nixpkgs/pkgs/development/libraries/glibc/dont-use-system-ld-so-cache.patch

--- a/elf/Makefile
+++ b/elf/Makefile
@@ -589,13 +589,13 @@ $(objpfx)sln: $(sln-modules:%=$(objpfx)%.o)
 
 $(objpfx)ldconfig: $(ldconfig-modules:%=$(objpfx)%.o)
 
-SYSCONF-FLAGS := -D'SYSCONFDIR="$(sysconfdir)"'
-CFLAGS-ldconfig.c += $(SYSCONF-FLAGS) -D'LIBDIR="$(libdir)"' \
+PREFIX-FLAGS := -D'PREFIX="$(prefix)"'
+CFLAGS-ldconfig.c += $(PREFIX-FLAGS) -D'LIBDIR="$(libdir)"' \
 		    -D'SLIBDIR="$(slibdir)"'
 libof-ldconfig = ldconfig
-CFLAGS-dl-cache.c += $(SYSCONF-FLAGS)
-CFLAGS-cache.c += $(SYSCONF-FLAGS)
-CFLAGS-rtld.c += $(SYSCONF-FLAGS)
+CFLAGS-dl-cache.c += $(PREFIX-FLAGS)
+CFLAGS-cache.c += $(PREFIX-FLAGS)
+CFLAGS-rtld.c += $(PREFIX-FLAGS)
 
 cpp-srcs-left := $(all-rtld-routines:=.os)
 lib := rtld
--- a/elf/ldconfig.c
+++ b/elf/ldconfig.c
@@ -51,7 +51,7 @@
 #endif
 
 #ifndef LD_SO_CONF
-# define LD_SO_CONF SYSCONFDIR "/ld.so.conf"
+# define LD_SO_CONF PREFIX "/etc/ld.so.conf"
 #endif
 
 /* Get libc version number.  */
--- a/sysdeps/generic/dl-cache.h
+++ b/sysdeps/generic/dl-cache.h
@@ -28,7 +28,7 @@
 #endif
 
 #ifndef LD_SO_CACHE
-# define LD_SO_CACHE SYSCONFDIR "/ld.so.cache"
+# define LD_SO_CACHE PREFIX "/etc/ld.so.cache"
 #endif
 
 #ifndef add_system_dir