comparison configure @ 1011:dbb7f0ab011e cxx11

CXX11 (-std=c++11) branch, to test build environments before making any code adaptations
author Chris Cannam
date Mon, 17 Nov 2014 15:31:07 +0000
parents a8f3195b0761
children dfc1c7cd8297 cc27f35aa75c
comparison
equal deleted inserted replaced
1010:36f79bc5c3d7 1011:dbb7f0ab011e
671 PKG_CONFIG_PATH 671 PKG_CONFIG_PATH
672 PKG_CONFIG 672 PKG_CONFIG
673 EGREP 673 EGREP
674 GREP 674 GREP
675 CXXCPP 675 CXXCPP
676 HAVE_CXX11
676 MKDIR_P 677 MKDIR_P
677 INSTALL_DATA 678 INSTALL_DATA
678 INSTALL_SCRIPT 679 INSTALL_SCRIPT
679 INSTALL_PROGRAM 680 INSTALL_PROGRAM
680 ac_ct_CXX 681 ac_ct_CXX
3447 fi 3448 fi
3448 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $MKDIR_P" >&5 3449 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $MKDIR_P" >&5
3449 $as_echo "$MKDIR_P" >&6; } 3450 $as_echo "$MKDIR_P" >&6; }
3450 3451
3451 3452
3453 # We are daringly making use of C++11 now
3454
3455 ax_cxx_compile_cxx11_required=true
3456 ac_ext=cpp
3457 ac_cpp='$CXXCPP $CPPFLAGS'
3458 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
3459 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
3460 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
3461 ac_success=no
3462 { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CXX supports C++11 features by default" >&5
3463 $as_echo_n "checking whether $CXX supports C++11 features by default... " >&6; }
3464 if ${ax_cv_cxx_compile_cxx11+:} false; then :
3465 $as_echo_n "(cached) " >&6
3466 else
3467 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
3468 /* end confdefs.h. */
3469
3470 template <typename T>
3471 struct check
3472 {
3473 static_assert(sizeof(int) <= sizeof(T), "not big enough");
3474 };
3475
3476 struct Base {
3477 virtual void f() {}
3478 };
3479 struct Child : public Base {
3480 virtual void f() override {}
3481 };
3482
3483 typedef check<check<bool>> right_angle_brackets;
3484
3485 int a;
3486 decltype(a) b;
3487
3488 typedef check<int> check_type;
3489 check_type c;
3490 check_type&& cr = static_cast<check_type&&>(c);
3491
3492 auto d = a;
3493 auto l = [](){};
3494
3495 _ACEOF
3496 if ac_fn_cxx_try_compile "$LINENO"; then :
3497 ax_cv_cxx_compile_cxx11=yes
3498 else
3499 ax_cv_cxx_compile_cxx11=no
3500 fi
3501 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
3502 fi
3503 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_cxx_compile_cxx11" >&5
3504 $as_echo "$ax_cv_cxx_compile_cxx11" >&6; }
3505 if test x$ax_cv_cxx_compile_cxx11 = xyes; then
3506 ac_success=yes
3507 fi
3508
3509
3510
3511 if test x$ac_success = xno; then
3512 for switch in -std=c++11 -std=c++0x; do
3513 cachevar=`$as_echo "ax_cv_cxx_compile_cxx11_$switch" | $as_tr_sh`
3514 { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CXX supports C++11 features with $switch" >&5
3515 $as_echo_n "checking whether $CXX supports C++11 features with $switch... " >&6; }
3516 if eval \${$cachevar+:} false; then :
3517 $as_echo_n "(cached) " >&6
3518 else
3519 ac_save_CXXFLAGS="$CXXFLAGS"
3520 CXXFLAGS="$CXXFLAGS $switch"
3521 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
3522 /* end confdefs.h. */
