Add macro GIT_PARSE_WITH_SET_MAKE_VAR to configure.ac to allow --with
style options that set values for variables used during the make
process.
Arguments are the $name part of --with-$name, the name of
the variable to set in the Makefile (config.mak.autogen) and
the help text for the option.
Signed-off-by: Ben Walton <bwalton@xxxxxxxxxxxxxxxxxx>
---
configure.ac | 20 ++++++++++++++++++++
1 files changed, 20 insertions(+), 0 deletions(-)
diff --git a/configure.ac b/configure.ac
index 84b6cf4..a305d0b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -68,6 +68,26 @@ else \
GIT_CONF_APPEND_LINE(${PACKAGE}DIR=$withval); \
fi \
])# GIT_PARSE_WITH
+#
+# GIT_PARSE_WITH_SET_MAKE_VAR(WITHNAME, VAR, HELP_TEXT)
+# ---------------------
+# Set VAR to the value specied by --with-WITHNAME.
+# No verification of arguments is performed, but warnings are issued
+# if either 'yes' or 'no' is specified.
+# HELP_TEXT is presented when --help is called.
+# This is a direct way to allow setting variables in the Makefile.
+AC_DEFUN([GIT_PARSE_WITH_SET_MAKE_VAR],
+[AC_ARG_WITH([$1],
+ [AS_HELP_STRING([--with-$1=VALUE], $3)],
+ if test -n "$withval"; then \
+ if test "$withval" = "yes" -o "$withval" = "no"; then \
+ AC_MSG_WARN([You likely do not want either 'yes' or 'no' as]
+ [a value for $1 ($2). Maybe you do...?]); \
+ fi; \
+ \
+ AC_MSG_NOTICE([Setting $2 to $withval]); \
+ GIT_CONF_APPEND_LINE($2=$withval); \
+ fi)])# GIT_PARSE_WITH_SET_MAKE_VAR
dnl
dnl GIT_CHECK_FUNC(FUNCTION, IFTRUE, IFFALSE)
--
1.6.5.1
--
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