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-rw-r--r--ext/etc/extconf.rb4
1 files changed, 3 insertions, 1 deletions
diff --git a/ext/etc/extconf.rb b/ext/etc/extconf.rb
index 2914bfb196..7293d7b805 100644
--- a/ext/etc/extconf.rb
+++ b/ext/etc/extconf.rb
@@ -4,7 +4,9 @@ have_library("sun", "getpwnam") # NIS (== YP) interface for IRIX 4
a = have_func("getlogin")
b = have_func("getpwent")
c = have_func("getgrent")
-if a or b or c
+sysconfdir = RbConfig.expand(RbConfig::MAKEFILE_CONFIG["sysconfdir"].dup, "prefix"=>"")
+$defs.push("-DSYSCONFDIR=#{Shellwords.escape(sysconfdir.dump)}")
+if a or b or c or sysconfdir
have_struct_member('struct passwd', 'pw_gecos', 'pwd.h')
have_struct_member('struct passwd', 'pw_change', 'pwd.h')
have_struct_member('struct passwd', 'pw_quota', 'pwd.h')