Hi, Rainer:
I checked the 32/64 Bit issue on PCRE first. I found 
/usr/local/apache2/pcre/lib/libpcre.a:  current ar archive, 32-bit symbol table
/usr/local/apache2/pcre/lib/libpcreposix.a:     current ar archive, 32-bit 
symbol table
/usr/local/apache2/pcre/lib/libpcre.so: ELF 64-bit MSB dynamic lib SPARCV9 
Version 1, dynamically linked, not stripped
/usr/local/apache2/pcre/lib/libpcreposix.so:    ELF 64-bit MSB dynamic lib 
SPARCV9 Version 1, dynamically linked, not stripped

I guess the .so files are ok. But the two  .a files are 32-bit ones. Are they 
OK?  I used the following commands I thought they should be 64 bit version.

# cd /usr/local/apache2/install/pcre-8.38
# export CC="gcc -m64"
# ./configure --prefix=/usr/local/apache2/pcre --disable-cpp
# make clean
# make
# make install

Jin

-----Original Message-----
From: Huang, Jinhui (OST) 
Sent: Monday, May 02, 2016 12:32 PM
To: users@httpd.apache.org
Cc: Huang, Jinhui (OST)
Subject: RE: [users@httpd] Install Apache 2.4.20 on Solaris 10 --- Error "ld: 
fatal: file ab.o: wrong ELF class: ELFCLASS32"

Thank you, Rainer. I will check that and try again.
Jin

-----Original Message-----
From: Rainer Jung [mailto:rainer.j...@kippdata.de]
Sent: Monday, May 02, 2016 12:27 PM
To: users@httpd.apache.org
Cc: Huang, Jinhui (OST)
Subject: Re: [users@httpd] Install Apache 2.4.20 on Solaris 10 --- Error "ld: 
fatal: file ab.o: wrong ELF class: ELFCLASS32"

Am 02.05.2016 um 15:36 schrieb Huang, Jinhui (OST):
> Hi, Rainer:
>
> I searched online to find the OpenSSL version supported by Apache 2.4.20. It 
> should be openssl-1.0.2g. I installed this version and then tried to install 
> Apache again. It failed with same error message.
>
> Searching the error (ld: fatal: relocations remain against allocatable but 
> non-writable sections) again, I am now trying to compile the apache source 
> with "-fPIC" option. Hoping this will make a difference.
>       export CC="gcc -m64 -fPIC"
>
> Do I need to recompile/build the PCRE and OpenSSL using the same gcc option?

You must compile PCRE and OpenSSL as 64 Bit versions. You can check using the 
output of the "file" command on the PCRE resp. OpenSSL library files. For 
OpenSSL you might need to use an appropriate Configure command argument instead 
of CC.

The below error message sounds as you didn't build the shared libraries for 
OpenSSL (*.so) and instead only the static ones (*.a). It should be easier to 
work with the shared ones (argument "shared" to Configure).

If you succeed in building 64 bit libraries and the shared ones are present, 
and then you still get "ld: fatal: relocations remain against allocatable but 
non-writable sections", you might succeed in setting

