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cmake: set warning and error options

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The set is far from perfect, but guards against common errors with GCC.
This commit is contained in:
Eugene Shalygin 2017-04-27 14:35:28 +02:00
commit c4e16aa820
9 changed files with 147 additions and 7 deletions
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49
cmake/Modules/MacroGlibcDetect.cmake Normal file
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###############################################################
#
# Copyright 2011 Red Hat, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you
# may not use this file except in compliance with the License. You may
# obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
###############################################################
MACRO (GLIBC_DETECT _VERSION)
# there are multiple ways to detect glibc, but given nmi's
# cons'd up paths I will trust only gcc. I guess I could also use
# ldd --version to detect.
set(_GLIB_SOURCE_DETECT "
#include <limits.h>
#include <stdio.h>
int main()
{
printf(\"%d%d\",__GLIBC__, __GLIBC_MINOR__);
return 0;
}
")
file (WRITE ${CMAKE_CURRENT_BINARY_DIR}/build/cmake/glibc.cpp "${_GLIB_SOURCE_DETECT}\n")
try_run(POST26_GLIBC_DETECTED
POST26_GLIBC_COMPILE
${CMAKE_CURRENT_BINARY_DIR}/build/cmake
${CMAKE_CURRENT_BINARY_DIR}/build/cmake/glibc.cpp
RUN_OUTPUT_VARIABLE GLIBC_VERSION )
if (GLIBC_VERSION AND POST26_GLIBC_COMPILE )
set(${_VERSION} ${GLIBC_VERSION})
else()
message(STATUS "NOTE: Could not detect GLIBC_VERSION from compiler")
endif()
ENDMACRO (GLIBC_DETECT)