From 05c10d0def2ac8caa8263f695c59da7113d3e38c Mon Sep 17 00:00:00 2001 From: Alex Langford Date: Thu, 7 Jun 2018 19:53:25 +0000 Subject: [PATCH] Check for process_vm_readv using CheckSymbolExists Instead of checking if code compiles, I think it is a better to check if the symbol exists. This is simpler and should do the same thing. Differential Revision: https://reviews.llvm.org/D47897 llvm-svn: 334219 --- lldb/cmake/modules/LLDBGenerateConfig.cmake | 10 ++-------- 1 file changed, 2 insertions(+), 8 deletions(-) diff --git a/lldb/cmake/modules/LLDBGenerateConfig.cmake b/lldb/cmake/modules/LLDBGenerateConfig.cmake index ca2d5842a806..33b7e98318e0 100644 --- a/lldb/cmake/modules/LLDBGenerateConfig.cmake +++ b/lldb/cmake/modules/LLDBGenerateConfig.cmake @@ -14,14 +14,8 @@ check_cxx_symbol_exists(accept4 "sys/socket.h" HAVE_ACCEPT4) check_include_file(termios.h HAVE_TERMIOS_H) check_include_files("sys/types.h;sys/event.h" HAVE_SYS_EVENT_H) -check_cxx_source_compiles(" - #include - int main() { process_vm_readv(0, nullptr, 0, nullptr, 0, 0); return 0; }" - HAVE_PROCESS_VM_READV) -check_cxx_source_compiles(" - #include - int main() { return __NR_process_vm_readv; }" - HAVE_NR_PROCESS_VM_READV) +check_cxx_symbol_exists(process_vm_readv "sys/uio.h" HAVE_PROCESS_VM_READV) +check_cxx_symbol_exists(__NR_process_vm_readv "sys/syscall.h" HAVE_NR_PROCESS_VM_READV) check_library_exists(compression compression_encode_buffer "" HAVE_LIBCOMPRESSION)