MOD_SSL_LDADD=-Wl,-Bsymbolic
export MOD_SSL_LDADD

Regards,

Rainr

> -----Original Message-----
> From: Huang, Jinhui (OST)
> Sent: Friday, April 29, 2016 11:18 AM
> To: Rainer Jung; users@httpd.apache.org
> Cc: Huang, Jinhui (OST)
> Subject: RE: [users@httpd] Install Apache 2.4.20 on Solaris 10 --- Error "ld: 
> fatal: file ab.o: wrong ELF class: ELFCLASS32"
>
> The error seems related to my OpenSSL.  On this server, I have two versions 
> of OpenSSL. I am trying to use the one at /usr/local/ssl/ (OpenSSL 1.0.1s ).
> Is this version supported for Apache 2.4.20?
>
> ==================================================
> # which openssl
> /usr/sfw/bin/openssl
>
> # openssl version
> OpenSSL 0.9.7d 17 Mar 2004 (+ security fixes for: CVE-2005-2969
> CVE-2006-2937 CVE-2006-2940 CVE-2006-3738 CVE-2006-4339 CVE-2006-4343
> CVE-2006-7250 CVE-2007-5135 CVE-2007-3108 CVE-2008-5077 CVE-2008-7270
> CVE-2009-0590 CVE-2009-2409 CVE-2009-3555 CVE-2010-4180 CVE-2011-4576
> CVE-2011-4619 CVE-2012-0884 CVE-2012-1165 CVE-2012-2110 CVE-2012-2131
> CVE-2012-2333 CVE-2013-0166 CVE-2013-0169 CVE-2014-0224 CVE-2014-3508
> CVE-2014-3511 CVE-2014-3566 CVE-2014-3567 CVE-2014-3568 CVE-2014-3569
> CVE-2014-3570 CVE-2014-8275 CVE-2015-0204 CVE-2015-0286 CVE-2015-0287
> CVE-2015-0288 CVE-2015-0289 CVE-2015-0292 CVE-2015-0293 CVE-2015-1789
> CVE-2015-1790 CVE-2015-4000)
>
> # /usr/local/ssl/bin/openssl version
> OpenSSL 1.0.1s  1 Mar 2016
> ==================================================
>
>
> -----Original Message-----
> From: Huang, Jinhui (OST)
> Sent: Friday, April 29, 2016 10:20 AM
> To: Rainer Jung; users@httpd.apache.org
> Cc: Huang, Jinhui (OST)
> Subject: RE: [users@httpd] Install Apache 2.4.20 on Solaris 10 --- Error "ld: 
> fatal: file ab.o: wrong ELF class: ELFCLASS32"
>
> Hi, Rainer:
>
> The following is the new error I received when I try to install Apache 2.4.20 
> again, using new PCRE 8.38. I have added a shortened screen capture 
> (zptpt-20160428e-short.txt) as attachment. The original file is about 4.4 MB. 
> In this short version, 45650 lines of make output have been deleted. Please 
> let me know if you need the completed output.
>
> =======================================
> # pwd
> /usr/local/apache2/install/httpd-2.4.20
>
> # env
> CC=gcc -m64
> HOME=/
> HZ=
> LOGNAME=root
> MAIL=/var/mail/root
> PATH=/bin:/usr/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/local/sbin:/usr
> /xpg4/bin:/usr/ccs/bin:/usr/ucb:/usr/dt/bin:/usr/openwin/bin:/usr/loca
> l/bin:/usr/local/sbin:/usr/platform/sun4u/sbin:/opt/VRTS/bin:/opt/VRTS
> ob/bin:/etc/vx/bin:/usr/lib/vxvm/bin:/usr/sfw/bin:/var/tmp/tomcat/apac
> he-ant-1.6.5/bin:/usr/local/apache2/bin:/usr/lib
> PWD=/usr/local/apache2/install/pcre-8.38
> SHELL=/sbin/sh
> TERM=xterm
> TZ=US/Eastern
> _=/bin/script
>
> # ./configure \
> --prefix=/usr/local/apache2/httpd-2.4.20 \
> --with-port=80 \
> --with-mpm=worker \
> --enable-mods-shared=most \
> --enable-ssl \
> --with-ssl=/usr/local/ssl \
> --enable-proxy \
> --disable-example \
> --with-included-apr \
> --with-pcre=/usr/local/apache2/pcre
> ......
>
> # make clean
> .......
>
> # make
> ...
> /usr/local/apache2/install/httpd-2.4.20/srclib/apr/libtool --silent 
> --mode=compile gcc -m64 -std=gnu99 -I/usr/local/ssl/include -g -O2      
> -DSOLARIS2=10 -D_POSIX_PTHREAD_SEMANTICS -D_REENTRANT     -I. 
> -I/usr/local/apache2/install/httpd-2.4.20/os/unix 
> -I/usr/local/apache2/install/httpd-2.4.20/include 
> -I/usr/local/apache2/install/httpd-2.4.20/srclib/apr/include 
