From 3e5e122a3a7071b8cc90abc41227417a1c45566d Mon Sep 17 00:00:00 2001 From: Ekaitz Zarraga Date: Fri, 6 Sep 2024 21:53:08 +0200 Subject: embedded: add arm-toolchain by Rutherther --- patches/newlib-getentropy.patch | 380 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 380 insertions(+) create mode 100644 patches/newlib-getentropy.patch (limited to 'patches') diff --git a/patches/newlib-getentropy.patch b/patches/newlib-getentropy.patch new file mode 100644 index 0000000..a4137d8 --- /dev/null +++ b/patches/newlib-getentropy.patch @@ -0,0 +1,380 @@ +Patch-Source: https://github.com/zephyrproject-rtos/gcc/pull/8 + +From 55addb0c0c5ff5e0aab85574aa26abf175af85c8 Mon Sep 17 00:00:00 2001 +From: Stephanos Ioannidis +Date: Mon, 25 Jul 2022 23:10:41 +0900 +Subject: [PATCH] libstdc++: Do not check getentropy and arc4random for cross builds + +The "getentropy" and "arc4random" check may not yield a correct result +for the cross compile builds because linking is often not available for +them and the C library headers (notoriously, newlib) may still declare +these function prototypes even if they are not actually part of the +final library -- for this reason, this commit disables the "getentropy" +and "arc4random" checks for non-native builds. + +This effectively prevents the std::random_device from making use of +these functions when `--with-newlib` is specified, which is indeed a +correct behaviour because the newlib does not provide a default stub +for the "getentropy" function (also note that the newlib "arc4random" +implementation internally calls the missing "getentropy" function). + +For other C libraries, the `GLIBCXX_CROSSCONFIG` function may hard-code +the availability of these functions by manually defining +`HAVE_GETENTROPY` and `HAVE_ARC4RANDOM`, or by calling the +`GLIBCXX_CHECK_GETENTROPY` and `GLIBCXX_CHECK_ARC4RANDOM` functions. + +libstdc++-v3: + * configure.ac: Relocate GLIBCXX_CHECK_GETENTROPY and + GLIBCXX_CHECK_ARC4RANDOM + * configure: Regenerate. + +Signed-off-by: Stephanos Ioannidis +--- + libstdc++-v3/configure | 300 +++++++++++++++++++------------------- + libstdc++-v3/configure.ac | 8 +- + 2 files changed, 154 insertions(+), 154 deletions(-) + +diff --git a/libstdc++-v3/configure b/libstdc++-v3/configure +index 0ce74e8202443..5d43b56b03ffa 100755 +--- a/libstdc++-v3/configure ++++ b/libstdc++-v3/configure +@@ -28088,6 +28088,156 @@ $as_echo "#define _GLIBCXX_USE_RANDOM_TR1 1" >>confdefs.h + + + ++ # Check for other random number APIs ++ ++ ++ ++ ac_ext=cpp ++ac_cpp='$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 ++ ++ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for getentropy" >&5 ++$as_echo_n "checking for getentropy... " >&6; } ++if ${glibcxx_cv_getentropy+:} false; then : ++ $as_echo_n "(cached) " >&6 ++else ++ ++ if test x$gcc_no_link = xyes; then ++ cat confdefs.h - <<_ACEOF >conftest.$ac_ext ++/* end confdefs.h. */ ++#include ++int ++main () ++{ ++unsigned i; ++ ::getentropy(&i, sizeof(i)); ++ ; ++ return 0; ++} ++_ACEOF ++if ac_fn_cxx_try_compile "$LINENO"; then : ++ glibcxx_cv_getentropy=yes ++else ++ glibcxx_cv_getentropy=no ++fi ++rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext ++else ++ if test x$gcc_no_link = xyes; then ++ as_fn_error $? "Link tests are not allowed after GCC_NO_EXECUTABLES." "$LINENO" 5 ++fi ++cat confdefs.h - <<_ACEOF >conftest.