CPPUNIT_CFLAGS aren't passed to the compiler

[Tres Seaver]

To reproduce, you need to be on a machine where 'check' and 'cppunit'
are installed in non-standard locations. In my case, they are installed
"above" the tree in '../parts':

 $ bzr co lp:subunit
 $ cd subunit
 $ autoreconf -vi
 ...
 $ CHECK_CFLAGS=-I../../parts/check/include/ \
   CHECK_LIBS=-L../../parts/check/libs \
   CPPUNIT_CFLAGS=-I../../parts/cppunit/include \
   CPPUNIT_LIBS=-L../../parts/cppunit/libs \
   ./configure --prefix=$(cd ../.. && pwd)/parts/subunit
 ...
 checking for CHECK... yes
 checking for CPPUNIT... yes
 configure: creating ./config.status
 config.status: creating libsubunit.pc
 config.status: creating libcppunit_subunit.pc
 config.status: creating Makefile
 config.status: creating perl/Makefile.PL
 config.status: creating config.h
 config.status: executing depfiles commands
 config.status: executing libtool commands
 $ make
 make all-am
 make[1]: Entering directory `/home/tseaver/projects/Zope/Z3/zope.testing/foo/subunit'
 depbase=`echo c/lib/child.lo | sed 's|[^/]*$|.deps/&|;s|\.lo$||'`;\
     /bin/bash ./libtool --tag=CC --mode=compile gcc -DHAVE_CONFIG_H -I. -Wall -Werror -Wextra -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings -Wno-variadic-macros -I./c/include -g -O2 -MT c/lib/child.lo -MD -MP -MF $depbase.Tpo -c -o c/lib/child.lo c/lib/child.c &&\
     mv -f $depbase.Tpo $depbase.Plo
 libtool: compile: gcc -DHAVE_CONFIG_H -I. -Wall -Werror -Wextra -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings -Wno-variadic-macros -I./c/include -g -O2 -MT c/lib/child.lo -MD -MP -MF c/lib/.deps/child.Tpo -c c/lib/child.c -fPIC -DPIC -o c/lib/.libs/child.o
 libtool: compile: gcc -DHAVE_CONFIG_H -I. -Wall -Werror -Wextra -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings -Wno-variadic-macros -I./c/include -g -O2 -MT c/lib/child.lo -MD -MP -MF c/lib/.deps/child.Tpo -c c/lib/child.c -o c/lib/child.o >/dev/null 2>&1
 /bin/bash ./libtool --tag=CC --mode=link gcc -Wall -Werror -Wextra -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings -Wno-variadic-macros -I./c/include -g -O2 -o libsubunit.la -rpath /home/tseaver/projects/Zope/Z3/zope.testing/parts/subunit/lib c/lib/child.lo
 libtool: link: gcc -shared c/lib/.libs/child.o -Wl,-soname -Wl,libsubunit.so.0 -o .libs/libsubunit.so.0.0.0
 libtool: link: (cd ".libs" && rm -f "libsubunit.so.0" && ln -s "libsubunit.so.0.0.0" "libsubunit.so.0")
 libtool: link: (cd ".libs" && rm -f "libsubunit.so" && ln -s "libsubunit.so.0.0.0" "libsubunit.so")
 libtool: link: ar cru .libs/libsubunit.a c/lib/child.o
 libtool: link: ranlib .libs/libsubunit.a
 libtool: link: ( cd ".libs" && rm -f "libsubunit.la" && ln -s "../libsubunit.la" "libsubunit.la" )
 depbase=`echo c++/SubunitTestProgressListener.lo | sed 's|[^/]*$|.deps/&|;s|\.lo$||'`;\
     /bin/bash ./libtool --tag=CXX --mode=compile g++ -DHAVE_CONFIG_H -I. -Wall -Werror -Wextra -Wwrite-strings -Wno-variadic-macros -I./c/include -g -O2 -MT c++/SubunitTestProgressListener.lo -MD -MP -MF $depbase.Tpo -c -o c++/SubunitTestProgressListener.lo c++/SubunitTestProgressListener.cpp &&\
     mv -f $depbase.Tpo $depbase.Plo
 libtool: compile: g++ -DHAVE_CONFIG_H -I. -Wall -Werror -Wextra -Wwrite-strings -Wno-variadic-macros -I./c/include -g -O2 -MT c++/SubunitTestProgressListener.lo -MD -MP -MF c++/.deps/SubunitTestProgressListener.Tpo -c c++/SubunitTestProgressListener.cpp -fPIC -DPIC -o c++/.libs/SubunitTestProgressListener.o
 c++/SubunitTestProgressListener.cpp:16:31: error: cppunit/Exception.h: No such file or directory

[Robert Collins (lifeless)]

Sorry for the spam, but before I manually start trying to reproduce this; is there any chance it's a libtool or other plumbing bug? Does it still happen?

[Tres Seaver (tseaver)]

I'm afraid that the sandbox where I tried that is long gone, and never checked in.