Clean up Makefile "warning" clutter when makeopts doesn't exist.

Review: https://reviewboard.asterisk.org/r/2304


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@384989 65c4cc65-6c06-0410-ace0-fbb531ad65f3

4 files changed, 12 insertions, 3 deletions

diff --git a/build_tools/make_buildopts_h b/build_tools/make_buildopts_h
index 4f02896e4..55d08ba71 100755
--- a/build_tools/make_buildopts_h
+++ b/build_tools/make_buildopts_h
@@ -1,5 +1,8 @@
 #!/bin/sh
 
+GREP=${GREP:-grep}
+MD5=${MD5:-md5sum}
+
 cat << END
 /*
  * buildopts.h 
diff --git a/build_tools/make_linker_version_script b/build_tools/make_linker_version_script
index 871ff4724..5d6bd42f3 100755
--- a/build_tools/make_linker_version_script
+++ b/build_tools/make_linker_version_script
@@ -1,5 +1,6 @@
 #!/bin/sh
 
+AWK=${AWK:-awk}
+
 test -f ${1}.exports.in && ${AWK} "{sub(\"LINKER_SYMBOL_PREFIX\", \"${2}\"); print;}" ${1}.exports.in > ${1}.exports && exit 0
 test -f ${1}.exports.in || rm -f ${1}.exports && cp ${3}/default.exports ${1}.exports && exit 0
-
diff --git a/build_tools/make_version b/build_tools/make_version
index de0b97e1a..d11c096eb 100755
--- a/build_tools/make_version
+++ b/build_tools/make_version
@@ -1,5 +1,9 @@
 #!/bin/sh
 
+AWK=${AWK:-awk}
+GIT=${GIT:-git}
+GREP=${GREP:-grep}
+
 if [ -f ${1}/.version ]; then
     cat ${1}/.version
 elif [ -d ${1}/.svn ]; then
@@ -92,7 +96,7 @@ elif [ -d ${1}/.git ]; then
     # If the first log commit messages indicates that this is checked into
     # subversion, we'll just use the SVN- form of the revision.
     MODIFIED=""
-    SVN_REV=`${GIT} log --pretty=full -1 | grep -F "git-svn-id:" | sed -e "s/.*\@\([^\s]*\)\s.*/\1/g"`
+    SVN_REV=`${GIT} log --pretty=full -1 | ${GREP} -F "git-svn-id:" | sed -e "s/.*\@\([^\s]*\)\s.*/\1/g"`
     if [ -z "$SVN_REV" ]; then
         VERSION=GIT-`${GIT} describe --long --always --tags --dirty=M 2> /dev/null`
         if [ $? -ne 0 ]; then
@@ -105,7 +109,7 @@ elif [ -d ${1}/.git ]; then
         fi
         echo ${VERSION}
     else
-        PARTS=`LANG=C ${GIT} log --pretty=full | grep -F "git-svn-id:" | head -1 | awk '{print $2;}' | sed -e s:^.*/svn/$2/:: | sed -e 's:/: :g' | sed -e 's/@.*$//g'`
+        PARTS=`LANG=C ${GIT} log --pretty=full | ${GREP} -F "git-svn-id:" | head -1 | ${AWK} '{print $2;}' | sed -e s:^.*/svn/$2/:: | sed -e 's:/: :g' | sed -e 's/@.*$//g'`
         BRANCH=0
         TEAM=0
         TAG=0
diff --git a/build_tools/mkpkgconfig b/build_tools/mkpkgconfig
index 08ecb924e..fd7d90686 100755
--- a/build_tools/mkpkgconfig
+++ b/build_tools/mkpkgconfig
@@ -1,5 +1,6 @@
 #!/bin/sh
 PPATH="$1"
+GREP=${GREP:-grep}
 ## Make sure we were called from Makefile
 
 if [ "x$ASTERISKVERSIONNUM" = "x" ]; then