diff options
| -rw-r--r-- | autoconf/configure.ac | 152 | ||||
| -rwxr-xr-x | configure | 520 |
2 files changed, 337 insertions, 335 deletions
diff --git a/autoconf/configure.ac b/autoconf/configure.ac index 7e399fcddd..243b2ceec9 100644 --- a/autoconf/configure.ac +++ b/autoconf/configure.ac @@ -115,81 +115,6 @@ AC_COMPILE_IFELSE([AC_LANG_SOURCE([[#if ! __clang__ AC_LANG_POP([C++]) AC_MSG_RESULT([${llvm_cv_cxx_compiler}]) -dnl Check both GCC and Clang for sufficiently modern versions. These checks can -dnl be bypassed by passing a flag if necessary on a platform. -AC_ARG_ENABLE(compiler-version-checks, - AS_HELP_STRING([--enable-compiler-version-checks], - [Check the version of the host compiler (default is YES)]),, - enableval=default) -case "$enableval" in - no) - ;; - yes|default) - AC_LANG_PUSH([C++]) - case "$llvm_cv_cxx_compiler" in - clang) - AC_MSG_CHECKING([whether Clang is new enough]) - AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ -#if __clang_major__ < 3 || (__clang_major__ == 3 && __clang_minor__ < 1) -#error This version of Clang is too old to build LLVM -#endif -]])], - [AC_MSG_RESULT([yes])], - [AC_MSG_RESULT([no]) - AC_MSG_ERROR([ -The selected Clang compiler is not new enough to build LLVM. Please upgrade to -Clang 3.1. You may pass --disable-compiler-version-checks to configure to -bypass these sanity checks.])]) - - dnl Note that libstdc++4.6 is known broken for C++11 builds. The errors - dnl are sometimes deeply confusing though. Here we test for an obvious - dnl incomplete feature in 4.6's standard library that was completed in - dnl 4.7's. - AC_MSG_CHECKING([whether Clang will select a modern C++ standard library]) - llvm_cv_old_cxxflags="$CXXFLAGS" - CXXFLAGS="$CXXFLAGS -std=c++0x" - AC_LINK_IFELSE([AC_LANG_SOURCE([[ -#include <atomic> -std::atomic<float> x(0.0f); -int main() { return (float)x; } -]])], - [AC_MSG_RESULT([yes])], - [AC_MSG_RESULT([no]) - AC_MSG_ERROR([ -We detected a missing feature in the standard C++ library that was known to be -missing in libstdc++4.6 and implemented in libstdc++4.7. There are numerous -C++11 problems with 4.6's library, and we don't support GCCs or libstdc++ older -than 4.7. You will need to update your system and ensure Clang uses the newer -standard library. - -If this error is incorrect or you need to force things to work, you may pass -'--disable-compiler-version-checks' to configure to bypass this test.])]) - CXXFLAGS="$llvm_cv_old_cxxflags" - ;; - gcc) - AC_MSG_CHECKING([whether GCC is new enough]) - AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ -#if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 7) -#error This version of GCC is too old to build LLVM -#endif -]])], - [AC_MSG_RESULT([yes])], - [AC_MSG_RESULT([no]) - AC_MSG_ERROR([ -The selected GCC C++ compiler is not new enough to build LLVM. Please upgrade -to GCC 4.7. You may pass --disable-compiler-version-checks to configure to -bypass these sanity checks.])]) - ;; - unknown) - ;; - esac - AC_LANG_POP([C++]) - ;; - *) - AC_MSG_ERROR([Invalid setting for --enable-compiler-version-checks. Use "yes" or "no"]) - ;; -esac - dnl Configure all of the projects present in our source tree. While we could dnl just AC_CONFIG_SUBDIRS on the set of directories in projects that have a dnl configure script, that usage of the AC_CONFIG_SUBDIRS macro is deprecated. @@ -582,6 +507,83 @@ case "$enableval" in *) AC_MSG_ERROR([Invalid setting for --enable-libcpp. Use "yes" or "no"]) ;; esac +dnl Check both GCC and Clang for sufficiently modern versions. These checks can +dnl be bypassed by passing a flag if necessary on a platform. We have to do +dnl these checks here so that we have the configuration of the standard C++ +dnl library finished. +AC_ARG_ENABLE(compiler-version-checks, + AS_HELP_STRING([--enable-compiler-version-checks], + [Check the version of the host compiler (default is YES)]),, + enableval=default) +case "$enableval" in + no) + ;; + yes|default) + AC_LANG_PUSH([C++]) + case "$llvm_cv_cxx_compiler" in + clang) + AC_MSG_CHECKING([whether Clang is new enough]) + AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ +#if __clang_major__ < 3 || (__clang_major__ == 3 && __clang_minor__ < 1) +#error This version of Clang is too old to build LLVM +#endif +]])], + [AC_MSG_RESULT([yes])], + [AC_MSG_RESULT([no]) + AC_MSG_ERROR([ +The selected Clang compiler is not new enough to build LLVM. Please upgrade to +Clang 3.1. You may pass --disable-compiler-version-checks to configure to +bypass these sanity checks.])]) + + dnl Note that libstdc++4.6 is known broken for C++11 builds. The errors + dnl are sometimes deeply confusing though. Here we test for an obvious + dnl incomplete feature in 4.6's standard library that was completed in + dnl 4.7's. + AC_MSG_CHECKING([whether Clang will select a modern C++ standard library]) + llvm_cv_old_cxxflags="$CXXFLAGS" + CXXFLAGS="$CXXFLAGS -std=c++0x" + AC_LINK_IFELSE([AC_LANG_SOURCE([[ +#include <atomic> +std::atomic<float> x(0.0f); +int main() { return (float)x; } +]])], + [AC_MSG_RESULT([yes])], + [AC_MSG_RESULT([no]) + AC_MSG_ERROR([ +We detected a missing feature in the standard C++ library that was known to be +missing in libstdc++4.6 and implemented in libstdc++4.7. There are numerous +C++11 problems with 4.6's library, and we don't support GCCs or libstdc++ older +than 4.7. You will need to update your system and ensure Clang uses the newer +standard library. + +If this error is incorrect or you need to force things to work, you may pass +'--disable-compiler-version-checks' to configure to bypass this test.])]) + CXXFLAGS="$llvm_cv_old_cxxflags" + ;; + gcc) + AC_MSG_CHECKING([whether GCC is new enough]) + AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ +#if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 7) +#error This version of GCC is too old to build LLVM +#endif +]])], + [AC_MSG_RESULT([yes])], + [AC_MSG_RESULT([no]) + AC_MSG_ERROR([ +The selected GCC C++ compiler is not new enough to build LLVM. Please upgrade +to GCC 4.7. You may pass --disable-compiler-version-checks to configure to +bypass these sanity checks.])]) + ;; + unknown) + ;; + esac + AC_LANG_POP([C++]) + ;; + *) + AC_MSG_ERROR([Invalid setting for --enable-compiler-version-checks. Use "yes" or "no"]) + ;; +esac + dnl --enable-cxx11 : check whether or not to use -std=c++11 on the command line AC_ARG_ENABLE(cxx11, AS_HELP_STRING([--enable-cxx11], @@ -1395,11 +1395,11 @@ if test -n "$ac_init_help"; then Optional Features: --disable-FEATURE do not include FEATURE (same as --enable-FEATURE=no) --enable-FEATURE[=ARG] include FEATURE [ARG=yes] + --enable-polly Use polly if available (default is YES) + --enable-libcpp Use libc++ if available (default is NO) --enable-compiler-version-checks Check the version of the host compiler (default is YES) - --enable-polly Use polly if available (default is YES) - --enable-libcpp Use libc++ if available (default is NO) --enable-cxx11 Use c++11 if available (default is NO) --enable-split-dwarf Use split-dwarf if available (default is NO) --enable-clang-arcmt Enable building of clang ARCMT (default is YES) @@ -3702,264 +3702,6 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu { echo "$as_me:$LINENO: result: ${llvm_cv_cxx_compiler}" >&5 echo "${ECHO_T}${llvm_cv_cxx_compiler}" >&6; } -# Check whether --enable-compiler-version-checks was given. -if test "${enable_compiler_version_checks+set}" = set; then - enableval=$enable_compiler_version_checks; -else - enableval=default -fi - -case "$enableval" in - no) - ;; - yes|default) - ac_ext=cpp -ac_cpp='$CXXCPP $CPPFLAGS' -ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5' -ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' -ac_compiler_gnu=$ac_cv_cxx_compiler_gnu - - case "$llvm_cv_cxx_compiler" in - clang) - { echo "$as_me:$LINENO: checking whether Clang is new enough" >&5 -echo $ECHO_N "checking whether Clang is new enough... $ECHO_C" >&6; } - cat >conftest.$ac_ext <<_ACEOF -/* confdefs.h. */ -_ACEOF -cat confdefs.h >>conftest.$ac_ext -cat >>conftest.$ac_ext <<_ACEOF -/* end confdefs.h. */ - -#if __clang_major__ < 3 || (__clang_major__ == 3 && __clang_minor__ < 1) -#error This version of Clang is too old to build LLVM -#endif - -_ACEOF -rm -f conftest.