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Add configure option for c++17

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This commit is contained in:
Pieter Wuille 2020-04-11 00:30:43 -07:00
parent 0fbde488b2
commit 7829685e27
1 changed files with 14 additions and 2 deletions
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16
configure.ac
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@ -61,8 +61,20 @@ case $host in
lt_cv_deplibs_check_method="pass_all"
;;
esac
dnl Require C++11 compiler (no GNU extensions)
AX_CXX_COMPILE_STDCXX([11], [noext], [mandatory])
AC_ARG_ENABLE([c++17],
[AS_HELP_STRING([--enable-c++17],
[enable compilation in c++17 mode (disabled by default)])],
[use_cxx17=$enableval],
[use_cxx17=no])
dnl Require C++11 or C++17 compiler (no GNU extensions)
if test "x$use_cxx17" = xyes; then
AX_CXX_COMPILE_STDCXX([17], [noext], [mandatory])
else
AX_CXX_COMPILE_STDCXX([11], [noext], [mandatory])
fi
dnl Check if -latomic is required for <std::atomic>
CHECK_ATOMIC