From c03e9b1a8e8f0897dfcbba22f73b1ff2b97a7564 Mon Sep 17 00:00:00 2001
From: Charles Kerr <charles@charleskerr.com>
Date: Sat, 21 Jan 2023 12:20:10 -0600
Subject: [PATCH] fix: largefile support cmake tests (#4627)

---
 cmake/LargeFileSupport.cmake | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/cmake/LargeFileSupport.cmake b/cmake/LargeFileSupport.cmake
index a0d59935e..426cbb048 100644
--- a/cmake/LargeFileSupport.cmake
+++ b/cmake/LargeFileSupport.cmake
@@ -7,8 +7,11 @@ if(NOT DEFINED NO_LFS_MACROS_REQUIRED)
     # We can't simply define LARGE_OFF_T to be 9223372036854775807,
     # since some C++ compilers masquerading as C compilers
     # incorrectly reject 9223372036854775807.
-    set(LFS_TEST_PROGRAM
-        "#include <sys/types.h>
+    #
+    # Begin with a linefeed to ensure the first line isn't part
+    # of the #defines below
+    set(LFS_TEST_PROGRAM "
+        #include <sys/types.h>
         #define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
         int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721 && LARGE_OFF_T % 2147483647 == 1) ? 1 : -1];
         int main() { return 0; }")