Originally posted by: kahn

We tried to install Apache application on Aix 7.1. The installation of prerequisite and software of Apache were done without any issue but when we test to start the Apache application, we got the error as below:

> ./apachectl

exec(): 0509-036 Cannot load program /patches3/PATCHES/Apache_2.4/bin/httpd because of the following errors:

rtld: 0712-001 Symbol iconv_close was referenced

      from module /patches3/PATCHES/Apache_2.4/lib/libaprutil-1.so(), but a runtime definition of the symbol was not found.

rtld: 0712-001 Symbol iconv was referenced

      from module /patches3/PATCHES/Apache_2.4/lib/libaprutil-1.so(), but a runtime definition of the symbol was not found.

rtld: 0712-001 Symbol iconv_open was referenced

      from module /patches3/PATCHES/Apache_2.4/lib/libaprutil-1.so(), but a runtime definition of the symbol was not found.

I checked the LIBPATH and found as below:

> echo $LIBPATH

/patches3/PATCHES/Apache_2.4/lib:/usr/lib:/lib:/opt/freeware/lib:/opt/freeware/lib64:/unix:.

Originally posted by: sangameshm

Latest available httpd AIX Toolbox is httpd-2.4.39-2.
And it provides both has 32bit and 64bit support version.
To start 64bit httpd, one needs to use /opt/freeware/sbin/apachectl_64 start.
To start 32bit httpd, one needs to use /opt/freeware/sbin/apachectl start.

How the apache present in  /patches3/PATCHES/Apache_2.4/ is installed ? and all the dependencies are downloaded from AIX Toolbox ?

Thanks,

Sangamesh

Originally posted by: kahn

  sangameshm Thanks for reply. While installing we used prefix path to ' /patches3/PATCHES/Apache_2.4/  ' and all dependencies were downloaded & installed from AIX toolbox. Then only make /make install worked.

Originally posted by: sangameshm

Provide the output of "dump -Hov /patches3/PATCHES/Apache_2.4/lib/libaprutil-1.so" and

dump -Tov /patches3/PATCHES/Apache_2.4/lib/libaprutil-1.so | egrep "iconv_open|iconv_close"

Thanks,

Sangamesh

Originally posted by: kahn

root@erpdev:/> # dump -Hov /patches3/PATCHES/Apache_2.4/lib/libaprutil-1.so

/patches3/PATCHES/Apache_2.4/lib/libaprutil-1.so:

                        ***Object Module Header***
# Sections      Symbol Ptr      # Symbols       Opt Hdr Len     Flags
         5      0x000719fe          16839                72     0x3002
Flags=( EXEC DYNLOAD SHROBJ DEP_SYSTEM )
Timestamp = "Aug 29 14:21:23 2019"
Magic = 0x1df  (32-bit XCOFF)

                        ***Optional Header***
Tsize       Dsize       Bsize       Tstart      Dstart
0x0003b278  0x000070e8  0x00000014  0x10000150  0x200003c8

SNloader    SNentry     SNtext      SNtoc       SNdata
0x0004      0x0000      0x0001      0x0002      0x0002

TXTalign    DATAalign   TOC         vstamp      entry
0x0007      0x0003      0x20006c94  0x0001      0xffffffff

maxSTACK    maxDATA     SNbss       magic       modtype
0x00000000  0x00000000  0x0003      0x010b        RE

                        ***Loader Section***
                      Loader Header Information
VERSION#         #SYMtableENT     #RELOCent        LENidSTR
0x00000001       0x000001d6       0x0000055b       0x000000b7

#IMPfilID        OFFidSTR         LENstrTBL        OFFstrTBL
0x00000005       0x00006c74       0x00002515       0x00006d2b

                        ***Import File Strings***
INDEX  PATH                          BASE                MEMBER
0      /opt/freeware/lib:/patches3/PATCHES/Apache_2.4//lib:/opt/IBM/xlmass/8.1.3/lib/aix61:/opt/IBM/xlc/13                                                            .1.3/lib:/usr/lib:/lib
1                                    libexpat.a          libexpat.so.1
2                                    libapr-1.so
3                                    libc.a              shr.o
4                                    ..
root@erpdev:/> # dump -Tov /patches3/PATCHES/Apache_2.4/lib/libaprutil-1.so | egrep "iconv_open|iconv_close"
[467]   0x00000000    undef      IMP     DS EXTref              .. iconv_close
[469]   0x00000000    undef      IMP     DS EXTref              .. iconv_open
 

Originally posted by: AyappanP

It's not linked properly against libiconv.a. I think you need to built it properly. 

The linking flag "-brtl" can be used only if it is required otherwise it will ignore undefined symbols and gives these kind of issues. 

Originally posted by: kahn

Originally posted by: AyappanP

Please check our httpd spec file. Look for the CFLAGS and LDFLAGS

http://public.dhe.ibm.com/aix/freeSoftware/aixtoolbox/SPECS/httpd-2.4.39-2.spec

Originally posted by: kahn

Which one we  need to update and to what value. Please suggest below are the current Flag values 
oradisc@erpdev:/patches3/PATCHES/Apache_2.4/bin >
> grep LDFLAGS *
apr-1-config:LDFLAGS="-Wl,-brtl"
apr-1-config:    flags="$flags $LDFLAGS"
apu-1-config:LDFLAGS="-L/patches3/PATCHES/Apache_2.4/expat/expat-2.2.7/lib/lib"
apu-1-config:    flags="$flags $LDFLAGS"
apxs:my $CFG_LDFLAGS    = join ' ', map { get_vars($_) }
apxs:  qw(LDFLAGS NOTEST_LDFLAGS SH_LDFLAGS);
apxs:    qw(TARGET CC CFLAGS CFLAGS_SHLIB LD_SHLIB LDFLAGS_SHLIB LIBS_SHLIB
apxs:    my $ldflags = "$CFG_LDFLAGS";
oradisc@erpdev:/patches3/PATCHES/Apache_2.4/bin >
> grep CFLAGS  *
apr-1-config:CFLAGS="-g -qHALT=E"
apr-1-config:    flags="$flags $CFLAGS"
apxs:my $CFG_CFLAGS     = join ' ', map { get_vars($_) }
apxs:  qw(SHLTCFLAGS CFLAGS NOTEST_CPPFLAGS EXTRA_CPPFLAGS EXTRA_CFLAGS);
apxs:    qw(TARGET CC CFLAGS CFLAGS_SHLIB LD_SHLIB LDFLAGS_SHLIB LIBS_SHLIB
apxs:    my $cflags = "$CFG_CFLAGS";
oradisc@erpdev:/patches3/PATCHES/Apache_2.4/bin >
>