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uclibc++: remove

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No package here depends on it. Furthermore, uClibc++ is a fairly buggy
C++ library and seems to be relatively inactive upstream.

It also lacks proper support for modern C++11 features.

The main benefit of it is size: 66.6 KB	vs 287.3 KB on mips24kc. Static
linking and LTO can help bring the size down of packages that need it.

Added warning message to uclibc++.mk

Signed-off-by: Rosen Penev <rosenp@gmail.com>
Acked-by: Hauke Mehrtens <hauke@hauke-m.de>
This commit is contained in:
Rosen Penev 2021-02-26 20:17:46 -08:00 committed by Hauke Mehrtens
parent 09465d802b
commit 6b2ed6101e
9 changed files with 2 additions and 428 deletions
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14
config/Config-build.in
View File

@ -217,20 +217,6 @@ menu "Global build settings"
make the system libraries incompatible with most of the packages that are
not selected during the build process.
choice
prompt "Preferred standard C++ library"
default USE_LIBSTDCXX if USE_GLIBC
default USE_UCLIBCXX
help
Select the preferred standard C++ library for all packages that support this.
config USE_UCLIBCXX
bool "uClibc++"
config USE_LIBSTDCXX
bool "libstdc++"
endchoice
comment "Hardening build options"
config PKG_CHECK_FORMAT_SECURITY

18
include/uclibc++.mk
View File

@ -1,16 +1,2 @@
ifndef DUMP
ifdef __package_mk
$(error uclibc++.mk must be included before package.mk)
endif
endif
PKG_PREPARED_DEPENDS += CONFIG_USE_UCLIBCXX
CXX_DEPENDS = +USE_UCLIBCXX:uclibcxx +USE_LIBSTDCXX:libstdcpp
ifneq ($(CONFIG_USE_UCLIBCXX),)
ifneq ($(CONFIG_CCACHE),)
TARGET_CXX_NOCACHE=g++-uc
else
TARGET_CXX=g++-uc
endif
endif
$(warn uclibc++.mk is deprecated. Please remove it and CXX_DEPENDS)
CXX_DEPENDS = +libstdcpp

