Hello (I hope it is the right place to ask this question, if it isn't suggestions are appreciated)
I am trying to compile a static binary for netatalk, which uses different libs. I tried and failed, so I make a test case of what does not work - it is the 2 Makefile attached. Just type make test to create the demo and compile, make vacuum to remove them Basically, a function can be used either as a library (opposite: static) or dlopen. netatalk has various functions in many libs - refactoring all the code for a static compile doesn't seem like a good option. Figuring out how to dlopen in a static binary seems a better idea- so I did this testcase with a very simple mean() function. dlopen with a static binary seems counterintuitive- I must be missing something, but from what I read on http://www.gnu.org/software/libtool/manual/libtool.html#Dlpreopeninglibtool is the right tool for the job at hand: > "Libtool emulates -dlopen on static platforms by linking objects into > the program at compile time, and creating data structures that > represent the program's symbol table. In order to use this feature, > you must declare the objects you want your application to dlopen by > using the -dlopen or -dlpreopen flags when you link your program (see > Link mode)." In the testcase, dlopenstatic has a dependency in the lib, while the other test case do not have them - so it fails, as planned. dlopen.c:(.text+0x28): warning: Using 'dlopen' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking Yet in my try with libtool, but I can't even compile the dlopenstatic testcase : libtool --mode=link gcc -lltdl -all-static dlopen.o -o dlopenstatic -dlopen libmean.la libtool: link: cannot -dlopen a convenience library: `libmean.la' make: *** [dlopenstatic] Error 1 I have read http://www.gnu.org/s/libtool/manual/html_node/Modules-for-libltdl.html#Modules-for-libltdl but adding #define mean mean_LTX_mean in mean.c does not help. Yet in libmean.la 1st line I see : "The name that we can dlopen" What am I doing wrong? Is there a working example I could study, or could someone fix my testcase?? Thanks in advance Guylhem
Makefile
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Makefile-ltdl
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