mirror of https://github.com/fltk/fltk
CMake: Fix detection of trunc() for Windows
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@ -167,12 +167,16 @@ mark_as_advanced(LIB_m)
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# functions
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include(CheckFunctionExists)
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# save CMAKE_REQUIRED_LIBRARIES (is this really necessary ?)
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# Save CMAKE_REQUIRED_LIBRARIES
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# Note: CMAKE_REQUIRED_LIBRARIES must be set for each search and
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# reset after the search to avoid to influence subsequent searches.
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# The original value is restored after all searches.
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if(DEFINED CMAKE_REQUIRED_LIBRARIES)
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set(SAVED_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES})
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else(DEFINED CMAKE_REQUIRED_LIBRARIES)
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else()
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unset(SAVED_REQUIRED_LIBRARIES)
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endif(DEFINED CMAKE_REQUIRED_LIBRARIES)
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endif()
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set(CMAKE_REQUIRED_LIBRARIES)
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if(HAVE_DLFCN_H)
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@ -208,11 +212,12 @@ check_function_exists(vsnprintf HAVE_VSNPRINTF)
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check_function_exists(setenv HAVE_SETENV)
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if(LIB_m)
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# Windows doesn't require '-lm' for trunc(), other platforms do
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if(LIB_m AND NOT WIN32)
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set(CMAKE_REQUIRED_LIBRARIES ${LIB_m})
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check_function_exists(trunc HAVE_TRUNC)
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set(CMAKE_REQUIRED_LIBRARIES)
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endif(LIB_m)
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endif()
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check_function_exists(trunc HAVE_TRUNC)
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set(CMAKE_REQUIRED_LIBRARIES)
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if(HAVE_SCANDIR AND NOT HAVE_SCANDIR_POSIX)
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set(MSG "POSIX compatible scandir")
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@ -231,19 +236,19 @@ if(HAVE_SCANDIR AND NOT HAVE_SCANDIR_POSIX)
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endif(HAVE_SCANDIR AND NOT HAVE_SCANDIR_POSIX)
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mark_as_advanced(HAVE_SCANDIR_POSIX)
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# restore CMAKE_REQUIRED_LIBRARIES (is this really necessary ?)
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# restore CMAKE_REQUIRED_LIBRARIES
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if(DEFINED SAVED_REQUIRED_LIBRARIES)
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set(CMAKE_REQUIRED_LIBRARIES ${SAVED_REQUIRED_LIBRARIES})
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unset(SAVED_REQUIRED_LIBRARIES)
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else(DEFINED SAVED_REQUIRED_LIBRARIES)
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else()
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unset(CMAKE_REQUIRED_LIBRARIES)
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endif(DEFINED SAVED_REQUIRED_LIBRARIES)
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endif()
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#######################################################################
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# packages
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# Doxygen: necessary for HTML and PDF docs
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find_package (Doxygen)
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find_package(Doxygen)
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# LaTex: necessary for PDF docs (note: FindLATEX doesn't return LATEX_FOUND)
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@ -252,7 +257,7 @@ find_package (Doxygen)
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set(LATEX_FOUND)
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if(DOXYGEN_FOUND)
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find_package (LATEX)
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find_package(LATEX)
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if(LATEX_COMPILER AND NOT LATEX_FOUND)
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set(LATEX_FOUND YES)
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endif(LATEX_COMPILER AND NOT LATEX_FOUND)
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