--- origsrc/AFFLIBv3-3.7.20/lib/Makefile.am	2024-03-06 13:00:00.000000000 +0000
+++ src/AFFLIBv3-3.7.20/lib/Makefile.am	2024-03-06 13:00:00.000000000 +0000
@@ -76,7 +76,7 @@ install-exec-hook:
              then echo $(libdir) already installed ; \
              else echo installing $(libdir) in $(DESTDIR)/etc/ld.so.conf ; \
                   echo $(libdir) >> $(DESTDIR)/etc/ld.so.conf ; \
-		  PATH=$(PATH):/sbin; \
+		  PATH="$(PATH):/sbin"; \
 		  ldconfig; \
           fi ; \
 	  echo "*************************************************" ;\
--- origsrc/AFFLIBv3-3.7.20/tools/affcopy.cpp	2024-03-06 13:00:00.000000000 +0000
+++ src/AFFLIBv3-3.7.20/tools/affcopy.cpp	2024-03-06 13:00:00.000000000 +0000
@@ -146,7 +146,7 @@ void unlink_outfiles(vector<string> outf
     if(failure) exit(1);
 }
 
-#if !defined( __BSD_VISIBLE) && !defined(isnumber)
+#if (!defined(__BSD_VISIBLE) || defined(__CYGWIN__)) && !defined(isnumber)
 #define isnumber(x) isdigit(x)
 #endif