From 35b7555399d9058f0b734a951c9d1339ff2576e3 Mon Sep 17 00:00:00 2001
From: Michael Vetter <jubalh@iodoru.org>
Date: Wed, 23 Feb 2022 12:50:03 +0100
Subject: [PATCH] build: Use CPPFLAGS for obsd

Fixing build failure detected by sr.ht for OpenBSD:

```
src/ui/inputwin.c: In function '_inp_rl_startup_hook':
src/ui/inputwin.c:444:5: error: implicit declaration of function 'rl_bind_keyseq'; did you mean 'rl_bind_key'? [-Werror=implicit-function-declaration]
  444 |     rl_bind_keyseq("\\e1", _inp_rl_win_1_handler);
      |     ^~~~~~~~~~~~~~
      |     rl_bind_key
cc1: all warnings being treated as errors
```

Seems like both OSX and OpenBSD need CPPFLAGS here.
---
 configure.ac | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index c2878e5e..5f543c4c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -220,7 +220,7 @@ AS_IF([test "x$PLATFORM" = xosx],
       [test "x$PLATFORM" = xopenbsd],
       [AC_CHECK_FILE([/usr/local/include/ereadline],
           [LIBS="-lereadline $LIBS"
-              AM_CFLAGS="-I/usr/local/include/ereadline $AM_CFLAGS"
+              AM_CPPFLAGS="-I/usr/local/include/ereadline $AM_CFLAGS"
               AM_LDFLAGS="-L/usr/local/lib $AM_LDFLAGS"
               AC_SUBST(AM_LDFLAGS)])],