> -I/usr/local/apache2/install/httpd-2.4.20/srclib/apr-util/include 
> -I/usr/local/apache2/pcre/include 
> -I/usr/local/apache2/install/httpd-2.4.20/modules/aaa 
> -I/usr/local/apache2/install/httpd-2.4.20/modules/cache 
> -I/usr/local/apache2/install/httpd-2.4.20/modules/core 
> -I/usr/local/apache2/install/httpd-2.4.20/modules/database 
> -I/usr/local/apache2/install/httpd-2.4.20/modules/filters 
> -I/usr/local/apache2/install/httpd-2.4.20/modules/ldap 
> -I/usr/local/apache2/install/httpd-2.4.20/modules/loggers 
> -I/usr/local/apache2/install/httpd-2.4.20/modules/lua 
> -I/usr/local/apache2/install/httpd-2.4.20/modules/proxy -I/usr/local/apache!
 2/instal
l/httpd-2.4.20/modules/session 
-I/usr/local/apache2/install/httpd-2.4.20/modules/ssl 
-I/usr/local/apache2/install/httpd-2.4.20/modules/test 
-I/usr/local/apache2/install/httpd-2.4.20/server 
-I/usr/local/apache2/install/httpd-2.4.20/modules/arch/unix 
-I/usr/local/apache2/install/httpd-2.4.20/modules/dav/main 
-I/usr/local/apache2/install/httpd-2.4.20/modules/generators 
-I/usr/local/apache2/install/httpd-2.4.20/modules/mappers -prefer-pic -c 
ssl_util_ocsp.c && touch ssl_util_ocsp.slo
> /usr/local/apache2/install/httpd-2.4.20/srclib/apr/libtool --silent 
> --mode=link gcc -m64 -std=gnu99 -I/usr/local/ssl/include -g -O2    
> -L/usr/local/ssl/lib   -lssl -lcrypto -luuid -lsendfile -lrt -lsocket -lnsl 
> -lpthread       -o mod_ssl.la -rpath /usr/local/apache2/httpd-2.4.20/modules 
> -module -avoid-version  mod_ssl.lo ssl_engine_config.lo ssl_engine_init.lo 
> ssl_engine_io.lo ssl_engine_kernel.lo ssl_engine_log.lo ssl_engine_mutex.lo 
> ssl_engine_pphrase.lo ssl_engine_rand.lo ssl_engine_vars.lo ssl_scache.lo 
> ssl_util_stapling.lo ssl_util.lo ssl_util_ssl.lo ssl_engine_ocsp.lo 
> ssl_util_ocsp.lo  -export-symbols-regex ssl_module
> Text relocation remains                         referenced
>      against symbol                  offset      in file
> .text (section)                     0xb88       
> /usr/local/ssl/lib/libssl.a(s3_lib.o)
> .text (section)                     0xb90       
> /usr/local/ssl/lib/libssl.a(s3_lib.o)
> .text (section)                     0xb98       
> /usr/local/ssl/lib/libssl.a(s3_lib.o)
> .text (section)                     0xba0       
> /usr/local/ssl/lib/libssl.a(s3_lib.o)
> ...
> ...
> oupper                             0x5f8       
> /usr/local/ssl/lib/libcrypto.a(gost_pmeth.o)
> gmtime_r                            0x8         
> /usr/local/ssl/lib/libcrypto.a(o_time.o)
> gethrtime                           0xa8        
> /usr/local/ssl/lib/libcrypto.a(sparcv9cap.o)
> sigfillset                          0x198       
> /usr/local/ssl/lib/libcrypto.a(sparcv9cap.o)
> sigdelset                           0x1a4       
> /usr/local/ssl/lib/libcrypto.a(sparcv9cap.o)
> sigdelset                           0x1b0       
> /usr/local/ssl/lib/libcrypto.a(sparcv9cap.o)
> sigdelset                           0x1bc       
> /usr/local/ssl/lib/libcrypto.a(sparcv9cap.o)
> sigdelset                           0x1c8       
> /usr/local/ssl/lib/libcrypto.a(sparcv9cap.o)
> sigdelset                           0x1d4       
> /usr/local/ssl/lib/libcrypto.a(sparcv9cap.o)
> sigdelset                           0x1e0       
> /usr/local/ssl/lib/libcrypto.a(sparcv9cap.o)
> strtoul                             0x164       
> /usr/local/ssl/lib/libcrypto.a(sparcv9cap.o)
> strtoul                             0x428       
> /usr/local/ssl/lib/libcrypto.a(asn1_gen.o)
> strtoul                             0x524       