$ac_objext -if { (ac_try="$ac_compile" -case "(($ac_try" in - *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; - *) ac_try_echo=$ac_try;; -esac -eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5 - (eval "$ac_compile") 2>conftest.er1 - ac_status=$? - grep -v '^ *+' conftest.er1 >conftest.err - rm -f conftest.er1 - cat conftest.err >&5 - echo "$as_me:$LINENO: \$? = $ac_status" >&5 - (exit $ac_status); } && - { ac_try='test -z "$ac_cxx_werror_flag" || test ! -s conftest.err' - { (case "(($ac_try" in - *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; - *) ac_try_echo=$ac_try;; -esac -eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5 - (eval "$ac_try") 2>&5 - ac_status=$? - echo "$as_me:$LINENO: \$? = $ac_status" >&5 - (exit $ac_status); }; } && - { ac_try='test -s conftest.$ac_objext' - { (case "(($ac_try" in - *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; - *) ac_try_echo=$ac_try;; -esac -eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5 - (eval "$ac_try") 2>&5 - ac_status=$? - echo "$as_me:$LINENO: \$? = $ac_status" >&5 - (exit $ac_status); }; }; then - { echo "$as_me:$LINENO: result: yes" >&5 -echo "${ECHO_T}yes" >&6; } -else - echo "$as_me: failed program was:" >&5 -sed 's/^/| /' conftest.$ac_ext >&5 - - { echo "$as_me:$LINENO: result: no" >&5 -echo "${ECHO_T}no" >&6; } - { { echo "$as_me:$LINENO: error: -The selected Clang compiler is not new enough to build LLVM. Please upgrade to -Clang 3.1. You may pass --disable-compiler-version-checks to configure to -bypass these sanity checks." >&5 -echo "$as_me: error: -The selected Clang compiler is not new enough to build LLVM. Please upgrade to -Clang 3.1. You may pass --disable-compiler-version-checks to configure to -bypass these sanity checks." >&2;} - { (exit 1); exit 1; }; } -fi - -rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext - - { echo "$as_me:$LINENO: checking whether Clang will select a modern C++ standard library" >&5 -echo $ECHO_N "checking whether Clang will select a modern C++ standard library... $ECHO_C" >&6; } - llvm_cv_old_cxxflags="$CXXFLAGS" - CXXFLAGS="$CXXFLAGS -std=c++0x" - cat >conftest.$ac_ext <<_ACEOF -/* confdefs.h. */ -_ACEOF -cat confdefs.h >>conftest.$ac_ext -cat >>conftest.$ac_ext <<_ACEOF -/* end confdefs.h. */ - -#include <atomic> -std::atomic<float> x(0.0f); -int main() { return (float)x; } - -_ACEOF -rm -f conftest.$ac_objext conftest$ac_exeext -if { (ac_try="$ac_link" -case "(($ac_try" in - *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; - *) ac_try_echo=$ac_try;; -esac -eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5 - (eval "$ac_link") 2>conftest.er1 - ac_status=$? - grep -v '^ *+' conftest.er1 >conftest.err - rm -f conftest.er1 - cat conftest.err >&5 - echo "$as_me:$LINENO: \$? = $ac_status" >&5 - (exit $ac_status); } && - { ac_try='test -z "$ac_cxx_werror_flag" || test ! -s conftest.err' - { (case "(($ac_try" in - *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; - *) ac_try_echo=$ac_try;; -esac -eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5 - (eval "$ac_try") 2>&5 - ac_status=$? - echo "$as_me:$LINENO: \$? = $ac_status" >&5 - (exit $ac_status); }; } && - { ac_try='test -s conftest$ac_exeext' - { (case "(($ac_try" in - *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; - *) ac_try_echo=$ac_try;; -esac -eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5 - (eval "$ac_try") 2>&5 - ac_status=$? - echo "$as_me:$LINENO: \$? = $ac_status" >&5 - (exit $ac_status); }; }; then - { echo "$as_me:$LINENO: result: yes" >&5 -echo "${ECHO_T}yes" >&6; } -else - echo "$as_me: failed program was:" >&5 -sed 's/^/| /' conftest.