I think this may best be solved by the user adding linkflags=-ldl to the command line.
Thanks, John. That worked for me. I am curious, why is the file icu-i18n.pc file (shown below) not yielding the -ldl flag. Is there a way to debug this. I am new to this. Thanks. =CS ---------------------------- /home/cxs/icu2/lib/pkgconfig/icu-i18n.pc -------------> # Copyright (C) 2010, International Business Machines Corporation. All Rights Reserved. prefix = /home/lwalia/icu2 exec_prefix = ${prefix} #bindir = ${exec_prefix}/bin libdir = ${exec_prefix}/lib includedir = ${prefix}/include baselibs = -lpthread -ldl -lm #datarootdir = ${prefix}/share #datadir = ${datarootdir} #sbindir = ${exec_prefix}/sbin #mandir = ${datarootdir}/man #sysconfdir = ${prefix}/etc CFLAGS = -O3 -Wall -ansi -pedantic -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -Wno-long-long $(THREADSCFLAGS) #CXXFLAGS = -O3 -W -Wall -ansi -pedantic -Wpointer-arith -Wwrite-strings -Wno-long-long $(THREADSCXXFLAGS) DEFS = -DHAVE_CONFIG_H UNICODE_VERSION=6.0 ICUPREFIX=icu ICULIBSUFFIX= LIBICU=lib${ICUPREFIX} #SHAREDLIBCFLAGS=-fPIC pkglibdir=${libdir}/icu${ICULIBSUFFIX}/4.6 #pkgdatadir=${datadir}/icu${ICULIBSUFFIX}/4.6 ICUDATA_NAME = icudt46l #ICUPKGDATA_DIR=${exec_prefix}/lib #ICUDATA_DIR=${pkgdatadir} ICUDESC=International Components for Unicode Version: 4.6 Cflags: -I${includedir} # end of icu.pc.in Description: International Components for Unicode: Internationalization library Name: icu-i18n Requires: icu-uc Libs: -licui18n ----- Original Message ---- From: John Maddock <boost.regex@virgin.net> To: boost@lists.boost.org Sent: Tue, January 4, 2011 9:32:32 AM Subject: Re: [boost] compiling Boost boost_1_45_0 regex with icu (redhat). Aproblem and its fix.