First, the downloaded file giac-0.9.2.tar.gz does not correspond to the Manifest. After regenerating the Manifest, it fails to compile: libtool: compile: i686-pc-linux-gnu-g++ -DHAVE_CONFIG_H -I. -I.. -DIN_GIAC -I. -I.. -I. -I.. -O2 -march=native -pipe -fno-strict-aliasing -DGIAC_GENERIC_CONSTANTS -c ti89.cc -fPIC -DPIC -o .libs/ti89.o ti89.cc: In function ‘giac::gen giac::fPart(const giac::gen&, const giac::context*)’: ti89.cc:1957:23: error: too few arguments to function ‘giac::gen giac::fPart(const giac::gen&, const giac::context*)’ ti89.cc:1955:7: note: declared here make[2]: *** [ti89.lo] Error 1 make[2]: *** Waiting for unfinished jobs.... make[2]: Leaving directory `/var/tmp/portage/sci-mathematics/giac-0.9.2/work/giac-0.9.2/src' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/var/tmp/portage/sci-mathematics/giac-0.9.2/work/giac-0.9.2' make: *** [all] Error 2 * ERROR: sci-mathematics/giac-0.9.2 failed (compile phase): * emake failed
The downloaded giac-1.0.0.tar.gz has size which differs from the Manifest. After re-generating Manifest, it compiles, and command-line version works. However, I specified USE=fltk, but giac was not configured to build xcas, the fltk front-end to giac. It installs a stub xcas; when started, it just says No GUI support, try cas instead or recompile Giac with ./configure --enable-fltk-support make clean ; make Inspection of configure shows that this option is, in fact, called --enable-gui; however, configure fails to find the installed fltk-1.3.0-r1. Some patching of configure.in is needed. Also, there are other interesting configure options: --enable-lapack, --enable-pari, --enable-gsl, --enable-gc, maybe, something else. They should be controlled by USE flags and have corresponding DEPENDs.
I'm pretty sure this is fixed, and moreover sci-mathematics/giac-1.7.0.1 is now in the main tree. Please give it a try and report any problems you find.