> /usr/local/ssl/lib/libcrypto.a(asn1_gen.o)
> strtoul                             0x1518      
> /usr/local/ssl/lib/libcrypto.a(asn1_gen.o)
> strtoul                             0x154       
> /usr/local/ssl/lib/libcrypto.a(a_strnid.o)
> getuid                              0x3c8       
> /usr/local/ssl/lib/libcrypto.a(rand_unix.o)
> fstat                               0x8c        
> /usr/local/ssl/lib/libcrypto.a(rand_unix.o)
> dladdr                              0x864       
> /usr/local/ssl/lib/libcrypto.a(dso_dlfcn.o)
> dlopen                              0x44        
> /usr/local/ssl/lib/libcrypto.a(dso_dlfcn.o)
> dlopen                              0x908       
> /usr/local/ssl/lib/libcrypto.a(dso_dlfcn.o)
> dlclose                             0xb4        
> /usr/local/ssl/lib/libcrypto.a(dso_dlfcn.o)
> dlclose                             0x1dc       
> /usr/local/ssl/lib/libcrypto.a(dso_dlfcn.o)
> dlclose                             0x92c       
> /usr/local/ssl/lib/libcrypto.a(dso_dlfcn.o)
> dlsym                               0x2d8       
> /usr/local/ssl/lib/libcrypto.a(dso_dlfcn.o)
> dlsym                               0x458       
> /usr/local/ssl/lib/libcrypto.a(dso_dlfcn.o)
> dlsym                               0x920       
> /usr/local/ssl/lib/libcrypto.a(dso_dlfcn.o)
> dlerror                             0xf0        
> /usr/local/ssl/lib/libcrypto.a(dso_dlfcn.o)
> dlerror                             0x368       
> /usr/local/ssl/lib/libcrypto.a(dso_dlfcn.o)
> dlerror                             0x4d8       
> /usr/local/ssl/lib/libcrypto.a(dso_dlfcn.o)
> dlerror                             0x8cc       
> /usr/local/ssl/lib/libcrypto.a(dso_dlfcn.o)
> ld: fatal: relocations remain against allocatable but non-writable 
> sections
> collect2: ld returned 1 exit status
> *** Error code 1
> make: Fatal error: Command failed for target `mod_ssl.la'
> Current working directory
> /usr/local/apache2/install/httpd-2.4.20/modules/ssl
> *** Error code 1
> The following command caused the error:
> if test `pwd` = "/usr/local/apache2/install/httpd-2.4.20"; then \
>      echo "" ; \
> fi; \
> list=''; for i in $list; do \
>      target="shared-build"; \
>      if test "$i" = "."; then \
>          made_local=yes; \
>          target="local-shared-build"; \
>      fi; \
>      if test "$i" != "srclib"; then \
>          (cd $i && make $target) || exit 1; \
>      fi; \
> done; \
> if test -f 'modules.mk'; then \
>      if test -n 'mod_ssl.la'; then \
>          echo "Building shared: mod_ssl.la"; \
>          if test "$made_local" != "yes"; then \
>                  make "local-shared-build" || exit 1; \
>          fi; \
>      fi; \
> fi; \
> if test `pwd` = "/usr/local/apache2/install/httpd-2.4.20"; then \
>          echo "" ; \
> fi
> make: Fatal error: Command failed for target `shared-build-recursive'
> Current working directory
> /usr/local/apache2/install/httpd-2.4.20/modules/ssl
> *** Error code 1
> The following command caused the error:
> if test `pwd` = "/usr/local/apache2/install/httpd-2.4.20"; then \
>      echo "" ; \
> fi; \
> list='aaa cache core database debugging filters http loggers metadata proxy 
> session slotmem ssl proxy/balancers arch/unix dav/main generators dav/fs 
> mappers'; for i in $list; do \
>      target="shared-build"; \
>      if test "$i" = "."; then \
>          made_local=yes; \
>          target="local-shared-build"; \
>      fi; \
>      if test "$i" != "srclib"; then \
