diff --git a/poky/meta/recipes-devtools/gcc/gcc-runtime.inc b/poky/meta/recipes-devtools/gcc/gcc-runtime.inc
index ba767e1..a5c2600 100644
--- a/poky/meta/recipes-devtools/gcc/gcc-runtime.inc
+++ b/poky/meta/recipes-devtools/gcc/gcc-runtime.inc
@@ -114,7 +114,7 @@
 			ln -s ${TARGET_SYS} ${D}${includedir}/c++/${BINV}/${TARGET_ARCH}${TARGET_VENDOR}-linux
 		fi
 	elif [ "${TARGET_VENDOR_MULTILIB_ORIGINAL}" != "" -a "${TARGET_VENDOR}" != "${TARGET_VENDOR_MULTILIB_ORIGINAL}" ]; then
-		mkdir ${D}${includedir}/c++/${BINV}/${TARGET_ARCH}${TARGET_VENDOR_MULTILIB_ORIGINAL}-linux
+		mkdir ${D}${includedir}/c++/${BINV}/${TARGET_ARCH}${TARGET_VENDOR_MULTILIB_ORIGINAL}-${TARGET_OS}
 		ln -s ../${TARGET_SYS}/bits ${D}${includedir}/c++/${BINV}/${TARGET_ARCH}${TARGET_VENDOR_MULTILIB_ORIGINAL}-${TARGET_OS}/bits
 		ln -s ../${TARGET_SYS}/ext ${D}${includedir}/c++/${BINV}/${TARGET_ARCH}${TARGET_VENDOR_MULTILIB_ORIGINAL}-${TARGET_OS}/ext
 	fi
diff --git a/poky/meta/recipes-devtools/go/go-cross.inc b/poky/meta/recipes-devtools/go/go-cross.inc
index 29ce7f6..3d344a7 100644
--- a/poky/meta/recipes-devtools/go/go-cross.inc
+++ b/poky/meta/recipes-devtools/go/go-cross.inc
@@ -14,6 +14,7 @@
 export GOMIPS = "${TARGET_GOMIPS}"
 export GOROOT_BOOTSTRAP = "${STAGING_LIBDIR_NATIVE}/go"
 export GOROOT_FINAL = "${libdir}/go"
+export GOCACHE = "${B}/.cache"
 CC = "${@d.getVar('BUILD_CC').strip()}"
 
 do_configure[noexec] = "1"
diff --git a/poky/meta/recipes-devtools/go/go-runtime.inc b/poky/meta/recipes-devtools/go/go-runtime.inc
index c219aa3..e282195 100644
--- a/poky/meta/recipes-devtools/go/go-runtime.inc
+++ b/poky/meta/recipes-devtools/go/go-runtime.inc
@@ -15,6 +15,7 @@
 export CGO_CPPFLAGS = "${CPPFLAGS}"
 export CGO_CXXFLAGS = "${CXXFLAGS}"
 export CGO_LDFLAGS = "${LDFLAGS}"
+export GOCACHE = "${B}/.cache"
 
