On 1/17/19 8:25 PM, Michael Wojcik wrote:
From: openssl-users [mailto:openssl-users-bounces@xxxxxxxxxxx] On Behalf Of
Dennis Clarke
Sent: Thursday, January 17, 2019 18:23
"crypto/objects/o_names.c", line 114: error: undefined symbol: strcasecmp
"crypto/objects/o_names.c", line 114: warning: improper pointer/integer
combination: op "="
"crypto/objects/o_names.c", line 151: warning: implicit function
declaration: strcasecmp
Note the issue here is an undefined symbol, which consequently has an implicit definition as an int with external linkage and static duration. So we're talking about a header problem, not a library problem.
So would love to hear someones thoughts on why strcasecmp suddenly went
missing?
Well...
strcasecmp is a heresy.
Love it.
I knew something like this was in the air and I could smell it :-)
<snip>
But of course the declaration of strcasecmp in strings.h is itself ifdeffed.
To get it, _XPG4_2 must be defined, and __EXTENSIONS__ must NOT be defined.
Full moon black cat ifdeffery crud here we go.
My guess is you're falling foul of one of those two conditions, when you compile in strict mode.
The simplest fix would be to whack a declaration of strcasecmp into the source file itself
Yeah .. that's icky.
but that's inelegant and hard to maintain - presumably you'd rather do something through the OpenSSL configure process. As for that, well... the only thing that comes to mind is something like:
1. Add -Dstrcasecmp=cmpstrci to the compiler flags
2. Add -lcmpstrci to the link flags
3. Create a little libcmpstrci.a (no need for it to be a shared object) with a case-insensitive string comparison function named cmpstrci. It can use strcasecmp if it must, or you can implement your own.
Or the problem might be something else, of course, but the fact that strings.h does appear in the output but strcasecmp isn't declared does suggest the conditional-compilation in strings.h is to blame.
Thank you for the great reply where clearly you have seen ifdeffery
nonsense bite you. I get caught between a rock and a hrd place here
every time because if I try to go with just ordinary cc and just some
transition loosey goosey not-really-compliant or strict CFLAGS then I
arrive in a different ugly place :
${LDCMD:-/opt/developerstudio12.6/bin/cc} -m64 -xarch=sparc -g -Xa
-errfmt=error -erroff=%none -errshort=full -xstrconst -xildoff
-xmemalign=8s -xnolibmil -xcode=pic32 -xregs=no%appl -xlibmieee -mc
-ftrap=%none -xbuiltin=%none -xunroll=1 -xstrconst -Xa -m64 -xarch=sparc
-g -Xa -errfmt=error -erroff=%none -errshort=full -xstrconst -xildoff
-xmemalign=8s -xnolibmil -xcode=pic32 -xregs=no%appl -xlibmieee -mc
-ftrap=%none -xbuiltin=%none -xunroll=1 -L. -mt \
-o test/rsa_complex test/rsa_complex.o \
-lsocket -lnsl -ldl -lrt -lpthread
Undefined first referenced
symbol in file
OPENSSL_sk_pop_free test/rsa_complex.o
OPENSSL_sk_dup test/rsa_complex.o
OPENSSL_sk_pop test/rsa_complex.o
OPENSSL_sk_num test/rsa_complex.o
OPENSSL_sk_new test/rsa_complex.o
OPENSSL_sk_set test/rsa_complex.o
OPENSSL_sk_free test/rsa_complex.o
OPENSSL_sk_find test/rsa_complex.o
OPENSSL_sk_push test/rsa_complex.o
OPENSSL_sk_sort test/rsa_complex.o
OPENSSL_sk_zero test/rsa_complex.o
OPENSSL_sk_is_sorted test/rsa_complex.o
OPENSSL_sk_shift test/rsa_complex.o
OPENSSL_sk_value test/rsa_complex.o
OPENSSL_sk_delete_ptr test/rsa_complex.o
OPENSSL_sk_unshift test/rsa_complex.o
OPENSSL_sk_new_null test/rsa_complex.o
OPENSSL_sk_set_cmp_func test/rsa_complex.o
OPENSSL_sk_reserve test/rsa_complex.o
OPENSSL_sk_new_reserve test/rsa_complex.o
OPENSSL_sk_delete test/rsa_complex.o
OPENSSL_sk_insert test/rsa_complex.o
OPENSSL_sk_deep_copy test/rsa_complex.o
OPENSSL_sk_find_ex test/rsa_complex.o
ld: fatal: symbol referencing errors. No output written to test/rsa_complex
gmake[1]: *** [Makefile:3561: test/rsa_complex] Error 2
gmake[1]: Leaving directory
'/usr/local/build/openssl-1.1.1a_SunOS5.10_sparc64vii+.004'
gmake: *** [Makefile:169: all] Error 2
Looks like getting a debug non-optimized library will be a major pain.
Dennis
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