>          (cd $i && make $target) || exit 1; \
>      fi; \
> done; \
> if test -f 'modules.mk'; then \
>      if test -n ''; then \
>          echo "Building shared: "; \
>          if test "$made_local" != "yes"; then \
>                  make "local-shared-build" || exit 1; \
>          fi; \
>      fi; \
> fi; \
> if test `pwd` = "/usr/local/apache2/install/httpd-2.4.20"; then \
>          echo "" ; \
> fi
> make: Fatal error: Command failed for target `shared-build-recursive'
> Current working directory
> /usr/local/apache2/install/httpd-2.4.20/modules
> *** Error code 1
> The following command caused the error:
> if test `pwd` = "/usr/local/apache2/install/httpd-2.4.20"; then \
>      echo "" ; \
> fi; \
> list='srclib os server modules support'; for i in $list; do \
>      target="shared-build"; \
>      if test "$i" = "."; then \
>          made_local=yes; \
>          target="local-shared-build"; \
>      fi; \
>      if test "$i" != "srclib"; then \
>          (cd $i && make $target) || exit 1; \
>      fi; \
> done; \
> if test -f 'modules.mk'; then \
>      if test -n ''; then \
>          echo "Building shared: "; \
>          if test "$made_local" != "yes"; then \
>                  make "local-shared-build" || exit 1; \
>          fi; \
>      fi; \
> fi; \
> if test `pwd` = "/usr/local/apache2/install/httpd-2.4.20"; then \
>          echo "" ; \
> fi
> make: Fatal error: Command failed for target `shared-build-recursive'
> Current working directory /usr/local/apache2/install/httpd-2.4.20
> *** Error code 1
> The following command caused the error:
> otarget=`echo all-recursive|sed s/-recursive//`; \ list='  srclib os server 
> modules support'; \ for i in $list; do \
>      if test -d "$i"; then \
>          target="$otarget"; \
>          echo "Making $target in $i"; \
>          if test "$i" = "."; then \
>                  made_local=yes; \
>                  target="local-$target"; \
>          fi; \
>          (cd $i && make $target) || exit 1; \
>      fi; \
> done; \
> if test "$otarget" = "all" && test -z 'httpd shared-build '; then \
>      made_local=yes; \
> fi; \
> if test "$made_local" != "yes"; then \
>      make "local-$otarget" || exit 1; \ fi
> make: Fatal error: Command failed for target `all-recursive'
> #
>
> =======================================
>
> -----Original Message-----
> From: Huang, Jinhui (OST)
> Sent: Friday, April 29, 2016 9:39 AM
> To: Rainer Jung; users@httpd.apache.org
> Cc: Huang, Jinhui (OST)
> Subject: RE: [users@httpd] Install Apache 2.4.20 on Solaris 10 --- Error "ld: 
> fatal: file ab.o: wrong ELF class: ELFCLASS32"
>
> Thank you for the advice of using pcre 8.38. I installed it last night 
> successfully to replace the old.
>
> When I first try to install it using
> #  export CC="gcc -m64"
> #  ./configure --prefix=/usr/local/apache2/pcre/ # make I received the 
> following error,
>
> ....
> ....
>    CC       libpcre_la-pcre_version.lo
>    CC       libpcre_la-pcre_xclass.lo
>    CC       libpcre_la-pcre_chartables.lo
>    CCLD     libpcre.la
>    CC       libpcreposix_la-pcreposix.lo
>    CCLD     libpcreposix.la
>    CXX      libpcrecpp_la-pcrecpp.lo
>    CXX      libpcrecpp_la-pcre_scanner.lo
>    CXX      libpcrecpp_la-pcre_stringpiece.lo
>    CXXLD    libpcrecpp.la
> ld: fatal: file ./.libs/libpcre.so: wrong ELF class: ELFCLASS64
> ld: fatal: file processing errors. No output written to
> .libs/libpcrecpp.so.0.0.1
> collect2: ld returned 1 exit status
> *** Error code 1
> The following command caused the error:
