打开Support C++ features后编译失败

发布于 2018-12-11 23:14:28 浏览：2331 订阅该版

移植一个开源项目，想把它的操作系统换成rtthread。它是用c++写的，所以我尝试了下rtthread的c++组件，打开后编译失败，具体信息如下：

rthread分支：stable-v3.0.x
commit id: 60265d9
bsp: stm32f4xx-HAL

通过env配置，打开了如下选项：
Support C++ features
Enable libc APIs from toolchain
Enable pthreads APIs

编译的错误提示如下：

Error in calling:
g++ -o "build\kernel\components\cplusplus\crt.o" -c -mcpu=cortex-m4 -mthumb -mfpu=fpv4-sp-d16 -mfloat-abi=hard -ffunction-sections -fdata-sections -std=c99 -Dgcc -O0 -gdwarf-2 -g -DHAVE_CCONFIG_H -DSTM32F407xx -DUSE_HAL_DRIVER -DRT_USING_NEWLIB -I. -Iapplications -Idrivers -ILibraries\CMSIS\Device\ST\STM32F4xx\Include -ILibraries\CMSIS\Include -ILibraries\STM32F4xx_HAL_Driver\Inc -IE:\Embedded\RT-Thread\src t-thread\include -IE:\Embedded\RT-Thread\src t-thread\libcpu\arm\cortex-m4 -IE:\Embedded\RT-Thread\src t-thread\libcpu\arm\common -IE:\Embedded\RT-Thread\src t-thread\components\cplusplus -IE:\Embedded\RT-Thread\src t-thread\components\drivers\include -IE:\Embedded\RT-Thread\src t-thread\components\drivers\include -IE:\Embedded\RT-Thread\src t-thread\components\drivers\include -IE:\Embedded\RT-Thread\src t-thread\components\finsh -IE:\Embedded\RT-Thread\src t-thread\components\libc\compilers<br>ewlib -IE:\Embedded\RT-Thread\src t-thread\components\libc\pthreads -IE:\Embedded\RT-Thread\src t-thread\components\libc\time "E:\Embedded\RT-Thread\src t-thread\components\cplusplus\crt.cpp"
Exception: [Error 2] : No such file or directory
scons: *** [build\kernel\components\cplusplus\crt.o] Error 2
scons: building terminated because of errors.

E:\Embedded\RT-Thread\src t-thread\components\cplusplus\crt.cpp是存在的，不知它为啥提示没有文件或者目录。

我编译的是stm32f4的程序，我看它用的是g++来编译crt.cpp。编译.c文件时是没问题的，用的是arm-none-eabi-gcc，估计是没配置c++编译器吧。
我看rtconfig.py中是有配置CC，如下：
PREFIX = 'arm-none-eabi-'
CC = PREFIX + 'gcc'

我在CC那行下面配置CXX
CXX = PREFIX + 'g++'

编译的时候，依然使用g++。一脸懵，求解。

5 个回答

yqiu 2018-12-12

这家伙很懒，什么也没写！

yqiu 2018-12-12

这家伙很懒，什么也没写！

wenbodong 2018-12-13

这家伙很懒，什么也没写！

>这确实是个 bug，在 qemu-vexpress-a9 BSP 下，能够正确使用 arm-none-eabi-g++ 来编译，所以没问题。在 st ...

---

多谢，参考后如下修改即可

diff --git a/bsp/stm32f4xx-HAL/SConstruct b/bsp/stm32f4xx-HAL/SConstruct
index ea1e8bf..fd53cb3 100644
--- a/bsp/stm32f4xx-HAL/SConstruct
+++ b/bsp/stm32f4xx-HAL/SConstruct
@@ -20,6 +20,7 @@ TARGET = 'rtthread-stm32f4xx.' + rtconfig.TARGET_EXT
 env = Environment(tools = ['mingw'],
        AS = rtconfig.AS, ASFLAGS = rtconfig.AFLAGS,
        CC = rtconfig.CC, CCFLAGS = rtconfig.CFLAGS,
+       CXX  = rtconfig.CXX, CXXFLAGS = rtconfig.CXXFLAGS,
        AR = rtconfig.AR, ARFLAGS = '-rc',
        LINK = rtconfig.LINK, LINKFLAGS = rtconfig.LFLAGS)
 env.PrependENVPath('PATH', rtconfig.EXEC_PATH)

diff --git a/bsp/stm32f4xx-HAL/rtconfig.py b/bsp/stm32f4xx-HAL/rtconfig.py
index d8de63d..61ae97f 100644
--- a/bsp/stm32f4xx-HAL/rtconfig.py
+++ b/bsp/stm32f4xx-HAL/rtconfig.py
@@ -35,6 +35,7 @@ if PLATFORM == 'gcc':
     # tool-chains
     PREFIX = 'arm-none-eabi-'
     CC = PREFIX + 'gcc'
+    CXX = PREFIX + 'g++'
     AS = PREFIX + 'gcc'
     AR = PREFIX + 'ar'
     LINK = PREFIX + 'gcc'
@@ -46,7 +47,7 @@ if PLATFORM == 'gcc':
     DEVICE = ' -mcpu=cortex-m4 -mthumb -mfpu=fpv4-sp-d16 -mfloat-abi=hard -ffunction-sections -fdata-sections'
     CFLAGS = DEVICE + ' -std=c99 -Dgcc' # -D' + PART_TYPE
     AFLAGS = ' -c' + DEVICE + ' -x assembler-with-cpp -Wa,-mimplicit-it=thumb '
-    LFLAGS = DEVICE + ' -Wl,--gc-sections,-Map=rtthread-stm32.map,-cref,-u,Reset_Handler -T stm32_rom.ld'
+    LFLAGS = DEVICE + ' -nostartfiles -Wl,--gc-sections,-Map=rtthread-stm32.map,-cref,-u,Reset_Handler -T stm32_rom.ld'

CPATH = ''
     LPATH = ''
@@ -57,6 +58,8 @@ if PLATFORM == 'gcc':
     else:
         CFLAGS += ' -O2'

+    CXXFLAGS = CFLAGS + ' -Woverloaded-virtual -fno-exceptions -fno-rtti'
+
     POST_ACTION = OBJCPY + ' -O binary $TARGET rtthread.bin\n' + SIZE + ' $TARGET \n'

elif PLATFORM == 'armcc':

diff --git a/bsp/stm32f4xx-HAL/stm32_rom.ld b/bsp/stm32f4xx-HAL/stm32_rom.ld
index aa9c9b2..1303f53 100644
--- a/bsp/stm32f4xx-HAL/stm32_rom.ld
+++ b/bsp/stm32f4xx-HAL/stm32_rom.ld
@@ -60,6 +60,23 @@ SECTIONS
         _sidata = .;
     } > CODE
     __exidx_end = .;
+
+       . = ALIGN(4);
+    .ctors :
+    {
+        PROVIDE(__ctors_start__ = .);
+        KEEP(*(SORT(.ctors.*)))
+        KEEP(*(.ctors))
+        PROVIDE(__ctors_end__ = .);
+    } > CODE
+
+    .dtors :
+    {
+        PROVIDE(__dtors_start__ = .);
+        KEEP(*(SORT(.dtors.*)))
+        KEEP(*(.dtors))
+        PROVIDE(__dtors_end__ = .);
+    } > CODE

/* .data section which is used for initialized data */