14 lines
819 B
Diff
14 lines
819 B
Diff
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Index: eigen-3.3.8/cmake/FindGoogleHash.cmake
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===================================================================
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--- eigen-3.3.8.orig/cmake/FindGoogleHash.cmake
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+++ eigen-3.3.8/cmake/FindGoogleHash.cmake
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@@ -12,6 +12,8 @@ find_path(GOOGLEHASH_INCLUDES
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if(GOOGLEHASH_INCLUDES)
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# let's make sure it compiles with the current compiler
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+ # C++11 is needed for googlehash
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+ set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
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file(WRITE ${CMAKE_BINARY_DIR}/googlehash_test.cpp
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"#include <google/sparse_hash_map>\n#include <google/dense_hash_map>\nint main(int argc, char** argv) { google::dense_hash_map<int,float> a; google::sparse_hash_map<int,float> b; return 0;}\n")
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try_compile(GOOGLEHASH_COMPILE ${CMAKE_BINARY_DIR} ${CMAKE_BINARY_DIR}/googlehash_test.cpp OUTPUT_VARIABLE GOOGLEHASH_COMPILE_RESULT)
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