> echo "  CXXLD   " libpcrecpp.la;/bin/bash ./libtool --silent --tag=CXX    
> --mode=link g++      -O2 -version-info 0:1:0   -o libpcrecpp.la -rpath 
> /usr/local/apache2/pcre/lib libpcrecpp_la-pcrecpp.lo  
> libpcrecpp_la-pcre_scanner.lo  libpcrecpp_la-pcre_stringpiece.lo libpcre.la
> make: Fatal error: Command failed for target `libpcrecpp.la'
> Current working directory /usr/local/apache2/install/pcre-8.38
> *** Error code 1
> make: Fatal error: Command failed for target `all'
>
> Inspired by the example I searched online, I added one more option 
> (--disable-cpp) to the configure. Then the pcre was installed successfully:
>
> # ./configure --prefix=/usr/local/apache2/pcre --disable-cpp ...
> # make clean
> ...
> # make
> ...
> ...
>    CCLD     libpcre.la
>    CC       libpcreposix_la-pcreposix.lo
>    CCLD     libpcreposix.la
>    CC       pcretest-pcretest.o
>    CC       pcretest-pcre_printint.o
>    CCLD     pcretest
> ld: warning: file /usr/local/apache2/install/pcre-8.38/.libs/libpcre.so: 
> linked to ./.libs/libpcre.so: attempted multiple inclusion of file
>    CC       pcregrep-pcregrep.o
>    CCLD     pcregrep
> ld: warning: file /usr/local/apache2/install/pcre-8.38/.libs/libpcre.so: 
> linked to ./.libs/libpcre.so: attempted multiple inclusion of file # # make 
> install ...
>
> I hope the two warnings during make are not important.  Please let me know if 
> you need to see the whole screen capture (text file).
>
>
> Last night, after the install of the PCRE 8.38, I tried the Apache 
> installation again. This time I got a different error message. I will post it 
> very soon.
>
> Jin
>
>
> -----Original Message-----
> From: Rainer Jung [mailto:rainer.j...@kippdata.de]
> Sent: Thursday, April 28, 2016 3:30 PM
> To: users@httpd.apache.org
> Cc: Huang, Jinhui (OST)
> Subject: Re: [users@httpd] Install Apache 2.4.20 on Solaris 10 --- Error "ld: 
> fatal: file ab.o: wrong ELF class: ELFCLASS32"
>
> Am 28.04.2016 um 19:59 schrieb jinhui.huang....@dot.gov:
>> Hi, Rainer:
>> The following is the output of make,  after I run a "make clean" first.
>> Jin
>> --------------------------------------------------------
>> # make clean
>> Making clean in test
>> rm -f *.o *.lo *.slo *.obj *.a *.la
>> rm -rf .libs
>> Making clean in srclib
>> Making clean in apr-util
>> Making clean in test
>> rm -f ./*.o ./*.lo ./*.a ./*.la ./*.so ./*.obj rm -rf ./.libs rm -f 
>> manyfile.bin testfile.txt data/sqlite*.db dbd testall rm -rf 
>> autom4te.cache ......
>> ......
>>
>> # make
>> Making all in srclib
>> Making all in apr
>> /usr/local/apache2/install/httpd-2.4.20/srclib/apr/build/mkdir.sh tools
>> /bin/bash /usr/local/apache2/install/httpd-2.4.20/srclib/apr/libtool 
>> --silent --mode=compile gcc -m64 -g -O2   -DHAVE_CONFIG_H  -DSOLARIS2=10 
>> -D_POSIX_PTHREAD_SEMANTICS -D_REENTRANT   -I./include 
>> -I/usr/local/apache2/install/httpd-2.4.20/srclib/apr/include/arch/unix 
>> -I./include/arch/unix 
>> -I/usr/local/apache2/install/httpd-2.4.20/srclib/apr/include/arch/unix 
>> -I/usr/local/apache2/install/httpd-2.4.20/srclib/apr/include 
>> -I/usr/local/apache2/install/httpd-2.4.20/srclib/apr/include/private 
>> -I/usr/local/apache2/install/httpd-2.4.20/srclib/apr/include/private  -o 
>> tools/gen_test_char.lo -c tools/gen_test_char.c && touch 
>> tools/gen_test_char.lo
>> /bin/bash /usr/local/apache2/inst
>> ......
>> ......
>> pd-2.4.20/modules/ssl -I/usr/local/apache2/install/httpd-2.4.20/modules/test 
>> -I/usr/local/apache2/install/httpd-2.4.20/server 
