The -Wno-stringop-truncation flag is only supported by some GCC versions
and not by Clang (macOS, FreeBSD) at all.
Change-Id: I452bc4ee935d13f8e9095d0a31805a3bbaff0cec
Signed-off-by: Arne Schwabe <a...@rfc2549.org>
---
CMakeLists.txt | 20 ++++++++++++--------
1 file changed, 12 insertions(+), 8 deletions(-)
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3cbba5a38..ec0915bb0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -12,6 +12,14 @@ project(openvpn)
# and OpenSSL having version 1.1.1+ and generally does not offer the same
# configurability like autoconf
+find_package(PkgConfig REQUIRED)
+include(CheckSymbolExists)
+include(CheckIncludeFiles)
+include(CheckCCompilerFlag)
+include(CheckTypeSize)
+include(CheckStructHasMember)
+include(CTest)
+
option(UNSUPPORTED_BUILDS "Allow unsupported builds" OFF)
if (NOT WIN32 AND NOT ${UNSUPPORTED_BUILDS})
@@ -70,7 +78,10 @@ else ()
set(CMAKE_CXX_FLAGS_RELEASE "-O2")
set(CMAKE_C_FLAGS_DEBUG "-g -O1")
set(CMAKE_CXX_FLAGS_DEBUG "-g -O1")
- add_compile_options(-Wall -Wuninitialized -Wno-stringop-truncation)
+ check_c_compiler_flag(-Wno-stringop-truncation NoStringOpTruncation)
+ if (${NoStringOpTruncation})
+ add_compile_options(-Wall -Wuninitialized )
+ endif()
# We are not ready for this
#add_compile_options(-Wconversion -Wno-sign-conversion -Wsign-compare)
if (USE_WERROR)
@@ -78,13 +89,6 @@ else ()
endif ()
endif ()
-find_package(PkgConfig REQUIRED)
-include(CheckSymbolExists)
-include(CheckIncludeFiles)
-include(CheckTypeSize)
-include(CheckStructHasMember)
-include(CTest)
-
find_program(PYTHON NAMES python3 python)
execute_process(
COMMAND ${PYTHON}
${CMAKE_CURRENT_SOURCE_DIR}/contrib/cmake/parse-version.m4.py
${CMAKE_CURRENT_SOURCE_DIR}/version.m4
--
2.39.2 (Apple Git-143)
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