configure: s/#if/#ifdef/ so it still works if HAVE_XXX is not defined.
diff --git a/configure.ac b/configure.ac
index b23a586..3234493 100644
--- a/configure.ac
+++ b/configure.ac
@@ -329,31 +329,31 @@
AC_CHECK_HEADERS([sys/mount.h sys/statfs.h sys/user.h sys/vfs.h],,,
[#include <sys/types.h>
- #if HAVE_SYS_PARAM_H
+ #ifdef HAVE_SYS_PARAM_H
# include <sys/param.h>
#endif])
AC_CHECK_HEADERS([netinet/in_pcb.h netinet/ip_var.h net/if.h net/if_arp.h net/if_dl.h net/if_types.h net/route.h netipx/ipx.h],,,
[#include <sys/types.h>
- #if HAVE_SYS_SOCKET_H
+ #ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
- #if HAVE_SYS_SOCKETVAR_H
+ #ifdef HAVE_SYS_SOCKETVAR_H
# include <sys/socketvar.h>
#endif
- #if HAVE_NETINET_IN_H
+ #ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif])
AC_CHECK_HEADERS([netinet/tcp_var.h],,,
[#include <sys/types.h>
- #if HAVE_SYS_SOCKET_H
+ #ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
- #if HAVE_SYS_SOCKETVAR_H
+ #ifdef HAVE_SYS_SOCKETVAR_H
# include <sys/socketvar.h>
#endif
- #if HAVE_NETINET_IN_H
+ #ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
#ifdef HAVE_NETINET_TCP_H
@@ -365,19 +365,19 @@
#ifdef HAVE_ASM_TYPES_H
# include <asm/types.h>
#endif
- #if HAVE_SYS_SOCKET_H
+ #ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif])
AC_CHECK_HEADERS([resolv.h],,,
[#include <sys/types.h>
- #if HAVE_SYS_SOCKET_H
+ #ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
- #if HAVE_NETINET_IN_H
+ #ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
- #if HAVE_ARPA_NAMESER_H
+ #ifdef HAVE_ARPA_NAMESER_H
# include <arpa/nameser.h>
#endif])
@@ -385,7 +385,7 @@
AC_CHECK_HEADERS([sys/thr.h],,,
[#include <sys/types.h>
-#if HAVE_UCONTEXT_H
+#ifdef HAVE_UCONTEXT_H
#include <ucontext.h>
#endif])
@@ -969,8 +969,8 @@
freetype/ftwinfnt.h \
freetype/ftmodapi.h \
freetype/internal/sfnt.h,,,
- [#if HAVE_FT2BUILD_H
- #include <ft2build.h>
+ [#ifdef HAVE_FT2BUILD_H
+ # include <ft2build.h>
#endif])
AC_PREPROC_IFELSE([AC_LANG_SOURCE([[#include <ft2build.h>
#include <freetype/fttrigon.h>]])],[AC_DEFINE(HAVE_FREETYPE_FTTRIGON_H, 1,