development/gcclegacy494: Patched for glibc-2.26 (-current).

Signed-off-by: David Spencer <idlemoor@slackbuilds.org>

4 files changed, 381 insertions, 59 deletions

diff --git a/development/gcclegacy494/942-asan-fix-missing-include-signal-h.patch b/development/gcclegacy494/942-asan-fix-missing-include-signal-h.patch
new file mode 100644
index 000000000000..5f00c04d2ba2
--- /dev/null
+++ b/development/gcclegacy494/942-asan-fix-missing-include-signal-h.patch
@@ -0,0 +1,36 @@
+From 205aa8e97bab553e5e6fe45896325e97962de704 Mon Sep 17 00:00:00 2001
+From: Rolf Eike Beer <eb@emlix.com>
+Date: Wed, 8 Feb 2017 11:42:52 +0100
+Subject: [PATCH] asan: fix missing include of signal.h
+
+This breaks when building gcc 4.9.4 / 5.4.0 with
+target_platform=powerpc-unknown-linux-gnu with glibc 2.25:
+
+../../../../gcc-host/libsanitizer/asan/asan_linux.cc: In function 'bool __asan::AsanInterceptsSignal(int)':
+../../../../gcc-host/libsanitizer/asan/asan_linux.cc:222:20: error: 'SIGSEGV' was not declared in this scope
+   return signum == SIGSEGV && common_flags()->handle_segv;
+
+This has been verified to apply to at least 4.9.4 and up to 5.4,
+the code has been reworked for gcc 6.
+
+Resolves (Buildroot) Bug: https://bugs.busybox.net/show_bug.cgi?id=10061
+
+Upstream: https://patchwork.ozlabs.org/patch/725596/
+
+Signed-off-by: Matthew Weber <matthew.weber@rockwellcollins.com>
+---
+ libsanitizer/asan/asan_linux.cc | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/libsanitizer/asan/asan_linux.cc b/libsanitizer/asan/asan_linux.cc
+index c504168..59087b9 100644
+--- a/libsanitizer/asan/asan_linux.cc
++++ b/libsanitizer/asan/asan_linux.cc
+@@ -29,6 +29,7 @@
+ #include <dlfcn.h>
+ #include <fcntl.h>
+ #include <pthread.h>
++#include <signal.h>
+ #include <stdio.h>
+ #include <unistd.h>
+ #include <unwind.h>
diff --git a/development/gcclegacy494/943-Use-ucontext_t-not-struct-ucontext-in-linux-unwind.h.patch b/development/gcclegacy494/943-Use-ucontext_t-not-struct-ucontext-in-linux-unwind.h.patch
new file mode 100644
index 000000000000..526346c6f853
--- /dev/null
+++ b/development/gcclegacy494/943-Use-ucontext_t-not-struct-ucontext-in-linux-unwind.h.patch
@@ -0,0 +1,190 @@
+From b7e85069238c40eae54d0ca03ab6d5470d1815f9 Mon Sep 17 00:00:00 2001
+From: jsm28 <jsm28@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Tue, 4 Jul 2017 10:25:10 +0000
+Subject: [PATCH] Use ucontext_t not struct ucontext in linux-unwind.h files.
+
+Current glibc no longer gives the ucontext_t type the tag struct
+ucontext, to conform with POSIX namespace rules.  This requires
+various linux-unwind.h files in libgcc, that were previously using
+struct ucontext, to be fixed to use ucontext_t instead.  This is
+similar to the removal of the struct siginfo tag from siginfo_t some
+years ago.
+
+This patch changes those files to use ucontext_t instead.  As the
+standard name that should be unconditionally safe, so this is not
