From: Matthias Maier <tamiko@43-1.org>
Date: Fri, 10 Jun 2022 00:05:32 +0000 (-0500)
Subject: CMake: use -Wno-misleading-indentation for grid_generator.cc compilation unit
X-Git-Tag: v9.4.0-rc1~42^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1cb81c9e627c1eb97c0b35e12e7ae95abc0ea595;p=dealii.git

CMake: use -Wno-misleading-indentation for grid_generator.cc compilation unit
---

diff --git a/source/grid/CMakeLists.txt b/source/grid/CMakeLists.txt
index d8d27d5a87..88a236d06e 100644
--- a/source/grid/CMakeLists.txt
+++ b/source/grid/CMakeLists.txt
@@ -15,6 +15,23 @@
 
 INCLUDE_DIRECTORIES(BEFORE ${CMAKE_CURRENT_BINARY_DIR})
 
+#
+# Work around an issue where gcc emits a note that the warning
+# -Wmisleading-indentation will be disabled due to a humongous line of over
+# 100k characters produced by one of the CGAL headers. Unfortunately,
+# guarding the include by DEAL_II_DISABLE_EXTRA_DIAGNOSTICS is not enough
+# due to a longstanding bug in gcc. Thus, simply wet
+# -Wno-misleading-indentation on the command line for the grid_generator.cc
+# compilation unit.
+#
+IF(DEAL_II_WITH_CGAL)
+  ENABLE_IF_SUPPORTED(_flag "-Wno-misleading-indentation")
+  SET_PROPERTY(SOURCE "grid_generator.cc"
+    APPEND_STRING PROPERTY COMPILE_FLAGS " ${_flag}"
+    )
+ENDIF()
+
+
 SET(_unity_include_src
   cell_id.cc
   grid_refinement.cc