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Adding a new configure option to enable/disable getenv redefinition

From: Vicente Olivert Riera
Subject: Adding a new configure option to enable/disable getenv redefinition
Date: Wed, 8 Oct 2014 15:30:11 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.8.0


when bash is being cross-compiled it can't detect if getenv can be redefined...

configure:14432: checking to see if getenv can be redefined
configure:14438: WARNING: cannot check getenv redefinition if cross
compiling -- defaulting to yes
configure:14489: result: yes

...so it defaults to 'yes', and can cause build failures like this one:

/br/output/host/usr/bin/mipsel-ctng-linux-uclibc-gcc -L./builtins -L/br/output/host/usr/mipsel-buildroot-linux-uclibc/sysroot/lib -L/br/output/host/usr/mipsel-buildroot-linux-uclibc/sysroot/lib -L./lib/glob -L./lib/tilde -L./lib/sh -static -static -static -rdynamic -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -pipe -Os -static -o bash shell.o eval.o y.tab.o general.o make_cmd.o print_cmd.o dispose_cmd.o execute_cmd.o variables.o copy_cmd.o error.o expr.o flags.o jobs.o subst.o hashcmd.o hashlib.o mailcheck.o trap.o input.o unwind_prot.o pathexp.o sig.o test.o version.o alias.o array.o arrayfunc.o assoc.o braces.o bracecomp.o bashhist.o bashline.o list.o stringlib.o locale.o findcmd.o redir.o pcomplete.o pcomplib.o syntax.o xmalloc.o signames.o -lbuiltins -lglob -lsh -lreadline -lhistory -lcurses -ltilde /br/output/host/usr/mipsel-buildroot-linux-uclibc/sysroot/usr/lib/libc.a(getenv.os): In function `__GI_getenv':
getenv.c:(.text+0x0): multiple definition of `getenv'
./lib/sh/libsh.a(getenv.o):getenv.c:(.text+0x0): first defined here
collect2: error: ld returned 1 exit status

What do you think about adding a new configure option like "--with-getenv=yes|no" to explicitly state if getenv has to be redefined?


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