graphviz 2.40: libtool: compile: unable to infer tagged configuration

[TonyCrawford]

Tried after cleaning and reconfiguring; it's well stuck.

OS X 10.9.5;

Apple LLVM version 6.0 (clang-600.0.57) (based on LLVM 3.5svn);

Appending main.log and port -v installed;

here's the build command that seems to trip the error:

:info:build /bin/sh ../../libtool    --mode=compile /usr/bin/clang -DHAVE_CONFIG_H -I. -I../..  -I../.. -I../../lib/common -I../../lib/pathp
lan -I../../lib/gvc -I../../lib/cgraph -I../../lib/cdt  -I/opt/local/include -I/opt/local/include  -pipe -Os -arch x86_64 -MT GVTextLayout.l
o -MD -MP -MF .deps/GVTextLayout.Tpo -c -o GVTextLayout.lo GVTextLayout.m

:info:build libtool: compile:  /usr/bin/clang -std=gnu11 -DHAVE_CONFIG_H -I. -I../.. -I../.. -I../../lib/common -I../../lib/pathplan -I../..
/lib/gvc -I../../lib/cgraph -I../../lib/cdt -I/opt/local/include -I/opt/local/include -pipe -Os -arch x86_64 -Wall -Wextra -Wmissing-include
-dirs -Wswitch-default -Wfloat-equal -Wundef -Wshadow -Wpointer-arith -Wbad-function-cast -Wcast-qual -Wconversion -Wstrict-prototypes -Wmis
sing-prototypes -Wnested-externs -fno-common -Wall -MT gvtextlayout_quartz.lo -MD -MP -MF .deps/gvtextlayout_quartz.Tpo -c gvtextlayout_quar
tz.c  -fno-common -DPIC -o .libs/gvtextlayout_quartz.o

:info:build libtool: compile: unable to infer tagged configuration

:info:build libtool:   error: specify a tag with '--tag'

:info:build make[3]: *** [GVTextLayout.lo] Error 1

[TonyCrawford]

main.log

[TonyCrawford]

port -v installed output

[jmroot (Joshua Root)]

That libtool invocation is indeed missing --tag=CC.