>> -I/usr/local/apache2/install/httpd-2.4.20/modules/arch/unix 
>> -I/usr/local/apache2/install/httpd-2.4.20/modules/dav/main 
>> -I/usr/local/apache2/install/httpd-2.4.20/modules/generators 
>> -I/usr/local/apache2/install/httpd-2.4.20/modules/mappers  -prefer-non-pic 
>> -static -c util_xml.c && touch util_xml.lo
>> /usr/local/apache2/install/httpd-2.4.20/srclib/apr/libtool --silent 
>> --mode=compile gcc -m64 -std=gnu99  -g -O2      -DSOLARIS2=10 
>> -D_POSIX_PTHREAD_SEMANTICS -D_REENTRANT     -I. 
>> -I/usr/local/apache2/install/httpd-2.4.20/os/unix 
>> -I/usr/local/apache2/install/httpd-2.4.20/include 
>> -I/usr/local/apache2/install/httpd-2.4.20/srclib/apr/include 
>> -I/usr/local/apache2/install/httpd-2.4.20/srclib/apr-util/include 
>> -I/usr/local/apache2/pcre2/include 
>> -I/usr/local/apache2/install/httpd-2.4.20/modules/aaa 
>> -I/usr/local/apache2/install/httpd-2.4.20/modules/cache 
>> -I/usr/local/apache2/install/httpd-2.4.20/modules/core 
>> -I/usr/local/apache2/install/httpd-2.4.20/modules/database 
>> -I/usr/local/apache2/install/httpd-2.4.20/modules/filters 
>> -I/usr/local/apache2/install/httpd-2.4.20/modules/ldap 
>> -I/usr/local/apache2/install/httpd-2.4.20/modules/loggers 
>> -I/usr/local/apache2/install/httpd-2.4.20/modules/lua 
>> -I/usr/local/apache2/install/httpd-2.4.20/modules/proxy 
>> -I/usr/local/apache2/install/httpd-2.4.20!
 /!
>   modules/
> session -I/usr/local/apache2/install/httpd-2.4.20/modules/ssl
> -I/usr/local/apache2/install/httpd-2.4.20/modules/test
> -I/usr/local/apache2/install/httpd-2.4.20/server
> -I/usr/local/apache2/install/httpd-2.4.20/modules/arch/unix
> -I/usr/local/apache2/install/httpd-2.4.20/modules/dav/main
> -I/usr/local/apache2/install/httpd-2.4.20/modules/generators
> -I/usr/local/apache2/install/httpd-2.4.20/modules/mappers
> -prefer-non-pic -static -c util_filter.c && touch util_filter.lo
>> /usr/local/apache2/install/httpd-2.4.20/srclib/apr/libtool --silent 
>> --mode=compile gcc -m64 -std=gnu99  -g -O2      -DSOLARIS2=10 
>> -D_POSIX_PTHREAD_SEMANTICS -D_REENTRANT     -I. 
>> -I/usr/local/apache2/install/httpd-2.4.20/os/unix 
>> -I/usr/local/apache2/install/httpd-2.4.20/include 
>> -I/usr/local/apache2/install/httpd-2.4.20/srclib/apr/include 
>> -I/usr/local/apache2/install/httpd-2.4.20/srclib/apr-util/include 
>> -I/usr/local/apache2/pcre2/include 
>> -I/usr/local/apache2/install/httpd-2.4.20/modules/aaa 
>> -I/usr/local/apache2/install/httpd-2.4.20/modules/cache 
>> -I/usr/local/apache2/install/httpd-2.4.20/modules/core 
>> -I/usr/local/apache2/install/httpd-2.4.20/modules/database 
>> -I/usr/local/apache2/install/httpd-2.4.20/modules/filters 
>> -I/usr/local/apache2/install/httpd-2.4.20/modules/ldap 
>> -I/usr/local/apache2/install/httpd-2.4.20/modules/loggers 
>> -I/usr/local/apache2/install/httpd-2.4.20/modules/lua 
>> -I/usr/local/apache2/install/httpd-2.4.20/modules/proxy 
>> -I/usr/local/apache2/install/httpd-2.4.20!
 /!
>   modules/
> session -I/usr/local/apache2/install/httpd-2.4.20/modules/ssl
> -I/usr/local/apache2/install/httpd-2.4.20/modules/test
> -I/usr/local/apache2/install/httpd-2.4.20/server
> -I/usr/local/apache2/install/httpd-2.4.20/modules/arch/unix
> -I/usr/local/apache2/install/httpd-2.4.20/modules/dav/main
> -I/usr/local/apache2/install/httpd-2.4.20/modules/generators
> -I/usr/local/apache2/install/httpd-2.4.20/modules/mappers
> -prefer-non-pic -static -c util_pcre.c && touch util_pcre.lo
>> util_pcre.c:49:18: pcre.h: No such file or directory
