解决“C compiler cannot create executables”的错误
感觉不错的解决方法，还没有尝试过，先转载下来了。
解决“C compiler cannot create executables”的错误
Posted on 2006-09-25 by hilyjiang
作者：Hily 原始链接：http://hily.me/blog/2006/09/minigui-compile-error/
版权声明：可以转载，转载时务必以超链接形式标明文章原始出处和作者信息及版权声明
miniGUI 1.3.3中“Development environment options”的配置如下：
│ │ (uClinux) Platform │ │
│ │ (arm-elf-gcc) Compiler │ │
│ │ (uClibc) Libc │ │
│ │ --- Compilation and installation options │ │
│ │ uClinux dist directory: "/opt/uClinux/uClinux-dist" │ │
│ │ [ ] Choose different uClibc directory │ │
│ │ --- Installation options │ │
│ │ Path prefix: "/usr/local" │ │
│ │ --- Additonal Compiler Flags │ │
│ │ CFLAGS: "" │ │
│ │ LDFLAGS: "" │ │
配置完后，保存配置时出错：
Saving your MiniGUI configuration...
install prefix = /usr/local
compiler = arm-elf-gcc
target = arm-elf-linux
host = arm-elf-linux
CFLAGS = -Os -D__uClinux__ -fno-builtin -I/home/work1/uClinux-dist-server/linux-2.4.x/include -I/home/work1/uClinux-dist-server/lib/uClibc/include -I/home/work1/uClinux-dist-server/lib/uClibc/include/../ -D__PIC__ -fpic -msingle-pic-base
LDFLAGS = -Wl,-elf2flt -Wl,-move-rodata -L/home/work1/uClinux-dist-server/lib/uClibc/lib -L/home/work1/uClinux-dist-server/lib/uClibc/lib/../ -lc
checking build system type... i386-pc-linux-gnu
checking host system type... arm-elf-linux-gnu
checking target system type... arm-elf-linux-gnu
checking for arm-elf-linux-gcc... arm-elf-gcc
checking for C compiler default output... configure: error: C compiler cannot create executables
See `config.log' for more details.
*** End of MiniGUI configuration.
*** Next, you must run 'make'.
花了大半天查错，终于找到答案。
查看config.log出错的地方为：
95 configure:2069: checking for C compiler default output
96 configure:2072: arm-elf-gcc conftest.c >&5
97 /usr/local/lib/gcc-lib/arm-elf/2.95.3/libgcc.a(__main.o)(.text+0xc4): In function `__do_global_ctors':
98 : undefined reference to `__CTOR_LIST__'
99 /usr/local/lib/gcc-lib/arm-elf/2.95.3/libgcc.a(__main.o)(.data+0x0): undefined reference to `__DTOR_LIST__'
100 collect2: ld returned 1 exit status
101 configure:2075: $? = 1
看到96行arm-elf-gcc的编译选项居然为空，不解。。
查看configure中2072行附近：
echo "$as_me:$LINENO: checking for C compiler default output" >&5
echo $ECHO_N "checking for C compiler default output... $ECHO_C" >&6
ac_link_default=`echo "$ac_link" | sed 's/ -o *conftest[^ ]*//'`
if { (eval echo "$as_me:$LINENO: \"$ac_link_default\"") >&5
(eval $ac_link_default) 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; then
其中ac_link在1716行定义：
ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
奇怪的是CFLAGS居然是空的，在保留配置时明明看到有给CFLAGS赋值：
CFLAGS = -Os -D__uClinux__ -fno-builtin -I/home/work1/uClinux-dist-server/linux-2.4.x/include -I/home/work1/uClinux-dist-server/lib/uClibc/include -I/home/work1/uClinux-dist-server/lib/uClibc/include/../ -D__PIC__ -fpic -msingle-pic-base
看看到底是怎么保存的，scripts/Menuconfig中：
1412 #
1413 # Confirm and Save
1414 #
1415 if $DIALOG --backtitle "$backtitle" \
1416 --yesno "Do you wish to save your new MiniGUI configuration?" 5 60
1417 then
1418 save_configuration
1419 scripts/mkconfig
1420 ./config-mnu
1421 #rm config-mnu
保存时运行了scripts/mkconfig和./config-mnu，config-mnu是在mkconfig中生成的。而. /configure是在config-mnu中运行的，但是在config-mnu中却没有CFLAGS的设置。检查config-mnu，当我看到这几行时，我真的又想杀人了：
189 echo "CC=$CC \\" >> $CONFIG_MNU
190 #echo "CFLAGS=\"$CFLAGS\" \\" >> $CONFIG_MNU
191 #echo "LDFLAGS=\"$LDFLAGS\" \\" >> $CONFIG_MNU
192 echo "./configure \\" >> $CONFIG_MNU
好好的，谁把它们注释掉了！
把注释的那两行恢复一下就通过了。
– EOF –
This entry was posted in 嵌入式. Bookmark the permalink.
