From 84ef9083fbb8435031b0f0ff8ac03324ce2d0e6f Mon Sep 17 00:00:00 2001
From: Rob Landley <rob@landley.net>
Date: Sat, 19 Jan 2019 16:58:04 -0600
Subject: Factor out scripts/portability.sh and have genconfig.sh use it to
 find sed/gsed.

---
 scripts/genconfig.sh   |  7 ++++---
 scripts/make.sh        | 13 +++++--------
 scripts/portability.sh |  6 ++++++
 3 files changed, 15 insertions(+), 11 deletions(-)
 create mode 100644 scripts/portability.sh

(limited to 'scripts')

diff --git a/scripts/genconfig.sh b/scripts/genconfig.sh
index 3887b077..c4940dfd 100755
--- a/scripts/genconfig.sh
+++ b/scripts/genconfig.sh
@@ -6,6 +6,7 @@
 mkdir -p generated
 
 source configure
+source scripts/portability.sh
 
 probecc()
 {
@@ -129,7 +130,7 @@ genconfig()
     do
       # Grab the config block for Config.in
       echo "# $i"
-      sed -n '/^\*\//q;/^config [A-Z]/,$p' $i || return 1
+      $SED -n '/^\*\//q;/^config [A-Z]/,$p' $i || return 1
       echo
     done
 
@@ -144,7 +145,7 @@ genconfig > generated/Config.in || rm generated/Config.in
 toys()
 {
   grep 'TOY(.*)' "$@" | grep -v TOYFLAG_NOFORK | grep -v "0))" | \
-    sed -En 's/([^:]*):.*(OLD|NEW)TOY\( *([a-zA-Z][^,]*) *,.*/\1:\3/p'
+    $SED -En 's/([^:]*):.*(OLD|NEW)TOY\( *([a-zA-Z][^,]*) *,.*/\1:\3/p'
 }
 
 WORKING=
@@ -163,5 +164,5 @@ done &&
 echo -e "clean::\n\trm -f $WORKING $PENDING" &&
 echo -e "list:\n\t@echo $(echo $WORKING | tr ' ' '\n' | sort | xargs)" &&
 echo -e "list_pending:\n\t@echo $(echo $PENDING | tr ' ' '\n' | sort | xargs)" &&
-echo -e ".PHONY: $WORKING $PENDING" | sed 's/ \([^ ]\)/ test_\1/g'
+echo -e ".PHONY: $WORKING $PENDING" | $SED 's/ \([^ ]\)/ test_\1/g'
 ) > .singlemake
diff --git a/scripts/make.sh b/scripts/make.sh
index 45d6f1ca..388af651 100755
--- a/scripts/make.sh
+++ b/scripts/make.sh
@@ -6,6 +6,7 @@ export LANG=c
 export LC_ALL=C
 set -o pipefail
 source ./configure
+source scripts/portability.sh
 
 [ ! -z "$CROSS_COMPILE" ] && [ ! -e "$CROSS_COMPILE"cc ] &&
   echo "missing ${CROSS_COMPILE}cc" && exit 1
@@ -15,12 +16,7 @@ source ./configure
 UNSTRIPPED="generated/unstripped/$(basename "$OUTNAME")"
 
 # Try to keep one more cc invocation going than we have processors
-[ -z "$CPUS" ] && CPUS=$(($(nproc)+1))
-
-if [ -z "$SED" ]
-then
-  [ ! -z "$(which gsed 2>/dev/null)" ] && SED=gsed || SED=sed
-fi
+[ -z "$CPUS" ] && CPUS=$(($(nproc 2>/dev/null)+1))
 
 # Respond to V= by echoing command lines as well as running them
 DOTPROG=
@@ -102,7 +98,7 @@ genbuildsh()
 }
 
 if ! cmp -s <(genbuildsh 2>/dev/null | head -n 6 ; echo LINK="'"$LDOPTIMIZE $LDFLAGS) \
-          <(head -n 7 generated/build.sh 2>/dev/null | sed '7s/ -o .*//')
+          <(head -n 7 generated/build.sh 2>/dev/null | $SED '7s/ -o .*//')
 then
   echo -n "Library probe"
 
@@ -135,7 +131,8 @@ then
 
   # This long and roundabout sed invocation is to make old versions of sed
   # happy. New ones have '\n' so can replace one line with two without all
-  # the branches and tedious mucking about with hold space.
+  # the branches and tedious mucking about with hyperspace.
+  # TODO: clean this up to use modern stuff.
 
   $SED -n \
     -e 's/^# CONFIG_\(.*\) is not set.*/\1/' \
diff --git a/scripts/portability.sh b/scripts/portability.sh
new file mode 100644
index 00000000..fddd84ec
--- /dev/null
+++ b/scripts/portability.sh
@@ -0,0 +1,6 @@
+# sourced to find alternate names for things
+
+if [ -z "$SED" ]
+then
+  [ ! -z "$(which gsed 2>/dev/null)" ] && SED=gsed || SED=sed
+fi
-- 
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