$ac_ext ++/* end confdefs.h. */ ++#include ++int ++main () ++{ ++unsigned i; ++ ::getentropy(&i, sizeof(i)); ++ ; ++ return 0; ++} ++_ACEOF ++if ac_fn_cxx_try_link "$LINENO"; then : ++ glibcxx_cv_getentropy=yes ++else ++ glibcxx_cv_getentropy=no ++fi ++rm -f core conftest.err conftest.$ac_objext \ ++ conftest$ac_exeext conftest.$ac_ext ++fi ++ ++fi ++{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_getentropy" >&5 ++$as_echo "$glibcxx_cv_getentropy" >&6; } ++ ++ if test $glibcxx_cv_getentropy = yes; then ++ ++$as_echo "#define HAVE_GETENTROPY 1" >>confdefs.h ++ ++ fi ++ 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 ++ ++ ++ ++ ++ ++ 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 ++ ++ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for arc4random" >&5 ++$as_echo_n "checking for arc4random... " >&6; } ++if ${glibcxx_cv_arc4random+:} false; then : ++ $as_echo_n "(cached) " >&6 ++else ++ ++ if test x$gcc_no_link = xyes; then ++ cat confdefs.h - <<_ACEOF >conftest.$ac_ext ++/* end confdefs.h. */ ++#include ++int ++main () ++{ ++unsigned i = ::arc4random(); ++ ; ++ return 0; ++} ++_ACEOF ++if ac_fn_cxx_try_compile "$LINENO"; then : ++ glibcxx_cv_arc4random=yes ++else ++ glibcxx_cv_arc4random=no ++fi ++rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext ++else ++ if test x$gcc_no_link = xyes; then ++ as_fn_error $? "Link tests are not allowed after GCC_NO_EXECUTABLES." "$LINENO" 5 ++fi ++cat confdefs.h - <<_ACEOF >conftest.$ac_ext ++/* end confdefs.h. */ ++#include ++int ++main () ++{ ++unsigned i = ::arc4random(); ++ ; ++ return 0; ++} ++_ACEOF ++if ac_fn_cxx_try_link "$LINENO"; then : ++ glibcxx_cv_arc4random=yes ++else ++ glibcxx_cv_arc4random=no ++fi ++rm -f core conftest.err conftest.$ac_objext \ ++ conftest$ac_exeext conftest.$ac_ext ++fi ++ ++fi ++{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_arc4random" >&5 ++$as_echo "$glibcxx_cv_arc4random" >&6; } ++ ++ if test $glibcxx_cv_arc4random = yes; then ++ ++$as_echo "#define HAVE_ARC4RANDOM 1" >>confdefs.h ++ ++ fi ++ 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 ++ ++ ++ + # For TLS support. + + +@@ -75519,156 +75669,6 @@ $as_echo "#define _GLIBCXX_X86_RDSEED 1" >>confdefs.h + fi + + +-# Check for other random number APIs +- +- +- +- ac_ext=cpp +-ac_cpp='$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 +- +- { $as_echo "$as_me:${as_lineno-$LINENO}: checking for getentropy" >&5 +-$as_echo_n "checking for getentropy... " >&6; } +-if ${glibcxx_cv_getentropy+:} false; then : +- $as_echo_n "(cached) " >&6 +-else +- +- if test x$gcc_no_link = xyes; then +- cat confdefs.h - <<_ACEOF >conftest.$ac_ext +-/* end confdefs.h. */ +-#include +-int +-main () +-{ +-unsigned i; +- ::getentropy(&i, sizeof(i)); +- ; +- return 0; +-} +-_ACEOF +-if ac_fn_cxx_try_compile "$LINENO"; then : +- glibcxx_cv_getentropy=yes +-else +- glibcxx_cv_getentropy=no +-fi +-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +-else +- if test x$gcc_no_link = xyes; then +- as_fn_error $? "Link tests are not allowed after GCC_NO_EXECUTABLES." "$LINENO" 5 +-fi +-cat confdefs.h - <<_ACEOF >conftest.