代码使用g++编译，但不使用arm-none-eabi-g++
Code compiles with g++ but not with arm-none-eabi-g++
我一直在尝试更改一些语法，以强制用户在访问我编写的STM32F4 Cortex-M4 CPU的简单库之前启用外围时钟。
在与以下代码斗争了几个小时后，我找不到我做错了什么，并试图用linux g++编译它，它成功了。
这是关于ARM g++的编译器错误吗？还是我一直在使用linux g++以前允许我使用的一些非标准行为？
下面是一个简化的代码示例：
#include <cstdint>
template<std::size_t port>
class Port
{
public: //Declarations
enum class PinMode
{
Input = 0x0,
Output = 0x1,
Alternate = 0x2,
Analog = 0x3
};
template<uint8_t nPin, PinMode mode>
class Pin
{
};
template<uint8_t nPin>
class Pin<nPin, PinMode::Output>
{
public: //Declarations
enum class OutputSpeed : uint32_t
{
Low,
Medium,
Fast,
High
};
enum class PullMode : uint32_t
{
None = 0x0,
PullUp = 0x1,
PullDown = 0x2
};
public: //Methods
void setOutputSpeed(OutputSpeed const ospeed) volatile;
void setPullMode(PullMode const ppm) volatile;
void set() volatile
{
reinterpret_cast<Port<port> volatile*>(port)->m_BSRR |= static_cast<uint16_t>(0x1) <<nPin;
}
void reset() volatile;
bool getOutputState() volatile;
}; //END OutputPin
public: //Registers
uint32_t m_BSRR;
}; //END Port
int main()
{
auto pin = Port<0>::Pin<5, Port<0>::PinMode::Output>();
pin.set();
}
ARM g++输出。
Using built-in specs.
COLLECT_GCC=arm-none-eabi-g++
COLLECT_LTO_WRAPPER=/usr/lib/gcc/arm-none-eabi/4.8.2/lto-wrapper
Target: arm-none-eabi
Configured with: ../configure --target=arm-none-eabi --prefix=/usr --libexecdir=/usr/lib --with-pkgversion='Arch Repository' --with-bugurl=https://bugs.archlinux.org/ --enable-multilib --enable-interwork --enable-languages=c,c++ --with-newlib --with-gnu-as --with-gnu-ld --disable-nls --disable-shared --disable-threads --with-headers=newlib/libc/include --disable-libssp --disable-libstdcxx-pch --disable-libmudflap --disable-libgomp --with-system-zlib --disable-newlib-supplied-syscalls
Thread model: single
gcc version 4.8.2 (Arch Repository)
COLLECT_GCC_OPTIONS='-std=c++11' '-v'
/usr/lib/gcc/arm-none-eabi/4.8.2/cc1plus -quiet -v -D__USES_INITFINI__ test.cpp -quiet -dumpbase test.cpp -auxbase test -std=c++11 -version -o /tmp/cc6TlpeV.s
GNU C++ (Arch Repository) version 4.8.2 (arm-none-eabi)
compiled by GNU C version 4.8.2 20140206 (prerelease), GMP version 5.1.3, MPFR version 3.1.2-p5, MPC version 1.0.2
warning: GMP header version 5.1.3 differs from library version 6.0.0.
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
ignoring nonexistent directory "/usr/lib/gcc/arm-none-eabi/4.8.2/../../../../arm-none-eabi/sys-include"
#include "..." search starts here:
#include <...> search starts here:
/usr/lib/gcc/arm-none-eabi/4.8.2/../../../../arm-none-eabi/include/c++/4.8.2
/usr/lib/gcc/arm-none-eabi/4.8.2/../../../../arm-none-eabi/include/c++/4.8.2/arm-none-eabi
/usr/lib/gcc/arm-none-eabi/4.8.2/../../../../arm-none-eabi/include/c++/4.8.2/backward
/usr/lib/gcc/arm-none-eabi/4.8.2/include
/usr/lib/gcc/arm-none-eabi/4.8.2/include-fixed
/usr/lib/gcc/arm-none-eabi/4.8.2/../../../../arm-none-eabi/include
End of search list.
GNU C++ (Arch Repository) version 4.8.2 (arm-none-eabi)
compiled by GNU C version 4.8.2 20140206 (prerelease), GMP version 5.1.3, MPFR version 3.1.2-p5, MPC version 1.0.2
warning: GMP header version 5.1.3 differs from library version 6.0.0.