$ac_ext >&5 - - { echo "$as_me:$LINENO: result: no" >&5 -echo "${ECHO_T}no" >&6; } - { { echo "$as_me:$LINENO: error: -We detected a missing feature in the standard C++ library that was known to be -missing in libstdc++4.6 and implemented in libstdc++4.7. There are numerous -C++11 problems with 4.6's library, and we don't support GCCs or libstdc++ older -than 4.7. You will need to update your system and ensure Clang uses the newer -standard library. - -If this error is incorrect or you need to force things to work, you may pass -'--disable-compiler-version-checks' to configure to bypass this test." >&5 -echo "$as_me: error: -We detected a missing feature in the standard C++ library that was known to be -missing in libstdc++4.6 and implemented in libstdc++4.7. There are numerous -C++11 problems with 4.6's library, and we don't support GCCs or libstdc++ older -than 4.7. You will need to update your system and ensure Clang uses the newer -standard library. - -If this error is incorrect or you need to force things to work, you may pass -'--disable-compiler-version-checks' to configure to bypass this test." >&2;} - { (exit 1); exit 1; }; } -fi - -rm -f core conftest.err conftest.$ac_objext \ - conftest$ac_exeext conftest.$ac_ext - CXXFLAGS="$llvm_cv_old_cxxflags" - ;; - gcc) - { echo "$as_me:$LINENO: checking whether GCC is new enough" >&5 -echo $ECHO_N "checking whether GCC is new enough... $ECHO_C" >&6; } - cat >conftest.$ac_ext <<_ACEOF -/* confdefs.h. */ -_ACEOF -cat confdefs.h >>conftest.$ac_ext -cat >>conftest.$ac_ext <<_ACEOF -/* end confdefs.h. */ - -#if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 7) -#error This version of GCC is too old to build LLVM -#endif - -_ACEOF -rm -f conftest.$ac_objext -if { (ac_try="$ac_compile" -case "(($ac_try" in - *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; - *) ac_try_echo=$ac_try;; -esac -eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5 - (eval "$ac_compile") 2>conftest.er1 - ac_status=$? - grep -v '^ *+' conftest.er1 >conftest.err - rm -f conftest.er1 - cat conftest.err >&5 - echo "$as_me:$LINENO: \$? = $ac_status" >&5 - (exit $ac_status); } && - { ac_try='test -z "$ac_cxx_werror_flag" || test ! -s conftest.err' - { (case "(($ac_try" in - *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; - *) ac_try_echo=$ac_try;; -esac -eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5 - (eval "$ac_try") 2>&5 - ac_status=$? - echo "$as_me:$LINENO: \$? = $ac_status" >&5 - (exit $ac_status); }; } && - { ac_try='test -s conftest.$ac_objext' - { (case "(($ac_try" in - *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; - *) ac_try_echo=$ac_try;; -esac -eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5 - (eval "$ac_try") 2>&5 - ac_status=$? - echo "$as_me:$LINENO: \$? = $ac_status" >&5 - (exit $ac_status); }; }; then - { echo "$as_me:$LINENO: result: yes" >&5 -echo "${ECHO_T}yes" >&6; } -else - echo "$as_me: failed program was:" >&5 -sed 's/^/| /' conftest.$ac_ext >&5 - - { echo "$as_me:$LINENO: result: no" >&5 -echo "${ECHO_T}no" >&6; } - { { echo "$as_me:$LINENO: error: -The selected GCC C++ compiler is not new enough to build LLVM. Please upgrade -to GCC 4.7. You may pass --disable-compiler-version-checks to configure to -bypass these sanity checks." >&5 -echo "$as_me: error: -The selected GCC C++ compiler is not new enough to build LLVM. Please upgrade -to GCC 4.7. You may pass --disable-compiler-version-checks to configure to -bypass these sanity checks." >&2;} - { (exit 1); exit 1; }; } -fi - -rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext - ;; - unknown) - ;; - esac - ac_ext=c -ac_cpp='$CPP $CPPFLAGS' -ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5' -ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' -ac_compiler_gnu=$ac_cv_c_compiler_gnu - - ;; - *) - { { echo "$as_me:$LINENO: error: Invalid setting for --enable-compiler-version-checks. Use \"yes\" or \"no\"" >&5 -echo "$as_me: error: Invalid setting for --enable-compiler-version-checks. Use \"yes\" or \"no\"" >&2;} - { (exit 1); exit 1; }; } - ;; -esac - if test -d ${srcdir}/projects/test-suite ; then @@ -4790,6 +4532,264 @@ echo "$as_me: error: Invalid setting for --enable-libcpp. Use \"yes\" or \"no\"" { (exit 1); exit 1; }; } ;; esac +# Check whether --enable-compiler-version-checks was given. +if test "${enable_compiler_version_checks+set}" = set; then + enableval=$enable_compiler_version_checks; +else + enableval=default +fi + +case "$enableval" in + no) + ;; + yes|default) + ac_ext=cpp +ac_cpp='$CXXCPP $CPPFLAGS' +ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5' +ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' +ac_compiler_gnu=$ac_cv_cxx_compiler_gnu + + case "$llvm_cv_cxx_compiler" in + clang) + { echo "$as_me:$LINENO: checking whether Clang is new enough" >&5 +echo $ECHO_N "checking whether Clang is new enough... $ECHO_C" >&6; } + cat >conftest.