+restricted to architectures supported by glibc, or conditioned on the
+glibc version.
+
+Tested compilation together with current glibc with glibc's
+build-many-glibcs.py.
+
+	* config/aarch64/linux-unwind.h (aarch64_fallback_frame_state),
+	config/alpha/linux-unwind.h (alpha_fallback_frame_state),
+	config/bfin/linux-unwind.h (bfin_fallback_frame_state),
+	config/i386/linux-unwind.h (x86_64_fallback_frame_state,
+	x86_fallback_frame_state), config/m68k/linux-unwind.h (struct
+	uw_ucontext), config/nios2/linux-unwind.h (struct nios2_ucontext),
+	config/pa/linux-unwind.h (pa32_fallback_frame_state),
+	config/sh/linux-unwind.h (sh_fallback_frame_state),
+	config/tilepro/linux-unwind.h (tile_fallback_frame_state),
+	config/xtensa/linux-unwind.h (xtensa_fallback_frame_state): Use
+	ucontext_t instead of struct ucontext.
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-5-branch@249958 138bc75d-0d04-0410-961f-82ee72b054a4
+[Romain backport from gcc-5-branch]
+Signed-off-by: Romain Naour <romain.naour@gmail.com>
+---
+ libgcc/config/aarch64/linux-unwind.h | 2 +-
+ libgcc/config/alpha/linux-unwind.h   | 2 +-
+ libgcc/config/bfin/linux-unwind.h    | 2 +-
+ libgcc/config/i386/linux-unwind.h    | 4 ++--
+ libgcc/config/m68k/linux-unwind.h    | 2 +-
+ libgcc/config/nios2/linux-unwind.h   | 2 +-
+ libgcc/config/pa/linux-unwind.h      | 2 +-
+ libgcc/config/sh/linux-unwind.h      | 2 +-
+ libgcc/config/tilepro/linux-unwind.h | 2 +-
+ libgcc/config/xtensa/linux-unwind.h  | 2 +-
+ 10 files changed, 11 insertions(+), 11 deletions(-)
+
+diff --git a/libgcc/config/aarch64/linux-unwind.h b/libgcc/config/aarch64/linux-unwind.h
+index 6b5b3cd..d13dc34 100644
+--- a/libgcc/config/aarch64/linux-unwind.h
++++ b/libgcc/config/aarch64/linux-unwind.h
+@@ -52,7 +52,7 @@ aarch64_fallback_frame_state (struct _Unwind_Context *context,
+   struct rt_sigframe
+   {
+     siginfo_t info;
+-    struct ucontext uc;
++    ucontext_t uc;
+   };
+ 
+   struct rt_sigframe *rt_;
+diff --git a/libgcc/config/alpha/linux-unwind.h b/libgcc/config/alpha/linux-unwind.h
+index b5bfd1c..166d3d2 100644
+--- a/libgcc/config/alpha/linux-unwind.h
++++ b/libgcc/config/alpha/linux-unwind.h
+@@ -51,7 +51,7 @@ alpha_fallback_frame_state (struct _Unwind_Context *context,
+     {
+       struct rt_sigframe {
+ 	siginfo_t info;
+-	struct ucontext uc;
++	ucontext_t uc;
+       } *rt_ = context->cfa;
+       sc = &rt_->uc.uc_mcontext;
+     }
+diff --git a/libgcc/config/bfin/linux-unwind.h b/libgcc/config/bfin/linux-unwind.h
+index dc58f0a..8b94568 100644
+--- a/libgcc/config/bfin/linux-unwind.h
++++ b/libgcc/config/bfin/linux-unwind.h
+@@ -52,7 +52,7 @@ bfin_fallback_frame_state (struct _Unwind_Context *context,
+ 	void *puc;
+ 	char retcode[8];
+ 	siginfo_t info;
+-	struct ucontext uc;
++	ucontext_t uc;
+       } *rt_ = context->cfa;
+ 
+       /* The void * cast is necessary to avoid an aliasing warning.