>> util_pcre.c: In function `ap_regfree':
>> util_pcre.c:104: error: `pcre_free' undeclared (first use in this
>> function)
>> util_pcre.c:104: error: (Each undeclared identifier is reported only 
>> once
>> util_pcre.c:104: error: for each function it appears in.)
>> util_pcre.c: In function `ap_regcomp':
>> util_pcre.c:128: error: `PCRE_DUPNAMES' undeclared (first use in this
>> function)
>> util_pcre.c:131: error: `PCRE_CASELESS' undeclared (first use in this
>> function)
>> util_pcre.c:133: error: `PCRE_MULTILINE' undeclared (first use in 
>> this
>> function)
>> util_pcre.c:135: error: `PCRE_DOTALL' undeclared (first use in this
>> function)
>> util_pcre.c:138: warning: implicit declaration of function `pcre_compile2'
>> util_pcre.c:138: warning: assignment makes pointer from integer 
>> without a cast
>> util_pcre.c:151: warning: implicit declaration of function `pcre_fullinfo'
>> util_pcre.c:151: error: syntax error before "pcre"
>> util_pcre.c: In function `ap_regexec_len':
>> util_pcre.c:189: error: `PCRE_NOTBOL' undeclared (first use in this
>> function)
>> util_pcre.c:191: error: `PCRE_NOTEOL' undeclared (first use in this
>> function)
>> util_pcre.c:207: warning: implicit declaration of function `pcre_exec'
>> util_pcre.c:207: error: syntax error before "pcre"
>> util_pcre.c:230: error: `PCRE_ERROR_NOMATCH' undeclared (first use in 
>> this function)
>> util_pcre.c:232: error: `PCRE_ERROR_NULL' undeclared (first use in 
>> this function)
>> util_pcre.c:234: error: `PCRE_ERROR_BADOPTION' undeclared (first use 
>> in this function)
>> util_pcre.c:236: error: `PCRE_ERROR_BADMAGIC' undeclared (first use 
>> in this function)
>> util_pcre.c:238: error: `PCRE_ERROR_UNKNOWN_NODE' undeclared (first 
>> use in this function)
>> util_pcre.c:240: error: `PCRE_ERROR_NOMEMORY' undeclared (first use 
>> in this function)
>> util_pcre.c: In function `ap_regname':
>> util_pcre.c:269: error: syntax error before "pcre"
>> util_pcre.c:271: error: syntax error before "pcre"
>> util_pcre.c:273: error: syntax error before "pcre"
>> *** Error code 1
>> make: Fatal error: Command failed for target `util_pcre.lo'
>> Current working directory
>> /usr/local/apache2/install/httpd-2.4.20/server
>> *** Error code 1
>
> This error is likely a consequence of the error during configure:
>
> checking for pcre-config... false
>
> configure: Using external PCRE library from 
> /usr/local/apache2/pcre2/bin/pcre2-config
>
>     setting PCRE_INCLUDES to "-I/usr/local/apache2/pcre2/include"
>
> Usage: pcre2-config [--prefix] [--exec-prefix] [--version] [--libs8] 
> [--libs-posix]  [--cflags] [--cflags-posix]
>
>     setting PCRE_LIBS to ""
>
> Usage: pcre2-config [--prefix] [--exec-prefix] [--version] [--libs8] 
> [--libs-posix]  [--cflags] [--cflags-posix]
>
>
> This indicates that your try to build httpd against pcre version 10. We only 
> support pcre until version 8, latest is 8.38. PCRE version 10, aka pcre2, is 
> not API compatible with pcre until 8. Since the path 
> /usr/local/apache2/pcre2/ looks like you compiled pcre2 yourself, grab pcre 
> 8.38, compile it again and run configure against that one.
>
> This will IMHO *not* fix you other issue about ab.o being 32 bit. Could it 
> be, that ab.o was in your build directory from another attempt at building 
> where you started without the -m64 flag, so that there was already an old 32 
> bit ab.o file and "make clean" has already fixed that?
>
> Regards,
>
> Rainer

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