From 95b4c9b42d0c4d160b99745be55659cf54da34ed Mon Sep 17 00:00:00 2001
From: Matt Pharr <matt@pharr.org>
Date: Wed, 21 Oct 2020 16:26:42 -0700
Subject: [PATCH] Pass -fkeep-inline-functions to gcc before version 8

Attempt to workaround gcc bug.

Issue #37.
---
 CMakeLists.txt | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2d8ead6..c64786c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -275,6 +275,10 @@ if (CMAKE_CXX_COMPILER_ID STREQUAL "Intel")
   list (APPEND PBRT_CXX_FLAGS "-fp-model ${FP_MODEL}")
 endif ()
 
+if (CMAKE_COMPILER_IS_GNUCC AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 8.0)
+  list (APPEND PBRT_CXX_FLAGS -fkeep-inline-functions)
+endif ()
+
 if (MSVC AND MSVC_VERSION LESS 1920)
   message (SEND_ERROR "pbrt-v4 currently requires MSVC 2019 to build on Windows. PRs that get MSVC 2017 working as well would be welcomed. :-)")
 endif ()
-- 
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