From de2f99f8c485eacd4d39c526dc4f729c5df9b96f Mon Sep 17 00:00:00 2001
From: Patrick McDermott <patrick.mcdermott@libiquity.com>
Date: Wed, 19 Apr 2023 12:23:26 -0400
Subject: build: Fail if any math functions are missing

---
diff --git a/configure.ac b/configure.ac
index 4c3588b..620a85c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -33,7 +33,9 @@ AC_PROG_CC()
 AM_PROG_CC_C_O()
 test -d "${srcdir}/.git" || CFLAGS="${save_CFLAGS}"
 
-AC_CHECK_LIB([m], [log10])
+AC_SEARCH_LIBS([log10], [m], [], AC_MSG_ERROR([missing log10]))
+AC_SEARCH_LIBS([ceil],  [m], [], AC_MSG_ERROR([missing ceil]))
+AC_SEARCH_LIBS([lrint], [m], [], AC_MSG_ERROR([missing lrint]))
 
 PKG_PROG_PKG_CONFIG()
 PKG_CHECK_MODULES([ZLIB], [zlib])
--
cgit v0.9.1