105
package/libs/uclibc++/Makefile
View File

@ -1,105 +0,0 @@
#
# Copyright (C) 2006-2012 OpenWrt.org
# Copyright (c) 2016 LEDE project
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
include $(TOPDIR)/rules.mk
PKG_NAME:=uclibc++
PKG_VERSION:=0.2.5
PKG_RELEASE:=3
PKG_SOURCE:=uClibc++-$(PKG_VERSION).tar.xz
PKG_SOURCE_URL:=https://cxx.uclibc.org/src/
PKG_HASH:=596fb9ed7295564ce4c70ae6076a18f92e72f70310d70c98520bbca85c77895a
PKG_BUILD_DIR:=$(BUILD_DIR)/uClibc++-$(PKG_VERSION)
PKG_LICENSE:=LGPL-2.1-or-later
PKG_INSTALL:=1
PKG_BUILD_PARALLEL:=1
PKG_USE_MIPS16:=0
include $(INCLUDE_DIR)/package.mk
define Package/uclibcxx
NAME:=uclibc++
SECTION:=libs
CATEGORY:=Libraries
TITLE:=C++ library for embedded systems
URL:=https://cxx.uclibc.org/
endef
UCLIBC_TARGET_ARCH:=$(shell echo $(ARCH) | sed -e s'/-.*//' \
-e 's/i.86/i386/' \
-e 's/sparc.*/sparc/' \
-e 's/m68k.*/m68k/' \
-e 's/ppc/powerpc/g' \
-e 's/v850.*/v850/g' \
-e 's/sh64/sh/' \
-e 's/sh[234].*/sh/' \
-e 's/mips.*/mips/' \
-e 's/mipsel.*/mips/' \
)
TARGET_CFLAGS += $(FPIC) -nostdinc++ -std=c++11
TARGET_LDFLAGS += -Wl,--gc-sections
ifneq ($(CONFIG_CCACHE),)
TARGET_CXX=$(TARGET_CXX_NOCACHE)
endif
ifeq ($(CONFIG_USE_MUSL),y)
SSP_LIB=-lssp_nonshared
endif
ifeq (${V}, s)
MAKE_VARS+= \
V=1
else ifeq (${V}, sc)
MAKE_VARS+= \
V=2
endif
MAKE_FLAGS:= \
$(TARGET_CONFIGURE_OPTS) \
CPU_CFLAGS="$(TARGET_CFLAGS)" \
CROSS_COMPILE="$(TARGET_CROSS)" \
LDFLAGS="$(TARGET_LDFLAGS)" \
GEN_LIBS="-lc $(LIBGCC_S) $(SSP_LIB)" \
check_as_needed=
# check_as_needed overrides dependency on libgcc_s
define Build/Configure
if [ -f ./files/config.$(UCLIBC_TARGET_ARCH) ]; then \
cp ./files/config.$(UCLIBC_TARGET_ARCH) $(PKG_BUILD_DIR)/.config; \
else \
cp ./files/config.default $(PKG_BUILD_DIR)/.config; \
fi
endef
define Build/InstallDev
$(INSTALL_DIR) $(2)/bin $(1)/usr/include/uClibc++ $(1)/usr/lib
$(INSTALL_BIN) $(PKG_INSTALL_DIR)/bin/g++-uc $(TOOLCHAIN_DIR)/bin/
$(CP) $(PKG_INSTALL_DIR)/include/* $(1)/usr/include/uClibc++/
$(CP) $(PKG_INSTALL_DIR)/lib/libuClibc++*.{a,so}* $(1)/usr/lib/
$(SED) 's!\(^\|[[:space:]]\)-[IL]$(TOOLCHAIN_DIR)/[^[:space:]]*!!g' $(TOOLCHAIN_DIR)/bin/g++-uc
$(SED) 's|-I/include/|-I$$$${STAGING_DIR:-$(STAGING_DIR)}/usr/include/uClibc++/|g' $(TOOLCHAIN_DIR)/bin/g++-uc
$(SED) 's|-L/lib/|-L$$$${STAGING_DIR:-$(STAGING_DIR)}/lib/|g' $(TOOLCHAIN_DIR)/bin/g++-uc
# add another wrapper which links against both uClibc++ and libstdc++
$(INSTALL_BIN) $(TOOLCHAIN_DIR)/bin/g++-uc $(TOOLCHAIN_DIR)/bin/g++-uc+std
$(SED) 's|^WRAPPER_INCLUDEDIR=.*||g' $(TOOLCHAIN_DIR)/bin/g++-uc+std
$(SED) 's|-luClibc++|-Wl,-Bdynamic,-luClibc++,-Bstatic,-lstdc++,-Bdynamic|g' $(TOOLCHAIN_DIR)/bin/g++-uc+std
$(SED) 's|-nostdinc++||g' $(TOOLCHAIN_DIR)/bin/g++-uc+std
endef
define Package/uclibcxx/install
$(INSTALL_DIR) $(1)/usr/lib
$(CP) $(PKG_INSTALL_DIR)/lib/libuClibc++.so.* $(1)/usr/lib/
$(CP) $(PKG_INSTALL_DIR)/lib/libuClibc++-*.so $(1)/usr/lib/
endef
$(eval $(call BuildPackage,uclibcxx))