+diff --git a/libgcc/config/i386/linux-unwind.h b/libgcc/config/i386/linux-unwind.h
+index 7986928..a9d621c 100644
+--- a/libgcc/config/i386/linux-unwind.h
++++ b/libgcc/config/i386/linux-unwind.h
+@@ -58,7 +58,7 @@ x86_64_fallback_frame_state (struct _Unwind_Context *context,
+   if (*(unsigned char *)(pc+0) == 0x48
+       && *(unsigned long long *)(pc+1) == RT_SIGRETURN_SYSCALL)
+     {
+-      struct ucontext *uc_ = context->cfa;
++      ucontext_t *uc_ = context->cfa;
+       /* The void * cast is necessary to avoid an aliasing warning.
+          The aliasing warning is correct, but should not be a problem
+          because it does not alias anything.  */
+@@ -138,7 +138,7 @@ x86_fallback_frame_state (struct _Unwind_Context *context,
+ 	siginfo_t *pinfo;
+ 	void *puc;
+ 	siginfo_t info;
+-	struct ucontext uc;
++	ucontext_t uc;
+       } *rt_ = context->cfa;
+       /* The void * cast is necessary to avoid an aliasing warning.
+          The aliasing warning is correct, but should not be a problem
+diff --git a/libgcc/config/m68k/linux-unwind.h b/libgcc/config/m68k/linux-unwind.h
+index 1ba2a0c4..d67767e 100644
+--- a/libgcc/config/m68k/linux-unwind.h
++++ b/libgcc/config/m68k/linux-unwind.h
+@@ -33,7 +33,7 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+ /* <sys/ucontext.h> is unfortunately broken right now.  */
+ struct uw_ucontext {
+ 	unsigned long	  uc_flags;
+-	struct ucontext  *uc_link;
++	ucontext_t	 *uc_link;
+ 	stack_t		  uc_stack;
+ 	mcontext_t	  uc_mcontext;
+ 	unsigned long	  uc_filler[80];
+diff --git a/libgcc/config/nios2/linux-unwind.h b/libgcc/config/nios2/linux-unwind.h
+index ba4bd80..8978868 100644
+--- a/libgcc/config/nios2/linux-unwind.h
++++ b/libgcc/config/nios2/linux-unwind.h
+@@ -38,7 +38,7 @@ struct nios2_mcontext {
+ 
+ struct nios2_ucontext {
+   unsigned long uc_flags;
+-  struct ucontext *uc_link;
++  ucontext_t *uc_link;
+   stack_t uc_stack;
+   struct nios2_mcontext uc_mcontext;
+   sigset_t uc_sigmask;	/* mask last for extensibility */
+diff --git a/libgcc/config/pa/linux-unwind.h b/libgcc/config/pa/linux-unwind.h
+index 4a3cfff..d2ac437 100644
+--- a/libgcc/config/pa/linux-unwind.h
++++ b/libgcc/config/pa/linux-unwind.h
+@@ -80,7 +80,7 @@ pa32_fallback_frame_state (struct _Unwind_Context *context,
+   struct sigcontext *sc;
+   struct rt_sigframe {
+     siginfo_t info;
+-    struct ucontext uc;
++    ucontext_t uc;
+   } *frame;
+ 
+   /* rt_sigreturn trampoline:
+diff --git a/libgcc/config/sh/linux-unwind.h b/libgcc/config/sh/linux-unwind.h
+index 4875706..671bde7 100644
+--- a/libgcc/config/sh/linux-unwind.h
++++ b/libgcc/config/sh/linux-unwind.h
+@@ -180,7 +180,7 @@ sh_fallback_frame_state (struct _Unwind_Context *context,
+     {
+       struct rt_sigframe {
+ 	siginfo_t info;
+-	struct ucontext uc;
++	ucontext_t uc;
+       } *rt_ = context->cfa;
+       /* The void * cast is necessary to avoid an aliasing warning.
+          The aliasing warning is correct, but should not be a problem
