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Fix configure misdetecting C++14 (#6488).

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Wilson Snyder 2025-09-26 08:24:34 -04:00
parent 21dbdbf69d
commit 62880c125e
2 changed files with 8 additions and 8 deletions
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@ -72,6 +72,7 @@ Verilator 5.041 devel
* Fix splitting hierarchically referenced variables (#6475). [Ryszard Rozak, Antmicro Ltd.] * Fix splitting hierarchically referenced variables (#6475). [Ryszard Rozak, Antmicro Ltd.]
* Fix Windows compilation of Verilator with spaces in the path (#6477). [Fabian Keßler-Schulz] * Fix Windows compilation of Verilator with spaces in the path (#6477). [Fabian Keßler-Schulz]
* Fix PROTOTYPEMIS error on implicit logic (#6482). [Alex Solomatnikov] * Fix PROTOTYPEMIS error on implicit logic (#6482). [Alex Solomatnikov]
* Fix configure misdetecting C++14 (#6488). [Thomas O'Keeffe]
Verilator 5.040 2025-08-30 Verilator 5.040 2025-08-30

15
configure.ac
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@ -590,18 +590,17 @@ AC_SUBST(CFG_LIBS)
AC_DEFUN([_MY_CXX_CHECK_CXX_VER], AC_DEFUN([_MY_CXX_CHECK_CXX_VER],
[# _MY_CXX_CHECK_CXX_VER(flag) -- Check if compiler runs C++14 [# _MY_CXX_CHECK_CXX_VER(flag) -- Check if compiler runs C++14
# Set $_my_result # Set $_my_result
AC_LINK_IFELSE( AC_RUN_IFELSE(
[AC_LANG_PROGRAM([#include <thread> [AC_LANG_PROGRAM([#include <thread>
#if (__cplusplus < 201402L) #if (__cplusplus < 201402L)
# error "Too old" # error "Too old"
#endif #endif
], [[ ]])], ], [[
[_my_result=yes std::thread t([]{});
if test -s conftest.err; then t.join();
if grep -e "$1" conftest.err >/dev/null; then ]])],
_my_result=no [_my_result=yes],
fi [_my_result=no],
fi],
[_my_result=no]) [_my_result=no])
]) ])