CentOS6.6升级Gcc4.9.2相关问题及解决办法

问题一、

./configure

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checking for objdir... .libs

configure: WARNING: using in-tree ISL, disabling version check

configure: WARNING: using in-tree CLooG, disabling version check

*** This configuration is not supported in the following subdirectories:

gnattools target-libada target-libgfortran target-libgo target-libffi target-libbacktrace target-zlib target-libjava target-libobjc target-boehm-gc

(Any other directories should still work fine.)

checking for default BUILD_CONFIG... bootstrap-debug

make

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checking dependency style of g++... none

configure: error: no usable dependency style found

make[2]: *** [configure-stage1-gcc] Error 1

make[2]: Leaving directory `/home/ouyang/Downloads/files/gcc-4.9.2/gcc-build-4.9.2'

make[1]: *** [stage1-bubble] Error 2

make[1]: Leaving directory `/home/ouyang/Downloads/files/gcc-4.9.2/gcc-build-4.9.2'

make: *** [all] Error 2

解决办法

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yum install gcc-c++