$ac_ext <<_ACEOF +/* confdefs.h. */ +_ACEOF +cat confdefs.h >>conftest.$ac_ext +cat >>conftest.$ac_ext <<_ACEOF +/* end confdefs.h. */ + +#if __clang_major__ < 3 || (__clang_major__ == 3 && __clang_minor__ < 1) +#error This version of Clang is too old to build LLVM +#endif + +_ACEOF +rm -f conftest.$ac_objext +if { (ac_try="$ac_compile" +case "(($ac_try" in + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; + *) ac_try_echo=$ac_try;; +esac +eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5 + (eval "$ac_compile") 2>conftest.er1 + ac_status=$? + grep -v '^ *+' conftest.er1 >conftest.err + rm -f conftest.er1 + cat conftest.err >&5 + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); } && + { ac_try='test -z "$ac_cxx_werror_flag" || test ! -s conftest.err' + { (case "(($ac_try" in + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; + *) ac_try_echo=$ac_try;; +esac +eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5 + (eval "$ac_try") 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); }; } && + { ac_try='test -s conftest.$ac_objext' + { (case "(($ac_try" in + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; + *) ac_try_echo=$ac_try;; +esac +eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5 + (eval "$ac_try") 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); }; }; then + { echo "$as_me:$LINENO: result: yes" >&5 +echo "${ECHO_T}yes" >&6; } +else + echo "$as_me: failed program was:" >&5 +sed 's/^/| /' conftest.$ac_ext >&5 + + { echo "$as_me:$LINENO: result: no" >&5 +echo "${ECHO_T}no" >&6; } + { { echo "$as_me:$LINENO: error: +The selected Clang compiler is not new enough to build LLVM. Please upgrade to +Clang 3.1. You may pass --disable-compiler-version-checks to configure to +bypass these sanity checks." >&5 +echo "$as_me: error: +The selected Clang compiler is not new enough to build LLVM. Please upgrade to +Clang 3.1. You may pass --disable-compiler-version-checks to configure to +bypass these sanity checks." >&2;} + { (exit 1); exit 1; }; } +fi + +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext + + { echo "$as_me:$LINENO: checking whether Clang will select a modern C++ standard library" >&5 +echo $ECHO_N "checking whether Clang will select a modern C++ standard library... $ECHO_C" >&6; } + llvm_cv_old_cxxflags="$CXXFLAGS" + CXXFLAGS="$CXXFLAGS -std=c++0x" + cat >conftest.$ac_ext <<_ACEOF +/* confdefs.h. */ +_ACEOF +cat confdefs.h >>conftest.$ac_ext +cat >>conftest.$ac_ext <<_ACEOF +/* end confdefs.h. */ + +#include <atomic> +std::atomic<float> x(0.0f); +int main() { return (float)x; } + +_ACEOF +rm -f conftest.$ac_objext conftest$ac_exeext +if { (ac_try="$ac_link" +case "(($ac_try" in + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; + *) ac_try_echo=$ac_try;; +esac +eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5 + (eval "$ac_link") 2>conftest.er1 + ac_status=$? + grep -v '^ *+' conftest.er1 >conftest.err + rm -f conftest.er1 + cat conftest.err >&5 + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); } && + { ac_try='test -z "$ac_cxx_werror_flag" || test ! -s conftest.err' + { (case "(($ac_try" in + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; + *) ac_try_echo=$ac_try;; +esac +eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5 + (eval "$ac_try") 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); }; } && + { ac_try='test -s conftest$ac_exeext' + { (case "(($ac_try" in + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; + *) ac_try_echo=$ac_try;; +esac +eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5 + (eval "$ac_try") 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); }; }; then + { echo "$as_me:$LINENO: result: yes" >&5 +echo "${ECHO_T}yes" >&6; } +else + echo "$as_me: failed program was:" >&5 +sed 's/^/| /' conftest.