[PATCH v3 18/18] Makefile & configure: make PCRE v2 the default PCRE implementation

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Change the USE_LIBPCRE=YesPlease & --with-libpcre flags to the
Makefile & configure script, respectively, to mean use PCRE v2, not
PCRE v1. The legacy library is still available on request via
USE_LIBPCRE1=YesPlease or --with-libpcre1.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@xxxxxxxxx>
---
 Makefile     | 21 ++++++++++-----------
 configure.ac | 18 +++++++++---------
 2 files changed, 19 insertions(+), 20 deletions(-)

diff --git a/Makefile b/Makefile
index a792f206b9..42b09f9632 100644
--- a/Makefile
+++ b/Makefile
@@ -29,10 +29,10 @@ all::
 # Perl-compatible regular expressions instead of standard or extended
 # POSIX regular expressions.
 #
-# Currently USE_LIBPCRE is a synonym for USE_LIBPCRE1, define
-# USE_LIBPCRE2 instead if you'd like to use version 2 of the PCRE
-# library. The USE_LIBPCRE flag will likely be changed to mean v2 by
-# default in future releases.
+# The USE_LIBPCRE flag is a synonym for USE_LIBPCRE2, in previous
+# versions it meant the same thing USE_LIBPCRE1 does now. Define
+# USE_LIBPCRE1 instead if you'd like to use the legacy version 1 of
+# the PCRE library.
 #
 # Define LIBPCREDIR=/foo/bar if your PCRE header and library files are in
 # /foo/bar/include and /foo/bar/lib directories.
@@ -1090,18 +1090,17 @@ ifdef NO_LIBGEN_H
 	COMPAT_OBJS += compat/basename.o
 endif
 
-USE_LIBPCRE1 ?= $(USE_LIBPCRE)
-
-ifneq (,$(USE_LIBPCRE1))
-	ifdef USE_LIBPCRE2
-$(error Only set USE_LIBPCRE1 (or its alias USE_LIBPCRE) or USE_LIBPCRE2, not both!)
-	endif
+USE_LIBPCRE2 ?= $(USE_LIBPCRE)
 
+ifdef USE_LIBPCRE1
 	BASIC_CFLAGS += -DUSE_LIBPCRE1
 	EXTLIBS += -lpcre
 endif
 
-ifdef USE_LIBPCRE2
+ifneq (,$(USE_LIBPCRE2))
+	ifdef USE_LIBPCRE1
+$(error Only set USE_LIBPCRE2 (or its alias USE_LIBPCRE) or USE_LIBPCRE1, not both!)
+	endif
 	BASIC_CFLAGS += -DUSE_LIBPCRE2
 	EXTLIBS += -lpcre2-8
 endif
diff --git a/configure.ac b/configure.ac
index 11d083fbe0..f9659daeb7 100644
--- a/configure.ac
+++ b/configure.ac
@@ -255,25 +255,25 @@ GIT_PARSE_WITH([openssl]))
 # Perl-compatible regular expressions instead of standard or extended
 # POSIX regular expressions.
 #
-# Currently USE_LIBPCRE is a synonym for USE_LIBPCRE1, define
-# USE_LIBPCRE2 instead if you'd like to use version 2 of the PCRE
-# library. The USE_LIBPCRE flag will likely be changed to mean v2 by
-# default in future releases.
+# The USE_LIBPCRE flag is a synonym for USE_LIBPCRE2, in previous
+# versions it meant the same thing USE_LIBPCRE1 does now. Define
+# USE_LIBPCRE1 instead if you'd like to use the legacy version 1 of
+# the PCRE library.
 #
 # Define LIBPCREDIR=/foo/bar if your PCRE header and library files are in
 # /foo/bar/include and /foo/bar/lib directories.
 #
 AC_ARG_WITH(libpcre,
-AS_HELP_STRING([--with-libpcre],[synonym for --with-libpcre1]),
+AS_HELP_STRING([--with-libpcre],[synonym for --with-libpcre2]),
     if test "$withval" = "no"; then
-	USE_LIBPCRE1=
+	USE_LIBPCRE2=
     elif test "$withval" = "yes"; then
-	USE_LIBPCRE1=YesPlease
+	USE_LIBPCRE2=YesPlease
     else
-	USE_LIBPCRE1=YesPlease
+	USE_LIBPCRE2=YesPlease
 	LIBPCREDIR=$withval
 	AC_MSG_NOTICE([Setting LIBPCREDIR to $LIBPCREDIR])
-        dnl USE_LIBPCRE1 can still be modified below, so don't substitute
+        dnl USE_LIBPCRE2 can still be modified below, so don't substitute
         dnl it yet.
 	GIT_CONF_SUBST([LIBPCREDIR])
     fi)
-- 
2.11.0




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