奇怪编译问题 FLOAT_REGS

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奇怪编译问题 FLOAT_REGS

C:/pkg69ppc/target/libmcosql/sql.cpp:1682:error: unable to find a register to spill in class 'FLOAT_REGS'

C:/pkg69ppc/target/libmcosql/sql.cpp:1682:error: this is the insn:

(insn:HI 58 57 60 5C:/pkg69ppc/target/libmcosql/sql.cpp:1477 (set (reg/v:DI 149 [ start ])

(reg:DI 3 3)) 350 {*movdi_internal32} (expr_list:REG_DEAD (reg:DI 3 3)

(insn_list:REG_RETVAL 54 (nil))))

C:/pkg69ppc/target/libmcosql/sql.cpp:1682:confused by earlier errors, bailing out

E:\WindRiver\utilities-1.0\x86-win32\bin\make.exe:*** [libmcosql/NonDebug/Objects/libmcosql/sql.o] Error 1

soluation:

下文给出了解决方案：

http://www0.cs.ucl.ac.uk/staff/ucacbbl/opencv-2.4.3/

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This bug has been reported in stackoverflow.com.
Being unable to find a register to spillappears to be a problem with some versions of gcc(bugzilla 35135).

http://stackoverflow.com/questions/13580485/error-in-making-opencv

的说明：

YOUR_BUILD_DIR/modules/features2d/CMakeFiles/opencv_features2d.dir/build.make

Search for freak.cpp. You find three blocks: Building CXX..., Preprocessing CXX..., and Compiling CX.... I just needed to change the Building part. The last line of that block looks like this:

.... YOUR_COMPILER $(CXX_DEFINES) $(CXX_FLAGS) ...

and if you check you find out that CXX_FLAGS has a -O3 in it. If you add -O0 after CXX_FLAGS it suppresses the O3. So your lines should look like this.

.... YOUR_COMPILER $(CXX_DEFINES) $(CXX_FLAGS) -O0 ...

http://m.blog.csdn.net/blog/deltatang/8989908

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