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The following commit(s) were added to refs/heads/branch-4.2 by this push:
new 3db9135cd65 branch-4.2: [fix](build) Load float.h before macOS system
headers #69136 (#69185)
3db9135cd65 is described below
commit 3db9135cd65db4206a53a7356c3284330629a778
Author: github-actions[bot]
<41898282+github-actions[bot]@users.noreply.github.com>
AuthorDate: Fri Oct 16 23:34:27 2026 +0800
branch-4.2: [fix](build) Load float.h before macOS system headers #69136
(#69185)
Cherry-picked from #69136
Co-authored-by: zy-kkk <[email protected]>
---
be/CMakeLists.txt | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/be/CMakeLists.txt b/be/CMakeLists.txt
index 47e69d3907e..d165c3e57b8 100644
--- a/be/CMakeLists.txt
+++ b/be/CMakeLists.txt
@@ -390,6 +390,10 @@ add_definitions(-DHAVE_INTTYPES_H -DHAVE_NETINET_IN_H)
# Mac specific definitions - needed for system headers and third-party libs
if (OS_MACOSX)
add_definitions(-D_DARWIN_C_SOURCE)
+ # macOS 27's math.h requests only INFINITY/NAN from float.h. libc++'s
+ # float.h include guard then hides the remaining macros on later includes
+ # (e.g. DBL_EPSILON in S2). Load the full header before any source or PCH.
+ add_compile_options("$<$<COMPILE_LANGUAGE:CXX>:SHELL:-include float.h>")
endif()
if (RECORD_COMPILER_SWITCHES)
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