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authorJohn Szakmeister <john@szakmeister.net>2014-12-18 04:14:14 -0500
committerJohn Szakmeister <john@szakmeister.net>2014-12-18 04:14:14 -0500
commit379dcd7d7faf4c9b38042eca424d4ee72a768fa6 (patch)
tree6e256595663fc19b78d4bd18c902ccce8f13d7aa
parent9ebc960cb9f7c74c244e095a84aab7f397e4d4ae (diff)
parent0a5dad8a10da7988f2c21fa26bb61aa6ce53205d (diff)
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Merge pull request #1686 from jszakmeister/include-opts-in-fortify-check
build: include the flags for the build type in the _FORTIFY_SOURCE check
-rw-r--r--CMakeLists.txt11
1 files changed, 11 insertions, 0 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9f41f03241..ec49bee339 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -74,6 +74,17 @@ set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wconversion")
# does not work with Neovim due to some uses of dynamically-sized structures.
# See https://github.com/neovim/neovim/issues/223 for details.
include(CheckCSourceCompiles)
+
+# Include the build type's default flags in the check for _FORTIFY_SOURCE,
+# otherwise we may incorrectly identify the level as acceptable and find out
+# later that it was not when optimizations were enabled. CFLAGS is applied
+# even though you don't see it in CMAKE_REQUIRED_FLAGS.
+set(INIT_FLAGS_NAME CMAKE_C_FLAGS_${CMAKE_BUILD_TYPE})
+string(TOUPPER ${INIT_FLAGS_NAME} INIT_FLAGS_NAME)
+if(${INIT_FLAGS_NAME})
+ set(CMAKE_REQUIRED_FLAGS "${${INIT_FLAGS_NAME}}")
+endif()
+
check_c_source_compiles("
#if defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 1
#error \"_FORTIFY_SOURCE > 1\"