$ac_ext +-/* end confdefs.h. */ +-#include +-int +-main () +-{ +-unsigned i; +- ::getentropy(&i, sizeof(i)); +- ; +- return 0; +-} +-_ACEOF +-if ac_fn_cxx_try_link "$LINENO"; then : +- glibcxx_cv_getentropy=yes +-else +- glibcxx_cv_getentropy=no +-fi +-rm -f core conftest.err conftest.$ac_objext \ +- conftest$ac_exeext conftest.$ac_ext +-fi +- +-fi +-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_getentropy" >&5 +-$as_echo "$glibcxx_cv_getentropy" >&6; } +- +- if test $glibcxx_cv_getentropy = yes; then +- +-$as_echo "#define HAVE_GETENTROPY 1" >>confdefs.h +- +- fi +- 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 +- +- +- +- +- +- 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 +- +- { $as_echo "$as_me:${as_lineno-$LINENO}: checking for arc4random" >&5 +-$as_echo_n "checking for arc4random... " >&6; } +-if ${glibcxx_cv_arc4random+:} false; then : +- $as_echo_n "(cached) " >&6 +-else +- +- if test x$gcc_no_link = xyes; then +- cat confdefs.h - <<_ACEOF >conftest.$ac_ext +-/* end confdefs.h. */ +-#include +-int +-main () +-{ +-unsigned i = ::arc4random(); +- ; +- return 0; +-} +-_ACEOF +-if ac_fn_cxx_try_compile "$LINENO"; then : +- glibcxx_cv_arc4random=yes +-else +- glibcxx_cv_arc4random=no +-fi +-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +-else +- if test x$gcc_no_link = xyes; then +- as_fn_error $? "Link tests are not allowed after GCC_NO_EXECUTABLES." "$LINENO" 5 +-fi +-cat confdefs.h - <<_ACEOF >conftest.$ac_ext +-/* end confdefs.h. */ +-#include +-int +-main () +-{ +-unsigned i = ::arc4random(); +- ; +- return 0; +-} +-_ACEOF +-if ac_fn_cxx_try_link "$LINENO"; then : +- glibcxx_cv_arc4random=yes +-else +- glibcxx_cv_arc4random=no +-fi +-rm -f core conftest.err conftest.$ac_objext \ +- conftest$ac_exeext conftest.$ac_ext +-fi +- +-fi +-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_arc4random" >&5 +-$as_echo "$glibcxx_cv_arc4random" >&6; } +- +- if test $glibcxx_cv_arc4random = yes; then +- +-$as_echo "#define HAVE_ARC4RANDOM 1" >>confdefs.h +- +- fi +- 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 +- +- +- + # This depends on GLIBCXX_ENABLE_SYMVERS and GLIBCXX_IS_NATIVE. + + # Do checks for resource limit functions. +diff --git a/libstdc++-v3/configure.ac b/libstdc++-v3/configure.ac +index e59bcdb29441f..05cdfcddbc43b 100644 +--- a/libstdc++-v3/configure.ac ++++ b/libstdc++-v3/configure.ac +@@ -269,6 +269,10 @@ if $GLIBCXX_IS_NATIVE; then + # For /dev/random and /dev/urandom for std::random_device. + GLIBCXX_CHECK_DEV_RANDOM + ++ # Check for other random number APIs ++ GLIBCXX_CHECK_GETENTROPY ++ GLIBCXX_CHECK_ARC4RANDOM ++ + # For TLS support. + GCC_CHECK_TLS + +@@ -474,10 +478,6 @@ GLIBCXX_CHECK_X86_RDRAND + # Check if assembler supports rdseed opcode. + GLIBCXX_CHECK_X86_RDSEED + +-# Check for other random number APIs +-GLIBCXX_CHECK_GETENTROPY +-GLIBCXX_CHECK_ARC4RANDOM +- + # This depends on GLIBCXX_ENABLE_SYMVERS and GLIBCXX_IS_NATIVE. + GLIBCXX_CONFIGURE_TESTSUITE + -- cgit v1.2.3