Hello,
Trying to link to the Boost libraries for openvrml resulted in the following error:
/bin/sh ../libtool --tag=CXX --mode=link g++ -D_THREAD_SAFE -g -O2 -lboost_system-xgcc40-mt-1_37.dylib -o browser browser.o libtest-openvrml.la -lboost_unit_test_framework-xgcc40-mt-1_37 -lboost_filesystem-xgcc40-mt-1_37
g++ -D_THREAD_SAFE -g -O2 -o .libs/browser browser.o -Wl,-bind_at_load -lboost_system-xgcc40-mt-1_37.dylib ./.libs/libtest-openvrml.a -L/usr/local/lib -L/opt/local/lib /Users/frank/FirefoxDownloads/openvrml-0.17.12/src/libopenvrml/.libs/libopenvrml.dylib -L/opt/local/lib/firefox-2.0.0.20 /opt/local/lib/libjpeg.dylib /opt/local/lib/libpng12.dylib /opt/local/lib/libfontconfig.dylib /opt/local/lib/libiconv.dylib /opt/local/lib/libexpat.dylib /opt/local/lib/libfreetype.dylib -lz -lmozjs -lplds4 -lplc4 -lnspr4 -lboost_thread-xgcc40-mt-1_37 -lboost_unit_test_framework-xgcc40-mt-1_37 -lboost_filesystem-xgcc40-mt-1_37
/usr/bin/ld: can't locate file for: -lboost_system-xgcc40-mt-1_37.dylib
collect2: ld returned 1 exit status
make[2]: *** [browser] Error 1
make[2]: Leaving directory `/Users/frank/FirefoxDownloads/openvrml-0.17.12/tests'
make[1]: *** [check-am] Error 2
make[1]: Leaving directory `/Users/frank/FirefoxDownloads/openvrml-0.17.12/tests'
make: *** [check-recursive] Error 1
The command sequence that led to the error was:
./configure BOOST_LIB_SUFFIX="-xgcc40-mt-1_37" LDFLAGS="-L/usr/local/lib -L/opt/local/lib" CPPFLAGS=-I"/usr/local/spidermonkey/include/ -I/Users/frank/FirefoxDownloads/xulrunner-sdk/sdk/include/ -DXP_UNIX" PKG_CONFIG_PATH="/opt/local/lib/pkgconfig/:/usr/local/lib/pkgconfig:/sw/lib/pkgconfig" --with-libjs
make
make check
A work around to the error was:
make check LDFLAGS='-lboost_system-xgcc40-mt-1_37'
The question is why the additional -l was needed to link two Boost libraries in order to overcome a dependency between the two Boost libraries.