$ac_ext >&5 + + { echo "$as_me:$LINENO: result: no" >&5 +echo "${ECHO_T}no" >&6; } + { { echo "$as_me:$LINENO: error: +We detected a missing feature in the standard C++ library that was known to be +missing in libstdc++4.6 and implemented in libstdc++4.7. There are numerous +C++11 problems with 4.6's library, and we don't support GCCs or libstdc++ older +than 4.7. You will need to update your system and ensure Clang uses the newer +standard library. + +If this error is incorrect or you need to force things to work, you may pass +'--disable-compiler-version-checks' to configure to bypass this test." >&5 +echo "$as_me: error: +We detected a missing feature in the standard C++ library that was known to be +missing in libstdc++4.6 and implemented in libstdc++4.7. There are numerous +C++11 problems with 4.6's library, and we don't support GCCs or libstdc++ older +than 4.7. You will need to update your system and ensure Clang uses the newer +standard library. + +If this error is incorrect or you need to force things to work, you may pass +'--disable-compiler-version-checks' to configure to bypass this test." >&2;} + { (exit 1); exit 1; }; } +fi + +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext + CXXFLAGS="$llvm_cv_old_cxxflags" + ;; + gcc) + { echo "$as_me:$LINENO: checking whether GCC is new enough" >&5 +echo $ECHO_N "checking whether GCC is new enough... $ECHO_C" >&6; } + cat >conftest.$ac_ext <<_ACEOF +/* confdefs.h. */ +_ACEOF +cat confdefs.h >>conftest.$ac_ext +cat >>conftest.$ac_ext <<_ACEOF +/* end confdefs.h. */ + +#if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 7) +#error This version of GCC is too old to build LLVM +#endif + +_ACEOF +rm -f conftest.$ac_objext +if { (ac_try="$ac_compile" +case "(($ac_try" in + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; + *) ac_try_echo=$ac_try;; +esac +eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5 + (eval "$ac_compile") 2>conftest.er1 + ac_status=$? + grep -v '^ *+' conftest.er1 >conftest.err + rm -f conftest.er1 + cat conftest.err >&5 + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); } && + { ac_try='test -z "$ac_cxx_werror_flag" || test ! -s conftest.err' + { (case "(($ac_try" in + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; + *) ac_try_echo=$ac_try;; +esac +eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5 + (eval "$ac_try") 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); }; } && + { ac_try='test -s conftest.$ac_objext' + { (case "(($ac_try" in + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; + *) ac_try_echo=$ac_try;; +esac +eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5 + (eval "$ac_try") 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); }; }; then + { echo "$as_me:$LINENO: result: yes" >&5 +echo "${ECHO_T}yes" >&6; } +else + echo "$as_me: failed program was:" >&5 +sed 's/^/| /' conftest.$ac_ext >&5 + + { echo "$as_me:$LINENO: result: no" >&5 +echo "${ECHO_T}no" >&6; } + { { echo "$as_me:$LINENO: error: +The selected GCC C++ compiler is not new enough to build LLVM. Please upgrade +to GCC 4.7. You may pass --disable-compiler-version-checks to configure to +bypass these sanity checks." >&5 +echo "$as_me: error: +The selected GCC C++ compiler is not new enough to build LLVM. Please upgrade +to GCC 4.7. You may pass --disable-compiler-version-checks to configure to +bypass these sanity checks." >&2;} + { (exit 1); exit 1; }; } +fi + +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext + ;; + unknown) + ;; + esac + ac_ext=c +ac_cpp='$CPP $CPPFLAGS' +ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5' +ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' +ac_compiler_gnu=$ac_cv_c_compiler_gnu + + ;; + *) + { { echo "$as_me:$LINENO: error: Invalid setting for --enable-compiler-version-checks. Use \"yes\" or \"no\"" >&5 +echo "$as_me: error: Invalid setting for --enable-compiler-version-checks. Use \"yes\" or \"no\"" >&2;} + { (exit 1); exit 1; }; } + ;; +esac + # Check whether --enable-cxx11 was given. if test "${enable_cxx11+set}" = set; then enableval=$enable_cxx11; |