58
package/libs/uclibc++/files/config.default
View File

@ -1,58 +0,0 @@
#
# Automatically generated make config: don't edit
#
#
# Target Features and Options
#
UCLIBCXX_HAS_FLOATS=y
# UCLIBCXX_HAS_LONG_DOUBLE is not set
# UCLIBCXX_HAS_TLS is not set
UCLIBCXX_WARNINGS=""
BUILD_EXTRA_LIBRARIES=""
HAVE_DOT_CONFIG=y
#
# String and I/O Stream Support
#
UCLIBCXX_HAS_WCHAR=y
UCLIBCXX_IOSTREAM_BUFSIZE=32
UCLIBCXX_HAS_LFS=y
UCLIBCXX_SUPPORT_CDIR=y
UCLIBCXX_SUPPORT_CIN=y
UCLIBCXX_SUPPORT_COUT=y
UCLIBCXX_SUPPORT_CERR=y
UCLIBCXX_SUPPORT_CLOG=y
# UCLIBCXX_SUPPORT_WCIN is not set
# UCLIBCXX_SUPPORT_WCOUT is not set
# UCLIBCXX_SUPPORT_WCERR is not set
# UCLIBCXX_SUPPORT_WCLOG is not set
#
# STL and Code Expansion
#
UCLIBCXX_STL_BUFFER_SIZE=32
UCLIBCXX_CODE_EXPANSION=y
UCLIBCXX_EXPAND_CONSTRUCTORS_DESTRUCTORS=y
UCLIBCXX_EXPAND_STRING_CHAR=y
UCLIBCXX_EXPAND_VECTOR_BASIC=y
UCLIBCXX_EXPAND_IOS_CHAR=y
UCLIBCXX_EXPAND_STREAMBUF_CHAR=y
UCLIBCXX_EXPAND_ISTREAM_CHAR=y
UCLIBCXX_EXPAND_OSTREAM_CHAR=y
UCLIBCXX_EXPAND_FSTREAM_CHAR=y
UCLIBCXX_EXPAND_SSTREAM_CHAR=y
#
# Library Installation Options
#
UCLIBCXX_RUNTIME_PREFIX=""
UCLIBCXX_RUNTIME_INCLUDE_SUBDIR="/include"
UCLIBCXX_RUNTIME_LIB_SUBDIR="/lib"
UCLIBCXX_RUNTIME_BIN_SUBDIR="/bin"
UCLIBCXX_EXCEPTION_SUPPORT=y
IMPORT_LIBSUP=y
# IMPORT_LIBGCC_EH is not set
BUILD_STATIC_LIB=y
# BUILD_ONLY_STATIC_LIB is not set
# DODEBUG is not set

10
package/libs/uclibc++/patches/001-no-ansi.patch
View File

@ -1,10 +0,0 @@
--- a/Rules.mak
+++ b/Rules.mak
@@ -232,7 +232,6 @@ endif
GEN_CXXFLAGS:=-nostdinc++
GEN_CXXFLAGS+=$(if $(CXXFLAG_-fvisibility-inlines-hidden),-DGCC_HASCLASSVISIBILITY)
CXXFLAGS:=$(CFLAGS)
-CFLAGS += -ansi
LIBGCC:=$(shell $(CC) -print-libgcc-file-name)
LIBGCC_DIR:=$(dir $(LIBGCC))

35
package/libs/uclibc++/patches/002-undef-functions.patch
View File

@ -1,35 +0,0 @@
From 8245f62c1e7aba150f666b3c3a1dda646dee6d4b Mon Sep 17 00:00:00 2001
From: Rosen Penev <rosenp@gmail.com>
Date: Fri, 27 Sep 2019 13:12:44 -0700
Subject: [PATCH] cstdio: Add undef for four functions
When compiling with uClibc-ng, these functions get defined as macros and
become unavailable for std.
Fixes programs that use the std versions of these functions.
This matches libstdcpp behavior.
Signed-off-by: Rosen Penev <rosenp@gmail.com>
---
include/cstdio | 9 +++++++++
1 file changed, 9 insertions(+)
--- a/include/cstdio
+++ b/include/cstdio
@@ -21,6 +21,15 @@
#ifndef __HEADER_CSTDIO
#define __HEADER_CSTDIO 1
+#undef clearerr
+#undef feof
+#undef ferror
+#undef fgetc
+#undef fputc
+#undef getc
+#undef getchar
+#undef putc
+#undef putchar
namespace std{
using ::FILE;