3523
3524 template <typename T>
3525 struct check
3526 {
3527 static_assert(sizeof(int) <= sizeof(T), "not big enough");
3528 };
3529
3530 struct Base {
3531 virtual void f() {}
3532 };
3533 struct Child : public Base {
3534 virtual void f() override {}
3535 };
3536
3537 typedef check<check<bool>> right_angle_brackets;
3538
3539 int a;
3540 decltype(a) b;
3541
3542 typedef check<int> check_type;
3543 check_type c;
3544 check_type&& cr = static_cast<check_type&&>(c);
3545
3546 auto d = a;
3547 auto l = [](){};
3548
3549 _ACEOF
3550 if ac_fn_cxx_try_compile "$LINENO"; then :
3551 eval $cachevar=yes
3552 else
3553 eval $cachevar=no
3554 fi
3555 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
3556 CXXFLAGS="$ac_save_CXXFLAGS"
3557 fi
3558 eval ac_res=\$$cachevar
3559 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
3560 $as_echo "$ac_res" >&6; }
3561 if eval test x\$$cachevar = xyes; then
3562 CXXFLAGS="$CXXFLAGS $switch"
3563 ac_success=yes
3564 break
3565 fi
3566 done
3567 fi
3568 ac_ext=cpp
3569 ac_cpp='$CXXCPP $CPPFLAGS'
3570 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
3571 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
3572 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
3573
3574 if test x$ax_cxx_compile_cxx11_required = xtrue; then
3575 if test x$ac_success = xno; then
3576 as_fn_error $? "*** A compiler with support for C++11 language features is required." "$LINENO" 5
3577 fi
3578 else
3579 if test x$ac_success = xno; then
3580 HAVE_CXX11=0
3581 { $as_echo "$as_me:${as_lineno-$LINENO}: No compiler with C++11 support was found" >&5
3582 $as_echo "$as_me: No compiler with C++11 support was found" >&6;}
3583 else
3584 HAVE_CXX11=1
3585
3586 $as_echo "#define HAVE_CXX11 1" >>confdefs.h
3587
3588 fi
3589
3590
3591 fi
3592
3452 3593
3453 ac_ext=cpp 3594 ac_ext=cpp
3454 ac_cpp='$CXXCPP $CPPFLAGS' 3595 ac_cpp='$CXXCPP $CPPFLAGS'
3455 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5' 3596 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
3456 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' 3597 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
4200 CXXFLAGS_DEBUG="$AUTOCONF_CXXFLAGS" 4341 CXXFLAGS_DEBUG="$AUTOCONF_CXXFLAGS"
4201 CXXFLAGS_RELEASE="$AUTOCONF_CXXFLAGS" 4342 CXXFLAGS_RELEASE="$AUTOCONF_CXXFLAGS"
4202 CXXFLAGS_MINIMAL="$AUTOCONF_CXXFLAGS" 4343 CXXFLAGS_MINIMAL="$AUTOCONF_CXXFLAGS"
4203 4344
4204 if test "x$GCC" = "xyes"; then 4345 if test "x$GCC" = "xyes"; then
4205 CXXFLAGS_DEBUG="-Wall -Wextra -Werror -Woverloaded-virtual -Wformat-nonliteral -Wformat-security -Winit-self -Wswitch-enum -g -pipe" 4346 CXXFLAGS_DEBUG="-std=c++11 -Wall -Wextra -Werror -Woverloaded-virtual -Wformat-nonliteral -Wformat-security -Winit-self -Wswitch-enum -g -pipe"
4206 CXXFLAGS_RELEASE="-g0 -O2 -Wall -pipe" 4347 CXXFLAGS_RELEASE="-std=c++11 -g0 -O2 -Wall -pipe"
4207 CXXFLAGS_MINIMAL="-g0 -O0" 4348 CXXFLAGS_MINIMAL="-std=c++11 -g0 -O0"
4208 fi 4349 fi
4209 4350
4210 CXXFLAGS_BUILD="$CXXFLAGS_RELEASE" 4351 CXXFLAGS_BUILD="$CXXFLAGS_RELEASE"
4211 SV_DEFINES_BUILD="$SV_DEFINES_RELEASE" 4352 SV_DEFINES_BUILD="$SV_DEFINES_RELEASE"
4212 4353