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50 lines
1.5 KiB
CMake
50 lines
1.5 KiB
CMake
###############################################################
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#
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# Copyright 2011 Red Hat, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you
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# may not use this file except in compliance with the License. You may
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# obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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###############################################################
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MACRO (GLIBC_DETECT _VERSION)
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# there are multiple ways to detect glibc, but given nmi's
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# cons'd up paths I will trust only gcc. I guess I could also use
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# ldd --version to detect.
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set(_GLIB_SOURCE_DETECT "
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#include <limits.h>
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#include <stdio.h>
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int main()
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{
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printf(\"%d%d\",__GLIBC__, __GLIBC_MINOR__);
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return 0;
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}
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")
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file (WRITE ${CMAKE_CURRENT_BINARY_DIR}/build/cmake/glibc.cpp "${_GLIB_SOURCE_DETECT}\n")
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try_run(POST26_GLIBC_DETECTED
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POST26_GLIBC_COMPILE
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${CMAKE_CURRENT_BINARY_DIR}/build/cmake
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${CMAKE_CURRENT_BINARY_DIR}/build/cmake/glibc.cpp
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RUN_OUTPUT_VARIABLE GLIBC_VERSION )
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if (GLIBC_VERSION AND POST26_GLIBC_COMPILE )
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set(${_VERSION} ${GLIBC_VERSION})
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else()
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message(STATUS "NOTE: Could not detect GLIBC_VERSION from compiler")
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endif()
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ENDMACRO (GLIBC_DETECT)
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