From 0ee077b62873f6b6f8f2b29623903a72a5495712 Mon Sep 17 00:00:00 2001
From: Andre Sailer <andre.philippe.sailer@cern.ch>
Date: Wed, 21 Aug 2019 17:06:19 +0200
Subject: [PATCH] DD4hepConfig: filesystem, add link test for gcc9.1
---
cmake/DD4hepBuild.cmake | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/cmake/DD4hepBuild.cmake b/cmake/DD4hepBuild.cmake
index 03c83bef6..b8f0c5670 100644
--- a/cmake/DD4hepBuild.cmake
+++ b/cmake/DD4hepBuild.cmake
@@ -677,7 +677,8 @@ MACRO(DD4HEP_SETUP_BOOST_TARGETS)
# Try to compile with filesystem header linking against different FS libraries
SET(HAVE_FILESYSTEM False)
dd4hep_debug("|++> Checking if compiler supports filesystem library")
- FOREACH(FS_LIB_NAME stdc++fs c++fs )
+ # stdc++fs needed in gcc8, no lib for gcc9.1, c++fs for llvm
+ FOREACH(FS_LIB_NAME stdc++fs "" c++fs )
dd4hep_debug("|++++> linking against ${FS_LIB_NAME}")
try_compile(HAVE_FILESYSTEM ${CMAKE_BINARY_DIR}/try ${CMAKE_CURRENT_LIST_DIR}/cmake/TryFileSystem.cpp
CXX_STANDARD ${CMAKE_CXX_STANDARD}
@@ -687,7 +688,7 @@ MACRO(DD4HEP_SETUP_BOOST_TARGETS)
)
dd4hep_debug("|++++> ${HAVE_FS_OUTPUT}")
IF(HAVE_FILESYSTEM)
- dd4hep_print("|++> Compiler supports filesystem, linking against ${FS_LIB_NAME}")
+ dd4hep_print("|++> Compiler supports filesystem when linking against ${FS_LIB_NAME}")
SET(FS_LIBRARIES ${FS_LIB_NAME})
BREAK()
ENDIF()
--
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