10
package/libs/uclibc++/patches/003-no-fPIC.patch
View File

@ -1,10 +0,0 @@
--- a/Rules.mak
+++ b/Rules.mak
@@ -185,7 +185,6 @@ export UCLIBCXX_RUNTIME_PREFIX UCLIBCXX_
WRAPPER = $(top_builddir)bin/g++-uc
OPTIMIZATION:=
-PICFLAG:=-fPIC
# use '-Os' optimization if available, else use -O2, allow Config to override
$(eval $(call check-gcc-var,-Os))

143
package/libs/uclibc++/patches/004-uClibc-Make-long-long-available-to-C-11.patch
View File

@ -1,143 +0,0 @@
From 8151579eb36d9366632242415ff3f5177fa5e1e2 Mon Sep 17 00:00:00 2001
From: Rosen Penev <rosenp@gmail.com>
Date: Thu, 3 Oct 2019 18:58:43 -0700
Subject: [PATCH] uClibc++: Make long long available to C++11
C++11 makes long long available. It is no longer a GNU extension.
Signed-off-by: Rosen Penev <rosenp@gmail.com>
---
include/istream | 4 ++--
include/istream_helpers | 2 +-
include/ostream | 8 ++++----
include/ostream_helpers | 8 ++++----
tests/sstreamtest.cpp | 4 ++--
5 files changed, 13 insertions(+), 13 deletions(-)
--- a/include/istream
+++ b/include/istream
@@ -72,7 +72,7 @@ namespace std{
basic_istream<charT,traits>& operator>>(void*& p);
basic_istream<charT,traits>& operator>>(basic_streambuf<char_type,traits>* sb);
-#ifndef __STRICT_ANSI__
+#if !defined(__STRICT_ANSI__) || (__cplusplus >= 201103L)
basic_istream<charT,traits>& operator>>(long long& n);
basic_istream<charT,traits>& operator>>(unsigned long long& n);
#endif
@@ -455,7 +455,7 @@ namespace std{
return *this;
}
-#ifndef __STRICT_ANSI__
+#if !defined(__STRICT_ANSI__) || (__cplusplus >= 201103L)
template <class charT, class traits> _UCXXEXPORT basic_istream<charT,traits>&
basic_istream<charT,traits>::operator>>(long long& n)
{
--- a/include/istream_helpers
+++ b/include/istream_helpers
@@ -301,7 +301,7 @@ namespace std{
};
-#ifndef __STRICT_ANSI__
+#if !defined(__STRICT_ANSI__) || (__cplusplus >= 201103L)
template <class traits> class _UCXXEXPORT __istream_readin<traits, char, long long>{
public:
inline static void readin(basic_istream<char, traits >& stream, long long & var)
--- a/include/ostream
+++ b/include/ostream
@@ -85,7 +85,7 @@ namespace std {
basic_ostream<charT,traits>& operator<<(long double f);
basic_ostream<charT,traits>& operator<<(void* p);
basic_ostream<charT,traits>& operator<<(basic_streambuf<char_type,traits>* sb);
-#ifndef __STRICT_ANSI__
+#if !defined(__STRICT_ANSI__) || (__cplusplus >= 201103L)
basic_ostream<charT,traits>& operator<<(long long n);
basic_ostream<charT,traits>& operator<<(unsigned long long n);
#endif
@@ -221,7 +221,7 @@ namespace std {
return *this;
}
-#ifndef __STRICT_ANSI__
+#if !defined(__STRICT_ANSI__) || (__cplusplus >= 201103L)
template <class charT, class traits> _UCXXEXPORT basic_ostream<charT,traits>& basic_ostream<charT, traits>::operator<<(long long n)
{
sentry s(*this);
@@ -487,7 +487,7 @@ namespace std {
#endif
-#ifndef __STRICT_ANSI__
+#if !defined(__STRICT_ANSI__) || (__cplusplus >= 201103L)
//Support for output of long long data types
@@ -509,7 +509,7 @@ template<class Ch, class Tr> _UCXXEXPORT
}
-#endif //__STRICT_ANSI__
+#endif // !defined(__STRICT_ANSI__) || (__cplusplus >= 201103L)
--- a/include/ostream_helpers
+++ b/include/ostream_helpers
@@ -142,7 +142,7 @@ namespace std{
}
};
-#ifndef __STRICT_ANSI__
+#if !defined(__STRICT_ANSI__) || (__cplusplus >= 201103L)
template <class traits> class _UCXXEXPORT __ostream_printout<traits, char, signed long long int>{
public:
@@ -237,7 +237,7 @@ namespace std{
};
-#endif //__STRICT_ANSI__
+#endif // !defined(__STRICT_ANSI__) || (__cplusplus >= 201103L)
template <class traits> class _UCXXEXPORT __ostream_printout<traits, char, double>{
public:
@@ -357,7 +357,7 @@ namespace std{
}
};
-#ifndef __STRICT_ANSI__
+#if !defined(__STRICT_ANSI__) || (__cplusplus >= 201103L)
template <class traits> class _UCXXEXPORT __ostream_printout<traits, wchar_t, signed long long int>{
public:
@@ -428,7 +428,7 @@ namespace std{
};
-#endif //__STRICT_ANSI__
+#endif // !defined(__STRICT_ANSI__) || (__cplusplus >= 201103L)
template <class traits> class _UCXXEXPORT __ostream_printout<traits, wchar_t, double>{
public:
--- a/tests/sstreamtest.cpp
+++ b/tests/sstreamtest.cpp
@@ -9,7 +9,7 @@ int main(){
int i;
std::string s;
char c;
-#ifndef __STRICT_ANSI__
+#if !defined(__STRICT_ANSI__) || (__cplusplus >= 201103L)
long long ll;
unsigned long long ull;
#endif
@@ -32,7 +32,7 @@ int main(){
-#ifndef __STRICT_ANSI__
+#if !defined(__STRICT_ANSI__) || (__cplusplus >= 201103L)
a.str("678 76 54");
a >> ll >> ull >> s;
std::cout << "ll (should be 678): " << ll << std::endl;

