Module Name:    src
Committed By:   rillig
Date:           Sat Sep 10 16:20:04 UTC 2022

Modified Files:
        src/usr.bin/make/unit-tests: Makefile

Log Message:
tests/make: be more specific about the egrep compatibility


To generate a diff of this commit:
cvs rdiff -u -r1.325 -r1.326 src/usr.bin/make/unit-tests/Makefile

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

Modified files:

Index: src/usr.bin/make/unit-tests/Makefile
diff -u src/usr.bin/make/unit-tests/Makefile:1.325 src/usr.bin/make/unit-tests/Makefile:1.326
--- src/usr.bin/make/unit-tests/Makefile:1.325	Fri Sep  9 18:36:15 2022
+++ src/usr.bin/make/unit-tests/Makefile	Sat Sep 10 16:20:04 2022
@@ -1,4 +1,4 @@
-# $NetBSD: Makefile,v 1.325 2022/09/09 18:36:15 sjg Exp $
+# $NetBSD: Makefile,v 1.326 2022/09/10 16:20:04 rillig Exp $
 #
 # Unit tests for make(1)
 #
@@ -673,11 +673,13 @@ TMPDIR:=	/tmp/uid${.MAKE.UID}
 _!= mkdir -p ${TMPDIR}
 .endif
 
-# Some systems have deprecated egrep for grep -E
-# but not everyone supports that
+# Some Linux systems such as Fedora have deprecated egrep in favor of grep -E.
 .if ${.MAKE.OS:NLinux} == ""
 EGREP= grep -E
 .endif
+# Keep the classical definition for all other systems.  Just as the bmake code
+# is kept compatible with C90, the tests are kept compatible with systems that
+# are several decades old and don't follow modern POSIX standards.
 EGREP?= egrep
 
 MAKE_TEST_ENV=  EGREP="${EGREP}"

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