+diff --git a/libgcc/config/tilepro/linux-unwind.h b/libgcc/config/tilepro/linux-unwind.h
+index 27481cf..c24d58c 100644
+--- a/libgcc/config/tilepro/linux-unwind.h
++++ b/libgcc/config/tilepro/linux-unwind.h
+@@ -61,7 +61,7 @@ tile_fallback_frame_state (struct _Unwind_Context *context,
+   struct rt_sigframe {
+     unsigned char save_area[C_ABI_SAVE_AREA_SIZE];
+     siginfo_t info;
+-    struct ucontext uc;
++    ucontext_t uc;
+   } *rt_;
+ 
+   /* Return if this is not a signal handler.  */
+diff --git a/libgcc/config/xtensa/linux-unwind.h b/libgcc/config/xtensa/linux-unwind.h
+index 6832d0b..cb15b4c 100644
+--- a/libgcc/config/xtensa/linux-unwind.h
++++ b/libgcc/config/xtensa/linux-unwind.h
+@@ -63,7 +63,7 @@ xtensa_fallback_frame_state (struct _Unwind_Context *context,
+ 
+   struct rt_sigframe {
+     siginfo_t info;
+-    struct ucontext uc;
++    ucontext_t uc;
+   } *rt_;
+ 
+   /* movi a2, __NR_rt_sigreturn; syscall */
+-- 
+2.9.5
+
diff --git a/development/gcclegacy494/944-sanitizer-linux.patch b/development/gcclegacy494/944-sanitizer-linux.patch
new file mode 100644
index 000000000000..caadf2de7be9
--- /dev/null
+++ b/development/gcclegacy494/944-sanitizer-linux.patch
@@ -0,0 +1,88 @@
+From f9a35ba5c150da2e381c4cab01f8f12bcd6af5d2 Mon Sep 17 00:00:00 2001
+From: jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Mon, 17 Jul 2017 19:41:08 +0000
+Subject: [PATCH] 	Backported from mainline 	2017-07-14  Jakub
+ Jelinek  <jakub@redhat.com>
+
+	PR sanitizer/81066
+	* sanitizer_common/sanitizer_linux.h: Cherry-pick upstream r307969.
+	* sanitizer_common/sanitizer_linux.cc: Likewise.
+	* sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc: Likewise.
+	* tsan/tsan_platform_linux.cc: Likewise.
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-7-branch@250287 138bc75d-0d04-0410-961f-82ee72b054a4
+(cherry picked from commit 72edc2c02f8b4768ad660f46a1c7e2400c0a8e06)
+[Romain backport to 4.9.4]
+Signed-off-by: Romain Naour <romain.naour@gmail.com>
+---
+ libsanitizer/sanitizer_common/sanitizer_linux.cc                      | 3 +--
+ libsanitizer/sanitizer_common/sanitizer_linux.h                       | 4 +---
+ libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc | 2 +-
+ libsanitizer/tsan/tsan_platform_linux.cc                              | 2 +-
+ 4 files changed, 4 insertions(+), 7 deletions(-)
+
+diff --git a/libsanitizer/sanitizer_common/sanitizer_linux.cc b/libsanitizer/sanitizer_common/sanitizer_linux.cc
+index 69c9c10..8e53673 100644
+--- a/libsanitizer/sanitizer_common/sanitizer_linux.cc
++++ b/libsanitizer/sanitizer_common/sanitizer_linux.cc
+@@ -599,8 +599,7 @@ uptr internal_prctl(int option, uptr arg2, uptr arg3, uptr arg4, uptr arg5) {
+   return internal_syscall(__NR_prctl, option, arg2, arg3, arg4, arg5);
+ }
+ 
+-uptr internal_sigaltstack(const struct sigaltstack *ss,
+-                         struct sigaltstack *oss) {