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 8ead046d6b54a8fe43e9a23d5562e5d4
test.cpp: In function 'int main()':
test.cpp:60:7: error: 'class Port<0u>::Pin<5u, (Port<0u>::PinMode)1>' has no member named 'set'
pin.set();
^
G++输出：
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-unknown-linux-gnu/4.8.2/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: /build/gcc/src/gcc-4.8-20140206/configure --prefix=/usr --libdir=/usr/lib --libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=https://bugs.archlinux.org/ --enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++ --enable-shared --enable-threads=posix --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-clocale=gnu --disable-libstdcxx-pch --disable-libssp --enable-gnu-unique-object --enable-linker-build-id --enable-cloog-backend=isl --disable-cloog-version-check --enable-lto --enable-plugin --enable-install-libiberty --with-linker-hash-style=gnu --disable-multilib --disable-werror --enable-checking=release
Thread model: posix
gcc version 4.8.2 20140206 (prerelease) (GCC)
COLLECT_GCC_OPTIONS='-std=c++11' '-v' '-shared-libgcc' '-mtune=generic' '-march=x86-64'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.8.2/cc1plus -quiet -v -D_GNU_SOURCE test.cpp -quiet -dumpbase test.cpp -mtune=generic -march=x86-64 -auxbase test -std=c++11 -version -o /tmp/ccgCeLLA.s
GNU C++ (GCC) version 4.8.2 20140206 (prerelease) (x86_64-unknown-linux-gnu)
compiled by GNU C version 4.8.2 20140206 (prerelease), GMP version 5.1.3, MPFR version 3.1.2-p5, MPC version 1.0.2
warning: GMP header version 5.1.3 differs from library version 6.0.0.
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
ignoring nonexistent directory "/usr/lib/gcc/x86_64-unknown-linux-gnu/4.8.2/../../../../x86_64-unknown-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.8.2/../../../../include/c++/4.8.2
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.8.2/../../../../include/c++/4.8.2/x86_64-unknown-linux-gnu
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.8.2/../../../../include/c++/4.8.2/backward
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.8.2/include
/usr/local/include
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.8.2/include-fixed
/usr/include
End of search list.
GNU C++ (GCC) version 4.8.2 20140206 (prerelease) (x86_64-unknown-linux-gnu)
compiled by GNU C version 4.8.2 20140206 (prerelease), GMP version 5.1.3, MPFR version 3.1.2-p5, MPC version 1.0.2
warning: GMP header version 5.1.3 differs from library version 6.0.0.
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 51ac5eb9b6c30af2da1950e6dfed6398
COLLECT_GCC_OPTIONS='-std=c++11' '-v' '-shared-libgcc' '-mtune=generic' '-march=x86-64'
as -v --64 -o /tmp/ccWIQqrr.o /tmp/ccgCeLLA.s
GNU assembler version 2.24 (x86_64-unknown-linux-gnu) using BFD version (GNU Binutils) 2.24
COMPILER_PATH=/usr/lib/gcc/x86_64-unknown-linux-gnu/4.8.2/:/usr/lib/gcc/x86_64-unknown-linux-gnu/4.8.2/:/usr/lib/gcc/x86_64-unknown-linux-gnu/:/usr/lib/gcc/x86_64-unknown-linux-gnu/4.8.2/:/usr/lib/gcc/x86_64-unknown-linux-gnu/
