[Cmake] command to build dynamic lib changed causing my VXL build to brea k

[Wheeler, Fred (CRD)]

I just solved a strange build problem for myself that is somehow related to VXL, CMake and my
particular environment.  I don't know if there is any particular change that should be made to VXL or
CMake, but this took me so long to track down I thought I should briefly report it.
 
Sometime over the past week or two CMake started producing makefiles that use the "-shared -nostdlib"
options instead of "-Wl,-G" to link objects into a shared library (*.so).  With this change all of
VXL still builds for me, but just about all executables produced in the VXL tree stop with a Bus
Error immediately after starting.  Everything build fine, but nothing runs.  Strange.
 
I'm using Solaris 2.7.  I saw this problem on both gcc-3.0.3 and gcc-3.0.2.  I isolated the problem
(to some extent) by first backing off the compiler version, which I changed recently, then backing
off the VXL source tree about a month, and then backing off the CMake source tree about a month (a
desperate guess that I really didn't think would have any effect, but it did).
 
I added these lines to my CMakeCache...
CMAKE_MODULE_BUILD_FLAGS:STRING=-Wl,-G
CMAKE_SHLIB_BUILD_FLAGS:STRING=-Wl,-G
 
Fred Wheeler

--
Fred Wheeler, GE CRD, KWC-303
Phone: 518-387-7225 (GE Internal Dialcom: 8*833-7225)
Fax:   518-387-4042 (GE Internal Dialcom: 8*833-4042)


 
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