Bug 137180 – sci-libs/fftw Won't build after upgrade to gcc-4.1.1

• Status: RESOLVED DUPLICATE of bug 136363
• Product: Gentoo Linux

[Description PL Hayes 2006-06-18 09:13:28 UTC]

checking for i686-pc-linux-gnu-g77... (cached) i686-pc-linux-gnu-g77
checking whether we are using the GNU Fortran 77 compiler... (cached) no
checking whether i686-pc-linux-gnu-g77 accepts -g... (cached) no
checking how to get verbose linking output from i686-pc-linux-gnu-g77... configure: WARNING: compilation failed

checking for Fortran libraries of i686-pc-linux-gnu-g77... 
checking for dummy main to link with Fortran libraries... none
checking for Fortran name-mangling scheme... configure: error: cannot compile a simple Fortran program
See `config.log' for more details.

This error occurs during emerges of both stable fftw-3.0.1-r2 and testing fftw-3.1.1

Earlier in the configure, I saw these messages:

checking for i686-pc-linux-gnu-g77 option to produce PIC... -fPIC
checking if i686-pc-linux-gnu-g77 PIC flag -fPIC works... no
checking if i686-pc-linux-gnu-g77 static flag -static works... no
checking if i686-pc-linux-gnu-g77 supports -c -o file.o... no
checking whether the i686-pc-linux-gnu-g77 linker (/usr/i686-pc-linux-gnu/bin/ld) supports shared libraries... yes
checking dynamic linker characteristics... gcc-config error: i686-pc-linux-gnu-g77 wrapper: Unable to determine executable.
	CTARGET=i686-pc-linux-gnu
	exec=g77

and while following the GCC general upgrade procedure yesterday, I noticed that last message occurring during the configure stage in many packages, though they generally seemed to build okay.

[Comment 1 PL Hayes 2006-06-18 09:16:03 UTC]

Created attachment 89478 [details]
fftw-3.1.1 configure log

[Comment 2 Donnie Berkholz (RETIRED) 2006-06-18 10:22:38 UTC]

Looks like it's this dumb breakage in eselect yet again.

Edit the files in /etc/eselect/compiler/ and remove the lines like alias_gfortran=g77 and alias_g77=gfortran. Also delete /usr/bin/*g77.

[Comment 3 Donnie Berkholz (RETIRED) 2006-06-18 10:23:15 UTC]

Oh also looks like you're using confcache. Edit /var/tmp/confcache/config.cache to remove the line with g77 in it.

[Comment 4 PL Hayes 2006-06-18 11:35:49 UTC]

I didn't have any of those alias lines in i686-pc-linux-gnu-4.1.1 - only in the old i686-pc-linux-gnu-3.4.6.conf file - and I'm not using confcache (it's not installed and there's no /var/tmp/confcache/) but I did 'rm /usr/bin/*g77' and that seems to have done the trick.

Thanks very much Donnie :)

[Comment 5 Donnie Berkholz (RETIRED) 2006-06-21 12:52:04 UTC]

Reopening to resolve properly.

[Comment 6 Donnie Berkholz (RETIRED) 2006-06-21 12:52:32 UTC]

*** This bug has been marked as a duplicate of 136363 ***