解决“C compiler cannot create executables”的错误
Posted on 2006-09-25 by hilyjiang
作者：Hily 原始链接：http://hily.me/blog/2006/09/minigui-compile-error/
版权声明：可以转载，转载时务必以超链接形式标明文章原始出处和作者信息及版权声明
miniGUI 1.3.3中“Development environment options”的配置如下：
│ │ (uClinux) Platform │ │
│ │ (arm-elf-gcc) Compiler │ │
│ │ (uClibc) Libc │ │
│ │ --- Compilation and installation options │ │
│ │ uClinux dist directory: "/opt/uClinux/uClinux-dist" │ │
│ │ [ ] Choose different uClibc directory │ │
│ │ --- Installation options │ │
│ │ Path prefix: "/usr/local" │ │
│ │ --- Additonal Compiler Flags │ │
│ │ CFLAGS: "" │ │
│ │ LDFLAGS: "" │ │
配置完后，保存配置时出错：
Saving your MiniGUI configuration...
install prefix = /usr/local
compiler = arm-elf-gcc
target = arm-elf-linux
host = arm-elf-linux
CFLAGS = -Os -D__uClinux__ -fno-builtin -I/home/work1/uClinux-dist-server/linux-2.4.x/include -I/home/work1/uClinux-dist-server/lib/uClibc/include -I/home/work1/uClinux-dist-server/lib/uClibc/include/../ -D__PIC__ -fpic -msingle-pic-base
LDFLAGS = -Wl,-elf2flt -Wl,-move-rodata -L/home/work1/uClinux-dist-server/lib/uClibc/lib -L/home/work1/uClinux-dist-server/lib/uClibc/lib/../ -lc
checking build system type... i386-pc-linux-gnu
checking host system type... arm-elf-linux-gnu
checking target system type... arm-elf-linux-gnu
checking for arm-elf-linux-gcc... arm-elf-gcc
checking for C compiler default output... configure: error: C compiler cannot create executables
See `config.log' for more details.
*** End of MiniGUI configuration.
*** Next, you must run 'make'.
花了大半天查错，终于找到答案。
查看config.log出错的地方为：
95 configure:2069: checking for C compiler default output
96 configure:2072: arm-elf-gcc conftest.c >&5
97 /usr/local/lib/gcc-lib/arm-elf/2.95.3/libgcc.a(__main.o)(.text+0xc4): In function `__do_global_ctors':
98 : undefined reference to `__CTOR_LIST__'
99 /usr/local/lib/gcc-lib/arm-elf/2.95.3/libgcc.a(__main.o)(.data+0x0): undefined reference to `__DTOR_LIST__'
100 collect2: ld returned 1 exit status
101 configure:2075: $? = 1
看到96行arm-elf-gcc的编译选项居然为空，不解。。
查看configure中2072行附近：
echo "$as_me:$LINENO: checking for C compiler default output" >&5
echo $ECHO_N "checking for C compiler default output... $ECHO_C" >&6
ac_link_default=`echo "$ac_link" | sed 's/ -o *conftest[^ ]*//'`
if { (eval echo "$as_me:$LINENO: \"$ac_link_default\"") >&5
(eval $ac_link_default) 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; then
其中ac_link在1716行定义：
ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
奇怪的是CFLAGS居然是空的，在保留配置时明明看到有给CFLAGS赋值：
CFLAGS = -Os -D__uClinux__ -fno-builtin -I/home/work1/uClinux-dist-server/linux-2.4.x/include -I/home/work1/uClinux-dist-server/lib/uClibc/include -I/home/work1/uClinux-dist-server/lib/uClibc/include/../ -D__PIC__ -fpic -msingle-pic-base
看看到底是怎么保存的，scripts/Menuconfig中：
1412 #
1413 # Confirm and Save
1414 #
1415 if $DIALOG --backtitle "$backtitle" \
1416 --yesno "Do you wish to save your new MiniGUI configuration?" 5 60
1417 then
1418 save_configuration
1419 scripts/mkconfig
1420 ./config-mnu
1421 #rm config-mnu
保存时运行了scripts/mkconfig和./config-mnu，config-mnu是在mkconfig中生成的。而. /configure是在config-mnu中运行的，但是在config-mnu中却没有CFLAGS的设置。检查config-mnu，当我看到这几行时，我真的又想杀人了：
189 echo "CC=$CC \\" >> $CONFIG_MNU
190 #echo "CFLAGS=\"$CFLAGS\" \\" >> $CONFIG_MNU
191 #echo "LDFLAGS=\"$LDFLAGS\" \\" >> $CONFIG_MNU
192 echo "./configure \\" >> $CONFIG_MNU
好好的，谁把它们注释掉了！
把注释的那两行恢复一下就通过了。
– EOF –
This entry was posted in 嵌入式. Bookmark the permalink.