auto/make LINK variable doesn't reflect CFLAGS

[Chris Nehren]

The auto/make script sets some variables like $CC, $CFLAGS, and $LINK. It applies $CFLAGS to $CC which is correct. However, it sets $LINK to $CC without respecting $CFLAGS, which causes problems like

ld: fatal: file objs/src/core/nginx.o: wrong ELF class: ELFCLASS64
ld: fatal: file processing errors. No output written to objs/nginx
collect2: ld returned 1 exit status

when trying to build nginx 64bit on illumos.

[Chris Nehren]

patch for auto/make to fix problem

[maxim]

Sergey, please take a look.

[Sergey Budnevitch]

It seems you have defined CFLAGS environment variable, and thus turned off normal nginx configuration, so if this is the case it is your obligation to provide correct flags to compiler and linker. You could add necessary linker options by --with-ld-opt=.

If the only thing you want is to build nginx, you have no need to define CFLAGS, instead you should add --with-cpu-opt=amd64 --with-cc=/path/to/c/compiler to nginx configure.

As to LINK variable it is incorrect place for linker options in any case, use CORE_LINK instead.