++uptr internal_sigaltstack(const void *ss, void *oss) {
+   return internal_syscall(__NR_sigaltstack, (uptr)ss, (uptr)oss);
+ }
+ 
+diff --git a/libsanitizer/sanitizer_common/sanitizer_linux.h b/libsanitizer/sanitizer_common/sanitizer_linux.h
+index 6422df1..8e111d1 100644
+--- a/libsanitizer/sanitizer_common/sanitizer_linux.h
++++ b/libsanitizer/sanitizer_common/sanitizer_linux.h
+@@ -18,7 +18,6 @@
+ #include "sanitizer_platform_limits_posix.h"
+ 
+ struct link_map;  // Opaque type returned by dlopen().
+-struct sigaltstack;
+ 
+ namespace __sanitizer {
+ // Dirent structure for getdents(). Note that this structure is different from
+@@ -28,8 +27,7 @@ struct linux_dirent;
+ // Syscall wrappers.
+ uptr internal_getdents(fd_t fd, struct linux_dirent *dirp, unsigned int count);
+ uptr internal_prctl(int option, uptr arg2, uptr arg3, uptr arg4, uptr arg5);
+-uptr internal_sigaltstack(const struct sigaltstack* ss,
+-                          struct sigaltstack* oss);
++uptr internal_sigaltstack(const void* ss, void* oss);
+ uptr internal_sigaction(int signum, const __sanitizer_kernel_sigaction_t *act,
+     __sanitizer_kernel_sigaction_t *oldact);
+ uptr internal_sigprocmask(int how, __sanitizer_kernel_sigset_t *set,
+diff --git a/libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc b/libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc
+index 6ee63ec..50c21a3 100644
+--- a/libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc
++++ b/libsanitizer/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc
+@@ -238,7 +238,7 @@ static int TracerThread(void* argument) {
+ 
+   // Alternate stack for signal handling.
+   InternalScopedBuffer<char> handler_stack_memory(kHandlerStackSize);
+-  struct sigaltstack handler_stack;
++  stack_t handler_stack;
+   internal_memset(&handler_stack, 0, sizeof(handler_stack));
+   handler_stack.ss_sp = handler_stack_memory.data();
+   handler_stack.ss_size = kHandlerStackSize;
+diff --git a/libsanitizer/tsan/tsan_platform_linux.cc b/libsanitizer/tsan/tsan_platform_linux.cc
+index fe69430..49f5270 100644
+--- a/libsanitizer/tsan/tsan_platform_linux.cc
++++ b/libsanitizer/tsan/tsan_platform_linux.cc
+@@ -351,7 +351,7 @@ bool IsGlobalVar(uptr addr) {
+ // closes within glibc. The code is a pure hack.
+ int ExtractResolvFDs(void *state, int *fds, int nfd) {
+   int cnt = 0;
+-  __res_state *statp = (__res_state*)state;
++  struct __res_state *statp = (struct __res_state*)state;
+   for (int i = 0; i < MAXNS && cnt < nfd; i++) {
+     if (statp->_u._ext.nsaddrs[i] && statp->_u._ext.nssocks[i] != -1)
+       fds[cnt++] = statp->_u._ext.nssocks[i];
+-- 
+2.9.5
+
diff --git a/development/gcclegacy494/gcclegacy494.SlackBuild b/development/gcclegacy494/gcclegacy494.SlackBuild
index 30cf14416277..3e148854f43b 100644
--- a/development/gcclegacy494/gcclegacy494.SlackBuild
+++ b/development/gcclegacy494/gcclegacy494.SlackBuild
@@ -24,7 +24,7 @@
 
