libexecinfo: enables stackprotector through hardeningEnable

The makefile patch pulled from alpinelinux used to enable
stackprotector unconditionally.  This change use the nixpkgs flag
hardeningEnable.

This is required to support platform where stackprotector has
problems.

pkgs/development/libraries/libexecinfo/30-linux-makefile.patch

@@ -0,0 +1,44 @@
+--- Makefile.orig
++++ Makefile
+@@ -23,24 +23,25 @@
+ # SUCH DAMAGE.
+ #
+ # $Id: Makefile,v 1.3 2004/07/19 05:19:55 sobomax Exp $
++#
++# Linux Makefile by Matt Smith <mcs@darkregion.net>, 2011/01/04
+ 
+-LIB=	execinfo
++CC=cc
++AR=ar
++EXECINFO_CFLAGS=$(CFLAGS) -O2 -pipe -fno-strict-aliasing -std=gnu99 -c
++EXECINFO_LDFLAGS=$(LDFLAGS)
+ 
+-SRCS=	stacktraverse.c stacktraverse.h execinfo.c execinfo.h
++all: static dynamic
+ 
+-INCS=	execinfo.h
++static:
++	$(CC) $(EXECINFO_CFLAGS) $(EXECINFO_LDFLAGS) stacktraverse.c
++	$(CC) $(EXECINFO_CFLAGS) $(EXECINFO_LDFLAGS) execinfo.c
++	$(AR) rcs libexecinfo.a stacktraverse.o execinfo.o
+ 
+-SHLIB_MAJOR=	1
+-SHLIB_MINOR=	0
++dynamic:
++	$(CC) -fpic -DPIC $(EXECINFO_CFLAGS) $(EXECINFO_LDFLAGS) stacktraverse.c -o stacktraverse.So
++	$(CC) -fpic -DPIC $(EXECINFO_CFLAGS) $(EXECINFO_LDFLAGS) execinfo.c -o execinfo.So
++	$(CC) -shared -Wl,-soname,libexecinfo.so.1 -o libexecinfo.so.1 stacktraverse.So execinfo.So
+ 
+-NOPROFILE=	yes
+-
+-DPADD=		${LIBM}
+-LDADD=		-lm
+-
+-#WARNS?=	4
+-
+-#stacktraverse.c: gen.py
+-#	./gen.py > stacktraverse.c
+-
+-.include <bsd.lib.mk>
++clean:
++	rm -rf *.o *.So *.a *.so

pkgs/development/libraries/libexecinfo/default.nix

@@ -23,14 +23,11 @@ stdenv.mkDerivation rec {
       url = "https://git.alpinelinux.org/aports/plain/main/libexecinfo/20-define-gnu-source.patch?id=730cdcef6901750f4029d4c3b8639ce02ee3ead1";
       sha256 = "1mp8mc639b0h2s69m5z6s2h3q3n1zl298j9j0plzj7f979j76302";
     })
-    (fetchpatch {
-      name = "30-linux-makefile.patch";
-      url = "https://git.alpinelinux.org/aports/plain/main/libexecinfo/30-linux-makefile.patch?id=730cdcef6901750f4029d4c3b8639ce02ee3ead1";
-      sha256 = "1jwjz22z5cjy5h2bfghn62yl9ar8jiqhdvbwrcfavv17ihbhwcaf";
-    })
+    ./30-linux-makefile.patch
   ];
 
   makeFlags = [ "CC:=$(CC)" "AR:=$(AR)" ];
+  hardeningEnable = [ "stackprotector" ];
 
   buildFlags =
       lib.optional enableStatic "static"