 GO_EXTLDFLAGS ?= "${HOST_CC_ARCH}${TOOLCHAIN_OPTIONS} ${LDFLAGS}"
 GO_SHLIB_LDFLAGS ?= '-ldflags="--linkmode=external -extldflags '${GO_EXTLDFLAGS}'"'
diff --git a/poky/meta/recipes-devtools/go/go-target.inc b/poky/meta/recipes-devtools/go/go-target.inc
index 379f87b..91efd3e 100644
--- a/poky/meta/recipes-devtools/go/go-target.inc
+++ b/poky/meta/recipes-devtools/go/go-target.inc
@@ -10,6 +10,7 @@
 export GOMIPS = "${TARGET_GOMIPS}"
 export GOROOT_BOOTSTRAP = "${STAGING_LIBDIR_NATIVE}/go"
 export GOROOT_FINAL = "${libdir}/go"
+export GOCACHE = "${B}/.cache"
 GO_LDFLAGS = ""
 GO_LDFLAGS_class-nativesdk = "-linkmode external"
 export GO_LDFLAGS
diff --git a/poky/meta/recipes-devtools/perl/files/0001-enc2xs-Add-environment-variable-to-suppress-comments.patch b/poky/meta/recipes-devtools/perl/files/0001-enc2xs-Add-environment-variable-to-suppress-comments.patch
new file mode 100644
index 0000000..07f1531
--- /dev/null
+++ b/poky/meta/recipes-devtools/perl/files/0001-enc2xs-Add-environment-variable-to-suppress-comments.patch
@@ -0,0 +1,30 @@
+From 31a2c5555f9ef32f35d7d5ce1fd09a010ba5f5c6 Mon Sep 17 00:00:00 2001
+From: Joshua Watt <JPEWhacker@gmail.com>
+Date: Mon, 17 Jun 2019 10:47:15 -0500
+Subject: [PATCH 1/2] enc2xs: Add environment variable to suppress comments
+
+Comment generation in enc2xs can now be suppressed by setting the
+ENC2XS_NO_COMMENTS environment variable. This allows enc2xs to produce
+reproducible output by omitting the name of the generating program.
+
+Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
+Upstream-status: Accepted [https://github.com/dankogai/p5-encode/pull/145]
+---
+ cpan/Encode/bin/enc2xs | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/cpan/Encode/bin/enc2xs b/cpan/Encode/bin/enc2xs
+index 619b64b757..bfce9ee735 100644
+--- a/cpan/Encode/bin/enc2xs
++++ b/cpan/Encode/bin/enc2xs
+@@ -144,6 +144,7 @@ getopts('CM:SQqOo:f:n:v',\%opt);
+ $opt{M} and make_makefile_pl($opt{M}, @ARGV);
+ $opt{C} and make_configlocal_pm($opt{C}, @ARGV);
+ $opt{v} ||= $ENV{ENC2XS_VERBOSE};
++$opt{q} ||= $ENV{ENC2XS_NO_COMMENTS};
+ 
+ sub verbose {
+     print STDERR @_ if $opt{v};
+-- 
+2.21.0
+
diff --git a/poky/meta/recipes-devtools/perl/files/0002-Constant-Fix-up-shebang.patch b/poky/meta/recipes-devtools/perl/files/0002-Constant-Fix-up-shebang.patch
new file mode 100644
index 0000000..e70ff67
--- /dev/null
+++ b/poky/meta/recipes-devtools/perl/files/0002-Constant-Fix-up-shebang.patch
@@ -0,0 +1,32 @@
+From 260ebd15e16cd86b9b58e5c5f3a496b3853ca46d Mon Sep 17 00:00:00 2001
+From: Joshua Watt <JPEWhacker@gmail.com>
+Date: Mon, 17 Jun 2019 10:47:23 -0500
+Subject: [PATCH 2/2] Constant: Fix up shebang
+
+The instructions indicate that the script should be explicitly passed to
+"perl -x", so automatically setting the #! to be ^X is unnecessary and
+makes the file non-reproducible when building because ^X could be the
+absolute path to miniperl.
+
+Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
+Upstream-status: Submitted [https://rt.cpan.org/Public/Bug/Display.html?id=129866]
+---
+ cpan/ExtUtils-Constant/lib/ExtUtils/Constant/XS.pm | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/cpan/ExtUtils-Constant/lib/ExtUtils/Constant/XS.pm b/cpan/ExtUtils-Constant/lib/ExtUtils/Constant/XS.pm
+index 14eb809714..d4d074e121 100644
+--- a/cpan/ExtUtils-Constant/lib/ExtUtils/Constant/XS.pm
++++ b/cpan/ExtUtils-Constant/lib/ExtUtils/Constant/XS.pm
+@@ -219,7 +219,7 @@ sub dogfood {
+      Regenerate these constant functions by feeding this entire source file to
+      perl -x
+ 
+-#!$^X -w
++#!/usr/bin/env perl -x -w
+ use ExtUtils::Constant qw (constant_types C_constant XS_constant);
+ 
+ EOT
+-- 
+2.21.0
+
diff --git a/poky/meta/recipes-devtools/perl/perl-ptest.inc b/poky/meta/recipes-devtools/perl/perl-ptest.inc
index 9dd9b7d..7152057 100644
--- a/poky/meta/recipes-devtools/perl/perl-ptest.inc
+++ b/poky/meta/recipes-devtools/perl/perl-ptest.inc
@@ -2,6 +2,9 @@
 
 SRC_URI += "file://run-ptest \
            "
+
+DEBUG_PREFIX_MAP_REGEX = "${@'\\|'.join(d.getVar('DEBUG_PREFIX_MAP').split())}"
+
 do_install_ptest () {
 	mkdir -p ${D}${PTEST_PATH}
 	sed -e "s:\/usr\/local:${bindir}:g" -i cpan/version/t/*
@@ -13,7 +16,7 @@
 	    --exclude='win32/config.*' --exclude=plan9 --exclude=README.plan9 --exclude=perlplan9.pod --exclude=Configure \
 	    --exclude=veryclean.sh --exclude=realclean.sh  --exclude=getioctlsizes \
 	    --exclude=dl_aix.xs --exclude=sdbm.3 --exclude='cflags.SH' --exclude=makefile.old \
-		--exclude=miniperl --exclude=generate_uudmap --exclude=patches * | ( cd ${D}${PTEST_PATH} && tar -x )
+		--exclude=miniperl --exclude=generate_uudmap --exclude=patches --exclude='config.log' * | ( cd ${D}${PTEST_PATH} && tar -x )
 
