@@ -, +, @@ 
    Don't rely on support for indirect expansion in the shell
    
    POSIX does not define the indirect expansion syntax. Moreover, if going
    to the trouble of executing Perl, one may as well take full advantage of
    it. Address the issue by first having the shell export the variable.
    Next, have Perl perform the replacement without utilising any form of
    code injection. Instead, export 'var' into Perl's environment. That
    way, Perl can reference the variable name as $ENV{var} and its value as
    $ENV{$ENV{var}}.
    
    Signed-off-by: Kerin Millar <kfm@plushkava.net>
    Closes: https://bugs.gentoo.org/715202
    Closes: https://github.com/dell/libsmbios/issues/89
--- a/Makefile-std	
+++ a/Makefile-std	
@@ -38,7 +38,7 @@ install-data-hook:
 	    file=$(DESTDIR)/$$i                     ;\
 	    for var in $(REPLACE_VARS)	;\
 	    do	\
-	        perl -p -i -e "s|^$$var\s*=.*|$$var=\"$${!var}\"|"  $$file;\
+	        var="$$var" perl -p -i -e 's|^\Q$$ENV{var}\E\s*=.*|$$ENV{var}="$$ENV{$$ENV{var}}"|'  $$file;\
 	    done	;\
 	done
 
@@ -48,7 +48,7 @@ install-exec-hook:
 	    file=$(DESTDIR)/$$i                     ;\
 	    for var in $(REPLACE_VARS)	;\
 	    do	\
-	        perl -p -i -e "s|^$$var\s*=.*|$$var=\"$${!var}\"|"  $$file;\
+	        var="$$var" perl -p -i -e 's|^\Q$$ENV{var}\E\s*=.*|$$ENV{var}="$$ENV{$$ENV{var}}"|'  $$file;\
 	    done	;\
 	done
 
--- a/src/python/Makefile.am	
+++ a/src/python/Makefile.am	
@@ -29,5 +29,5 @@ src/python/_vars.py: src/python/libsmbios_c/_vars.py  configure Makefile config.
 	cp $< $@
 	for var in $(REPLACE_VARS)	;\
 	do	\
-		perl -p -i -e "s|^$$var\s*=.*|$$var=\"$${!var}\"|"  $@;\
+		var="$$var" perl -p -i -e 's|^\Q$$ENV{var}\E\s*=.*|$$ENV{var}="$$ENV{$$ENV{var}}"|'  $@;\
 	done