37
package/libs/uclibc++/patches/005-istream_helpers-Fix-sscanf-typo.patch
View File

@ -1,37 +0,0 @@
From 7f6dd860818512c0eb313320308b22ba7e2c7205 Mon Sep 17 00:00:00 2001
From: Rosen Penev <rosenp@gmail.com>
Date: Fri, 4 Oct 2019 20:06:53 -0700
Subject: [PATCH] istream_helpers: Fix sscanf typo
This caused readin not to work properly with long long types.
Found accidentally through a glibc warning
(declared with warn_unused_result).
Tested with gptfdisk on OpenWrt.
Signed-off-by: Rosen Penev <rosenp@gmail.com>
---
include/istream_helpers | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/include/istream_helpers
+++ b/include/istream_helpers
@@ -317,7 +317,7 @@ namespace std{
sscanf(temp.c_str(), "%llo", (unsigned long long *)&var );
}else if(stream.flags() & ios_base::hex){
if(stream.flags() & ios_base::uppercase){
- scanf(temp.c_str(), "%llX", (unsigned long long *)&var );
+ sscanf(temp.c_str(), "%llX", (unsigned long long *)&var );
}else{
sscanf(temp.c_str(), "%llx", (unsigned long long *)&var);
}
@@ -344,7 +344,7 @@ namespace std{
sscanf(temp.c_str(), "%llo", &var );
}else if(stream.flags() & ios_base::hex){
if(stream.flags() & ios_base::uppercase){
- scanf(temp.c_str(), "%llX", &var );
+ sscanf(temp.c_str(), "%llX", &var );
}else{
sscanf(temp.c_str(), "%llx", &var);
}