LIBRARY_PATH=/usr/lib/gcc/x86_64-unknown-linux-gnu/4.8.2/:/usr/lib/gcc/x86_64-unknown-linux-gnu/4.8.2/../../../../lib/:/lib/../lib/:/usr/lib/../lib/:/usr/lib/gcc/x86_64-unknown-linux-gnu/4.8.2/../../../:/lib/:/usr/lib/
COLLECT_GCC_OPTIONS='-std=c++11' '-v' '-shared-libgcc' '-mtune=generic' '-march=x86-64'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.8.2/collect2 --build-id --eh-frame-hdr --hash-style=gnu -m elf_x86_64 -dynamic-linker /lib64/ld-linux-x86-64.so.2 /usr/lib/gcc/x86_64-unknown-linux-gnu/4.8.2/../../../../lib/crt1.o /usr/lib/gcc/x86_64-unknown-linux-gnu/4.8.2/../../../../lib/crti.o /usr/lib/gcc/x86_64-unknown-linux-gnu/4.8.2/crtbegin.o -L/usr/lib/gcc/x86_64-unknown-linux-gnu/4.8.2 -L/usr/lib/gcc/x86_64-unknown-linux-gnu/4.8.2/../../../../lib -L/lib/../lib -L/usr/lib/../lib -L/usr/lib/gcc/x86_64-unknown-linux-gnu/4.8.2/../../.. /tmp/ccWIQqrr.o -lstdc++ -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc /usr/lib/gcc/x86_64-unknown-linux-gnu/4.8.2/crtend.o /usr/lib/gcc/x86_64-unknown-linux-gnu/4.8.2/../../../../lib/crtn.o
您的代码中有两个问题。
不知道为什么，但是在模板中有enum类不能正常工作。由于这是模板和新的c++功能的一个角落，很难在标准中找到禁止它的确切位置。甚至可能是编译器错误。
所以，固定代码看起来像：
#include <cstdint>
enum class PinMode
{
Input = 0x0,
Output = 0x1,
Alternate = 0x2,
Analog = 0x3
};
enum class OutputSpeed : uint32_t
{
Low,
Medium,
Fast,
High
};
enum class PullMode : uint32_t
{
None = 0x0,
PullUp = 0x1,
PullDown = 0x2
};
template<std::size_t port>
class Port
{
public: //Declarations
template<uint8_t nPin, PinMode mode>
class Pin;
template<uint8_t nPin>
class Pin<nPin, PinMode::Output>
{
public: //Methods
void setOutputSpeed(OutputSpeed const ospeed) volatile;
void setPullMode(PullMode const ppm) volatile;
void set() volatile
{
reinterpret_cast<Port<port> volatile*>(port)->m_BSRR |= static_cast<uint16_t>(0x1) <<nPin;
}
void reset() volatile;
bool getOutputState() volatile;
}; //END OutputPin
public: //Registers
uint32_t m_BSRR;
}; //END Port
int main()
{
auto pin = Port<0>::Pin< 5, PinMode::Output >();
pin.set();
}
不是真正的"答案"，而是太多的文本无法写入评论。我在x86-64的g++4.8.2中看到了同样的问题（大约在3月底或4月初从源代码构建的住宅）。
编译器似乎是在使用通用模板，而不是专用模板。
template<uint8_t nPin, PinMode mode>
class Pin
{
};
其实际上没有CCD_ 1成员。如果我在该类中添加一个set成员，代码就会编译。我不知道为什么编译器认为使用这个类比使用专用类更好。我怀疑这是4.8.2中的一个错误。
（我确实注意到x86-64的g++4.8.2是一个"预发行版"，这可以解释为什么它在两种体系结构上不同）。
它在clang++3.5（截至昨天的不稳定分支）和g++4.6.3中编译。它不使用clang++2.9进行编译。
相关文章：
- redefine printf(), sprintf(), etc. arm-none-eabi toolchain
- arm-none-eabi-g++ 不能使用 -flto 正确处理弱别名
- arm-none-eabi-g++:没有这样的文件或目录
- 使用 arm-none-eabi-gcc、newlib 和 cmake 连接 C/C++ STM32 项目
- 将 LTO 与 arm-none-eabi 和 newlib-nano 一起使用
- 在独立(裸金属）项目上使用std::tuple with arm none eabi gcc
- g++arm none eabi从4.9升级到gcc 8.2.生成的二进制文件不再适合闪存
- 交叉编译错误"arm-none-eabi-g++ cannot find entry symbol"
- arm-none-eabi-g++ 忽略表达式 stm32f4 中的无效字符"#"
- GCC arm-none-eabi (Codesourcery) and C++ Exceptions
- arm-none-eabi-g++ 编译器抛出编译错误pthread_exit未在此范围内声明
- -l在arm none eabi gcc中的用法
- arm-none-eabi-g++ 找不到 stdc++ 标头
- 链接使用 arm-none-eabi-g++ 成功，但不能使用 arm-none-eabi-gcc
- arm-none-eabi- c++调用全局构造函数
- 发送:arm-none-eabi-gdb——version后无法确定GDB版本，response:
- SCONS 错误"sh： 1： arm-none-eabi-gcc： 未找到
- arm-none-eabi-g++正在尝试为桌面而不是arm进行编译
- 代码使用g++编译，但不使用arm-none-eabi-g++
- 如何为MinGW用户安装gcc-arm-none-eabi