 PRGNAM=gcclegacy494
 VERSION=${VERSION:-4.9.4}
-BUILD=${BUILD:-2}
+BUILD=${BUILD:-3}
 TAG=${TAG:-_SBo}
 
 INSTLOC=${INSTLOC:-/opt/$PRGNAM}
@@ -47,58 +47,54 @@ if [ "$ARCH" = "i386" ]; then
   LIBDIRSUFFIX=""
   LIB_ARCH=i386
 elif [ "$ARCH" = "i486" ]; then
-    SLKCFLAGS="-O2 -march=i486 -mtune=i686"
-    LIBDIRSUFFIX=""
-    LIB_ARCH=i386
+  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
+  LIBDIRSUFFIX=""
+  LIB_ARCH=i386
 elif [ "$ARCH" = "i586" ]; then
-    SLKCFLAGS="-O2 -march=i586 -mtune=i686"
-    LIBDIRSUFFIX=""
-    LIB_ARCH=i386
+  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
+  LIBDIRSUFFIX=""
+  LIB_ARCH=i386
 elif [ "$ARCH" = "i686" ]; then
-    SLKCFLAGS="-O2 -march=i686"
-    LIBDIRSUFFIX=""
-    LIB_ARCH=i386
+  SLKCFLAGS="-O2 -march=i686"
+  LIBDIRSUFFIX=""
+  LIB_ARCH=i386
 elif [ "$ARCH" = "s390" ]; then
-    SLKCFLAGS="-O2"
-    LIBDIRSUFFIX=""
-    LIB_ARCH=s390
+  SLKCFLAGS="-O2"
+  LIBDIRSUFFIX=""
+  LIB_ARCH=s390
 elif [ "$ARCH" = "x86_64" ]; then
-    SLKCFLAGS="-O2 -fPIC"
-    LIBDIRSUFFIX="64"
-    LIB_ARCH=amd64
+  SLKCFLAGS="-O2 -fPIC"
+  LIBDIRSUFFIX="64"
+  LIB_ARCH=amd64
 elif [ "$ARCH" = "armv7hl" ]; then
-    SLKCFLAGS="-O3 -march=armv7-a -mfpu=vfpv3-d16"
-    LIBDIRSUFFIX=""
-    LIB_ARCH=armv7hl
+  SLKCFLAGS="-O3 -march=armv7-a -mfpu=vfpv3-d16"
+  LIBDIRSUFFIX=""
+  LIB_ARCH=armv7hl
 else
-    SLKCFLAGS="-O2"
-    LIBDIRSUFFIX=""
-    LIB_ARCH=$ARCH
+  SLKCFLAGS="-O2"
+  LIBDIRSUFFIX=""
+  LIB_ARCH=$ARCH
 fi
 
-mkdir -p $TMP
-
 case "$ARCH" in
     arm*) TARGET=$ARCH-slackware-linux-gnueabi ;;
        *) TARGET=$ARCH-slackware-linux ;;
 esac
 
-if [ "$ARCH" != "x86_64" ]; then
-  GCC_ARCHOPTS="--with-arch=$ARCH"
-else
+if [ "$ARCH" = "x86_64" ]; then
   GCC_ARCHOPTS="--disable-multilib"
+else
+  GCC_ARCHOPTS="--with-arch=$ARCH"
 fi
 
 set -e
 
-cd $TMP/
-rm -rf gcc-4.9.4/
-tar -xzf $CWD/gcc-4.9.4.tar.gz
-cd gcc-4.9.4
-
-# Do not run fixincludes
-cp -v gcc/Makefile.in{,.orig}
-sed 's@\./fixinc\.sh@-c true@' gcc/Makefile.in.orig > gcc/Makefile.in
+rm -rf $PKG
+mkdir -p $TMP $PKG $OUTPUT
+cd $TMP
+rm -rf gcc-$VERSION
+tar xvf $CWD/gcc-$VERSION.tar.gz
+cd gcc-$VERSION
 
 tar xjf $CWD/mpfr-2.4.2.tar.bz2
 ln -sf mpfr-2.4.2 mpfr
@@ -109,23 +105,35 @@ ln -sf mpc-0.8.1 mpc
 tar xjf $CWD/isl-0.12.2.tar.bz2
 ln -sf isl-0.12.2 isl
 tar xzf $CWD/cloog-0.18.1.tar.gz
-ln -sf cloog-0.18.1 cloog 
+ln -sf cloog-0.18.1 cloog
 
