commit ae00c100acdb4d2d3f99524d30258d07eefcfb6d
from: Alexander Barton <alex@barton.de>
date: Sun Nov 10 16:08:51 2013 UTC

Only use unsetenv() when it is available

AIX 4.3 dosn't support it, for example.

commit - 61d1c864c55291c1f5f81f284e984b044fe2722f
commit + ae00c100acdb4d2d3f99524d30258d07eefcfb6d
blob - e3f51cf0268a086a49c4baddd34a723cc75106ea
blob + b9e92704e9fab7bcb1dfac7d36d63ffb2a8c0a6d
--- configure.ng
+++ configure.ng
@@ -189,7 +189,7 @@ AC_CHECK_FUNCS([ \
 AC_CHECK_FUNCS_ONCE([ \
 	arc4random arc4random_stir gai_strerror getaddrinfo getnameinfo inet_aton
 	sigaction sigprocmask snprintf vsnprintf strdup strndup strlcpy strlcat \
-	strtok_r waitpid])
+	strtok_r unsetenv waitpid])
 
 # -- Configuration options --
 
blob - 324fa4219a9d204723572e1eeb8fbf8ea1badbee
blob + e8bfcf1c70cbbb9e848061eff7b151a2a7c8f854
--- src/ngircd/conn.c
+++ src/ngircd/conn.c
@@ -152,7 +152,9 @@ my_sd_listen_fds(void)
 	if (!e || !*e)
 		return -1;
 	count = atoi(e);
+#ifdef HAVE_UNSETENV
 	unsetenv("LISTEN_FDS");
+#endif
 
 	return count;
 }