[PATCH] Add --with-snapdir configure option

[Nikola Forró]

Signed-off-by: Nikola Forró <address@hidden>
---
 configure.ac          |  1 +
 m4/man-arg-snapdir.m4 | 17 +++++++++++++++++
 src/man_db.conf.in    |  2 +-
 3 files changed, 19 insertions(+), 1 deletion(-)
 create mode 100644 m4/man-arg-snapdir.m4

diff --git a/configure.ac b/configure.ac
index 65dbeddd..225bc365 100644
--- a/configure.ac
+++ b/configure.ac
@@ -44,6 +44,7 @@ MAN_ARG_SYSTEMDTMPFILESDIR
 MAN_ARG_SYSTEMDSYSTEMUNITDIR
 MAN_ARG_MANDIRS
 MAN_ARG_MANUAL
+MAN_ARG_SNAPDIR
 
 # Check $PATH for the following programs and append suitable options.
 AC_PROG_CC
diff --git a/m4/man-arg-snapdir.m4 b/m4/man-arg-snapdir.m4
new file mode 100644
index 00000000..3cf666aa
--- /dev/null
+++ b/m4/man-arg-snapdir.m4
@@ -0,0 +1,17 @@
+# man-arg-snapdir.m4 serial 1
+dnl MAN_ARG_SNAPDIR
+dnl Add a --with-snapdir option.
+
+AC_DEFUN([MAN_ARG_SNAPDIR],
+[
+AC_ARG_WITH([snapdir],
+[AS_HELP_STRING([--with-snapdir=DIR], [use snap system directory DIR 
[DIR=/snap]])],
+       [if test "$withval" = "yes" || test "$withval" = "no"
+        then
+               AC_MSG_ERROR([--with-snapdir requires an argument])
+        else
+               snapdir="$withval"
+        fi],
+       [: ${snapdir=/snap}])
+AC_SUBST([snapdir])
+])
diff --git a/src/man_db.conf.in b/src/man_db.conf.in
index 2942000f..042fc599 100644
--- a/src/man_db.conf.in
+++ b/src/man_db.conf.in
@@ -69,7 +69,7 @@ MANDB_MAP     /usr/local/man          /var/cache/man/oldlocal
 MANDB_MAP      /usr/local/share/man    /var/cache/man/local
 MANDB_MAP      /usr/X11R6/man          /var/cache/man/X11R6
 MANDB_MAP      /opt/man                /var/cache/man/opt
-MANDB_MAP      /snap/man               /var/cache/man/snap
+MANDB_MAP      @snapdir@/man           /var/cache/man/snap
 #
 #---------------------------------------------------------
 # Program definitions.  These are commented out by default as the value
-- 
2.21.1