 chown -R root:root .
 find -L . \
-\( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
- -o -perm 511 \) -exec chmod 755 {} \; -o \
-\( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
- -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;
+ \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
+  -o -perm 511 \) -exec chmod 755 {} \; -o \
+ \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
+  -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;
+
+# Do not run fixincludes
+cp -v gcc/Makefile.in{,.orig}
+sed 's@\./fixinc\.sh@-c true@' gcc/Makefile.in.orig > gcc/Makefile.in
+
+# Apply patches if we are compiling against glibc 2.26
+if [ $(ldd --version | head -1) = 'ldd (GNU libc) 2.26' ]; then
+  patch -p1 -i "$CWD/942-asan-fix-missing-include-signal-h.patch"
+  patch -p1 -i "$CWD/943-Use-ucontext_t-not-struct-ucontext-in-linux-unwind.h.patch"
+  patch -p1 -i "$CWD/944-sanitizer-linux.patch"
+  export glibcxx_cv_c99_math=yes
+fi
+
 rm -rf $TMP/objdir
 mkdir $TMP/objdir
 cd $TMP/objdir
-rm -rf $PKG
-mkdir -p $PKG
-CFLAGS="$SLKCFLAGS"
-CXXFLAGS="$SLKCFLAGS"
- $PWD/../gcc-4.9.4/configure --prefix=$INSTLOC \
-   --program-suffix=-4.9.4 \
+
+CFLAGS="$SLKCFLAGS" \
+CXXFLAGS="$SLKCFLAGS" \
+../gcc-$VERSION/configure --prefix=$INSTLOC \
+   --program-suffix=-$VERSION \
    --enable-languages=c,c++ \
    --with-system-zlib \
    --libdir=$INSTLOC/lib$LIBDIRSUFFIX \
@@ -145,25 +153,25 @@ make DESTDIR=$PKG install-strip
 
 # Thank you to 'idlemoor'
 mkdir -p $PKG/usr/bin
-cd /$PKG/usr/bin
+cd $PKG/usr/bin
 for COMPILER in gcc g++ ; do
-	sed \
-		-e "s~%LIBDIRSUFFIX%~$LIBDIRSUFFIX~" \
-		-e "s~%COMPILER%~$COMPILER~" \
-       	        -e "s~%INSTLOC%~$INSTLOC~" \
-		< $CWD/wrapper.sh \
-		> $PKG/usr/bin/$ARCH-slackware-linux-$COMPILER-4.9.4
-	chmod ugo+x $PKG/usr/bin/$ARCH-slackware-linux-$COMPILER-4.9.4
+  sed \
+    -e "s~%LIBDIRSUFFIX%~$LIBDIRSUFFIX~" \
+    -e "s~%COMPILER%~$COMPILER~" \
+    -e "s~%INSTLOC%~$INSTLOC~" \
+    < $CWD/wrapper.sh \
+    > $PKG/usr/bin/$ARCH-slackware-linux-$COMPILER-$VERSION
+  chmod ugo+x $PKG/usr/bin/$ARCH-slackware-linux-$COMPILER-$VERSION
 done
-ln -s $ARCH-slackware-linux-gcc-4.9.4 $PKG/usr/bin/gcc-4.9.4
-ln -s $ARCH-slackware-linux-g++-4.9.4 $PKG/usr/bin/g++-gcc-4.9.4
+ln -s $ARCH-slackware-linux-gcc-$VERSION $PKG/usr/bin/gcc-$VERSION
+ln -s $ARCH-slackware-linux-g++-$VERSION $PKG/usr/bin/g++-gcc-$VERSION
 
 mv -f $PKG$INSTLOC/share/man $PKG/usr/man
 cd $PKG/usr/man/man7
 # we do not need these; according to "diff" there is no difference between these files
 # and the ones Slackware ships with; except this man page named "gfdl.7"; which shall be
-# saved; and renamed so that it does not conflict with Slackware's.  
-find . ! -name 'gfdl.7' -exec rm  -rf {} \;
+# saved; and renamed so that it does not conflict with Slackware's.
+find . ! -name 'gfdl.7' -exec rm -rf {} \;
 mv gfdl.7 gfdl494.7
 find $PKG/usr/man -type f -exec gzip -9 {} \;
 for i in $( find $PKG/usr/man -type l ) ; do ln -s $( readlink $i ).gz $i.gz ; rm $i ; done
@@ -172,7 +180,7 @@ mv -f $PKG$INSTLOC/share/info $PKG/usr/info
 rm -f $PKG/usr/info/dir
 cd $PKG/usr/info
 #rename the .info files so they do not conflict with Slackware's own .info files.
-for info in *.info; do mv "$info" "${info%.*}-4.9.4.info"; done
+for info in *.info; do mv "$info" "${info%.*}-$VERSION.info"; done
 gzip -9 $PKG/usr/info/*.info*
 
 mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION