Revision: 70269
http://sourceforge.net/p/brlcad/code/70269
Author: brlcad
Date: 2017-09-13 12:34:54 +0000 (Wed, 13 Sep 2017)
Log Message:
-----------
need a better way to conditionally toggle compile-time flags, but stash these
for now
Modified Paths:
--------------
brlcad/trunk/misc/CMake/BRLCAD_CompilerFlags.cmake
Modified: brlcad/trunk/misc/CMake/BRLCAD_CompilerFlags.cmake
===================================================================
--- brlcad/trunk/misc/CMake/BRLCAD_CompilerFlags.cmake 2017-09-13 06:54:10 UTC
(rev 70268)
+++ brlcad/trunk/misc/CMake/BRLCAD_CompilerFlags.cmake 2017-09-13 12:34:54 UTC
(rev 70269)
@@ -34,7 +34,7 @@
#
###
-# -fast provokes a stack corruption in the shadow computations because
+# -ffast-math provokes a stack corruption in the shadow computations because
# of strict aliasing getting enabled. we _require_
# -fno-strict-aliasing until someone changes how lists are managed.
# -fast-math results in non-IEEE floating point math among a handful
@@ -41,15 +41,27 @@
# of other optimizations that cause substantial error in ray tracing
# and tessellation (and probably more).
CHECK_C_FLAG(O3 GROUPS OPTIMIZE_C_FLAGS)
+# CHECK_C_FLAG(Ofast GROUPS OPTIMIZE_C_FLAGS)
+# CHECK_C_FLAG(march=native GROUPS OPTIMIZE_C_FLAGS)
CHECK_C_FLAG(fstrength-reduce GROUPS OPTIMIZE_C_FLAGS)
CHECK_C_FLAG(fexpensive-optimizations GROUPS OPTIMIZE_C_FLAGS)
CHECK_C_FLAG(finline-functions GROUPS OPTIMIZE_C_FLAGS)
CHECK_C_FLAG("finline-limit=10000 --param inline-unit-growth=300 --param
large-function-growth=300" GROUPS OPTIMIZE_C_FLAGS)
CHECK_CXX_FLAG(O3 GROUPS OPTIMIZE_CXX_FLAGS)
+# CHECK_CXX_FLAG(Ofast GROUPS OPTIMIZE_CXX_FLAGS)
+# CHECK_CXX_FLAG(march=native GROUPS OPTIMIZE_CXX_FLAGS)
CHECK_CXX_FLAG(fstrength-reduce GROUPS OPTIMIZE_CXX_FLAGS)
CHECK_CXX_FLAG(fexpensive-optimizations GROUPS OPTIMIZE_CXX_FLAGS)
CHECK_CXX_FLAG(finline-functions GROUPS OPTIMIZE_CXX_FLAGS)
CHECK_CXX_FLAG("finline-limit=10000 --param inline-unit-growth=300 --param
large-function-growth=300" GROUPS OPTIMIZE_CXX_FLAGS)
+
+# FIXME: need to conditionally set gcc-ar/gcc-ranlib if we using -flto
+#######
+# CHECK_C_FLAG(flto GROUPS OPTIMIZE_C_FLAGS)
+# CHECK_CXX_FLAG(flto GROUPS OPTIMIZE_CXX_FLAGS)
+# SET(CMAKE_AR "gcc-ar" CACHE FILEPATH "Archiver" FORCE)
+# SET(CMAKE_RANLIB "gcc-ranlib" CACHE FILEPATH "Ranlib" FORCE)
+
if(${BRLCAD_OPTIMIZED_BUILD} MATCHES "ON")
if(NOT BRLCAD_ENABLE_PROFILING AND NOT BRLCAD_FLAGS_DEBUG)
CHECK_C_FLAG(fomit-frame-pointer GROUPS OPTIMIZE_C_FLAGS)
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