch for
gcc/system.h had no effect on a i386 build. Perhaps this becomes handy if
6.3 packages are build for armv7.
Index: patches/patch-gcc_configure
===================================================================
RCS file: /cvs/ports/lang/gcc/4.9/patches/patch-gcc_configure,v
retrieving revision 1.5
diff -u -p -r1.5 patch-gcc_configure
--- patches/patch-gcc_configure 1 Sep 2016 17:30:33 -0000 1.5
+++ patches/patch-gcc_configure 23 Mar 2018 17:39:58 -0000
@@ -1,7 +1,18 @@
$OpenBSD: patch-gcc_configure,v 1.5 2016/09/01 17:30:33 pascal Exp $
---- gcc/configure.orig Sun May 22 10:53:32 2016
-+++ gcc/configure Sat Aug 6 19:19:05 2016
-@@ -17367,7 +17367,7 @@ openbsd*)
+Index: gcc/configure
+--- gcc/configure.orig
++++ gcc/configure
+@@ -6597,6 +6597,9 @@ $as_echo "$ac_res" >&6; }
+ fi
+ done
+ CFLAGS="$save_CFLAGS"
++if [[ `uname -m` == armv7 ]] ; then
++ noexception_flags="$noexception_flags -fbracket-depth=512"
++fi
+
+
+ # Enable expensive internal checks
+@@ -17367,7 +17370,7 @@ openbsd*)
*) need_version=no ;;
esac
library_names_spec='${libname}${release}${shared_ext}$versuffix
${libname}${shared_ext}$versuffix'
@@ -10,7 +21,7 @@ $OpenBSD: patch-gcc_configure,v 1.5 2016
shlibpath_var=LD_LIBRARY_PATH
if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test
"$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
case $host_os in
-@@ -21027,7 +21027,7 @@ openbsd*)
+@@ -21027,7 +21030,7 @@ openbsd*)
*) need_version=no ;;
esac
library_names_spec='${libname}${release}${shared_ext}$versuffix
${libname}${shared_ext}$versuffix'
@@ -19,7 +30,7 @@ $OpenBSD: patch-gcc_configure,v 1.5 2016
shlibpath_var=LD_LIBRARY_PATH
if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test
"$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
case $host_os in
-@@ -27522,6 +27522,7 @@ else
+@@ -27522,6 +27525,7 @@ else
fi
;;
Index: patches/patch-gcc_system_h
===================================================================
RCS file: patches/patch-gcc_system_h
diff -N patches/patch-gcc_system_h
--- /dev/null 1 Jan 1970 00:00:00 -0000
+++ patches/patch-gcc_system_h 23 Mar 2018 17:39:58 -0000
@@ -0,0 +1,13 @@
+$OpenBSD$
+
+Index: gcc/system.h
+--- gcc/system.h.orig
++++ gcc/system.h
+@@ -231,6 +231,7 @@ extern int errno;
+ file uses a standard library header that includes <cstdlib>, we will get
+ an error about 'using std::malloc'. */
+ #ifdef __cplusplus
++#include <new>
+ #include <cstdlib>
+ #endif
+
