Avoid wrapping GNU sed/awk on systems where that's the default

I have no idea why, but the installed "sed" wrapper never terminates
on RHEL.  If I don't use the wrappen the the tools build fine, so this
just uses the already set autoconf variables to attempt to determine
if the system sed/awk are gsed/gawk and if they are then this avoids
using the wrappers.

There's a few oddities here:

* I have no idea why the sed wrapper fails, as it seems super safe.

* I haven't run into any awk problems, but I figured I'd treat it the
  same as it isn't any harder.

* We shouldn't have to support 10 year old distributions.

Hopefully this doesn't break anyone's builds...

1 files changed, 12 insertions, 1 deletions

diff --git a/Makefile.in b/Makefile.in
index 2b6786c..57e55ce 100755
--- a/Makefile.in
+++ b/Makefile.in
@@ -21,7 +21,18 @@ SYSROOT := $(INSTALL_DIR)/sysroot
 SHELL := /bin/sh
 AWK := @GAWK@
 SED := @GSED@
-PATH := $(INSTALL_DIR)/bin:$(builddir)/scripts/wrapper:$(PATH)
+PATH := $(INSTALL_DIR)/bin:$(PATH)
+
+# Check to see if we need wrapper scripts for awk/sed (which point to
+# gawk/gsed on platforms where these aren't the default), otherwise
+# don't override these as the wrappers don't always work.
+ifneq (@GSED@,/bin/sed)
+	PATH := $(base_dir)/sed:$(PATH)
+endif
+ifneq (@GAWK@,/usr/bin/gawk)
+	PATH := $(base_dir)/awk:$(PATH)
+endif
+
 export PATH AWK SED
 
 MULTILIB_FLAGS := @multilib_flags@