Hi again, perhaps you can help me with this new problem i have related to the last.

I'm stuck because even if the program i wrote as an example compiles fine, the real module for my project does not and i believe it's because PERL_NO_SHORT_NAMES is not defined or respected in my project while it is in the example program.

I can make no sense at all of this because in my example program, i have Perl_doing_taint even if i remove the #define PERL_NO_SHORT_NAMES directive.

While it always uses the short names in my project, what is causing this? I've tried modifying the arguments i use to compile so many times and the way i see it the main differences are that in my project i have -lircbot which links all my modules to a library with some common functions for them to use.

Besides that i bring in the ccopts and ldopts in a configure script which strips the newline and puts it all into a variable so it looks like this: PERL_OPTS=  -Wl,-R/usr/local/lib/perl5/5.8.8/mach/CORE  -Wl,-E -L/usr/local/lib /usr/local/lib/perl5/5.8.8/mach/auto/DynaLoader/DynaLoader.a -L/usr/local/lib/perl5/5.8.8/mach/CORE -lperl -lm -lcrypt -lutil -DAPPLLIB_EXP="/usr/local/lib/perl5/5.8.8/BSDPAN" -DHAS_FPSETMASK -DHAS_FLOATINGPOINT_H -fno-strict-aliasing -pipe -Wdeclaration-after-statement -I/usr/local/include  -I/usr/local/lib/perl5/5.8.8/mach/CORE but i've also tried just using `perl -MExtUtils::Embed -e ccopts -e ldopts` directly in the Makefile rule and it didn't help.

So the way i see it, the only difference in the arguments is -Isrc -I.. -L../.. -lircbot which must be included in the arguments for my projects modules. How could this possibly cause PERL_NO_SHORT_NAMES to be ignored?! And how on earth is it defined in the example program even if i remove the preprocessing directives defining it and refuse to define it on the command line?

I even tried compiling and linking the example program with -lircbot like my projects module is, it didn't affect the fact that nm returned the symbol Perl_doing_taint still, even though i nowhere define PERL_NO_SHORT_NAMES anymore.

I must note that i can actually compile my example program module without the #define PERL_NO_SHORT_NAMES and when i check it's symbols with nm perl_test1.so | grep taint i see that it's not using short names, i see Perl_doing_taint. But when i check the symbols on my module i see doing_taint so i must assume that getting my module to respect PERL_NO_SHORT_NAMES will solve my problem because right now the program exits with this message: 

/libexec/ld-elf.so.1: modules/peval.so: Undefined symbol "doing_taint"

[download]

Things like this just boggles my mind. Here is the Makefile i use along with the primary Makefile that defines ccopts and ldopts.

Makefile: 
SHELL=/bin/sh
CC=gcc
LD=ld
LDFLAGS+=-rpath . -L.
CFLAGS+=-g -Wall -pedantic -ansi -DSETPROCTITLE -DPERL_NO_SHORT_NAMES
LIBS+=-lircbot
INCLUDES+=-Isrc -I..
HEADERS=bicebot.h ircbot.h

PERL_OPTS=  -Wl,-R/usr/local/lib/perl5/5.8.8/mach/CORE  -Wl,-E -L/usr/
+local/lib /usr/local/lib/perl5/5.8.8/mach/auto/DynaLoader/DynaLoader.
+a -L/usr/local/lib/perl5/5.8.8/mach/CORE -lperl -lm -lcrypt -lutil -D
+APPLLIB_EXP="/usr/local/lib/perl5/5.8.8/BSDPAN" -DHAS_FPSETMASK -DHAS
+_FLOATINGPOINT_H -fno-strict-aliasing -pipe -Wdeclaration-after-state
+ment -I/usr/local/include  -I/usr/local/lib/perl5/5.8.8/mach/CORE

SRC=src
SRC_MODS:=$(SRC)/mods

# TODO: some sort of PREFIX to install elsewhere
# also install target
MODULES=modules

export

all:
    $(MAKE) -f $(SRC)/Makefile
    $(MAKE) -C $(SRC_MODS)
    @echo 'All done, now run bicebot.' 

modules:
    $(MAKE) -C $(SRC_MODS)

# TODO: so you can rebuild only modules
clean-modules:
    rm -f $(MODULES)/*.so $(SRC_MODS)/*.o

clean:
    rm -f *.o bicebot *.so $(MODULES)/*.so $(SRC_MODS)/*.o

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src/mods/Makefile 
MODS_SRCS=$(wildcard *.c)
MODS_OBJS=$(MODS_SRCS:%.c=%.o)
MODS_TRGT=$(MODS_OBJS:%.o=%.so)
LDFLAGS+=-L../..

all: $(MODS_TRGT)

#gcc -Wall -fPIC -shared -o perl_test1.so perl_test1.c `perl -MExtUtil
+s::Embed -e ccopts -e ldopts` 
$(MODS_TRGT): $(MODS_SRCS)
    $(CC) -Wall -Isrc -I.. -rpath . -L. -L../.. -fPIC -shared -o ../..
+/$(MODULES)/$@ $(@:%.so=%.c) `perl -MExtUtils::Embed -e ccopts -e ldo
+pts` -lircbot -lc

[download]
I've been trying and testing tons of different methods in the last Makefile so excuse the mess but maybe you can figure out why it acts like this if i show you how i compile and link the module.

In reply to Re^2: Problem with dlopen and shared objects using perl libs by swehack
in thread Problem with dlopen and shared objects using perl libs by swehack

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