 	ln -sf ${bindir}/perl ${D}${PTEST_PATH}/t/perl
 
@@ -21,12 +24,12 @@
 	find "${D}${PTEST_PATH}" \
 	     \( -name '*.PL' -o -name 'myconfig' -o -name 'cflags' -o -name '*.pl' -o -name '*.sh' -o -name '*.pm' \
 	     -o -name 'h2xs' -o -name 'h2ph' \
-	     -o -name '*.h' -o -name 'config.sh-*' -o -name 'pod2man'  -o -name 'pod2text' \) \
+	     -o -name '*.h' -o -name 'config.sh-*' -o -name 'pod2man'  -o -name 'pod2text' -o -name 'Makefile.config' \) \
 	    -type f -exec sed -i \
 	       -e "s,${D},,g" \
 	       -e "s,--sysroot=${STAGING_DIR_HOST},,g" \
 	       -e "s,-isystem${STAGING_INCDIR} ,,g" \
-	       -e 's|${DEBUG_PREFIX_MAP}||g' \
+	       -e 's^${DEBUG_PREFIX_MAP_REGEX}^^g' \
 	       -e "s,${STAGING_BINDIR_NATIVE}/perl-native/,${bindir}/,g" \
 	       -e "s,${STAGING_LIBDIR},${libdir},g" \
 	       -e "s,${STAGING_BINDIR},${bindir},g" \
diff --git a/poky/meta/recipes-devtools/perl/perl_5.30.0.bb b/poky/meta/recipes-devtools/perl/perl_5.30.0.bb
index b18a6b6..e366429 100644
--- a/poky/meta/recipes-devtools/perl/perl_5.30.0.bb
+++ b/poky/meta/recipes-devtools/perl/perl_5.30.0.bb
@@ -19,6 +19,8 @@
            file://perl-dynloader.patch \
            file://0001-configure_path.sh-do-not-hardcode-prefix-lib-as-libr.patch \
            file://fix-setgroup.patch \
+           file://0001-enc2xs-Add-environment-variable-to-suppress-comments.patch \
+           file://0002-Constant-Fix-up-shebang.patch \
            "
 SRC_URI_append_class-native = " \
            file://perl-configpm-switch.patch \
@@ -37,6 +39,9 @@
 
 PERL_LIB_VER = "${@'.'.join(d.getVar('PV').split('.')[0:2])}.0"
 
+# Don't generate comments in enc2xs output files. They are not reproducible
+export ENC2XS_NO_COMMENTS = "1"
+
 do_unpack_append() {
     bb.build.exec_func('do_copy_perlcross', d)
 }
diff --git a/poky/meta/recipes-devtools/python/python3/reformat_sysconfig.py b/poky/meta/recipes-devtools/python/python3/reformat_sysconfig.py
new file mode 100644
index 0000000..c416431
--- /dev/null
+++ b/poky/meta/recipes-devtools/python/python3/reformat_sysconfig.py
@@ -0,0 +1,21 @@
+#! /usr/bin/env python3
+#
+# SPDX-License-Identifier: MIT
+#
+# Copyright 2019 by Garmin Ltd. or its subsidiaries
+#
+# A script to reformat python sysconfig
+
+import sys
+import pprint
+l = {}
+g = {}
+with open(sys.argv[1], 'r') as f:
+    exec(f.read(), g, l)
+
+with open(sys.argv[1], 'w') as f:
+    for k in sorted(l.keys()):
+        f.write('%s = ' % k)
+        pprint.pprint(l[k], stream=f, width=sys.maxsize)
+        f.write('\n')
+
diff --git a/poky/meta/recipes-devtools/python/python3_3.7.3.bb b/poky/meta/recipes-devtools/python/python3_3.7.3.bb
index 8e77dbe..3409d94 100644
--- a/poky/meta/recipes-devtools/python/python3_3.7.3.bb
+++ b/poky/meta/recipes-devtools/python/python3_3.7.3.bb
@@ -25,6 +25,7 @@
            file://0001-Makefile-fix-Issue36464-parallel-build-race-problem.patch \
 	   file://0001-bpo-36852-proper-detection-of-mips-architecture-for-.patch \
 	   file://crosspythonpath.patch \
+           file://reformat_sysconfig.py \
            "
 
 SRC_URI_append_class-native = " \
@@ -165,6 +166,12 @@
                 ${PKGD}/${libdir}/python${PYTHON_MAJMIN}/_sysconfigdata*.py \
                 ${PKGD}/${bindir}/python${PYTHON_BINABI}-config
 
+        # Reformat _sysconfigdata after modifying it so that it remains
+        # reproducible
+        for c in ${PKGD}/${libdir}/python${PYTHON_MAJMIN}/_sysconfigdata*.py; do
+            python3 ${WORKDIR}/reformat_sysconfig.py $c
+        done
+
         # Recompile _sysconfigdata after modifying it
         cd ${PKGD}
         sysconfigfile=`find . -name _sysconfigdata_*.py`