[racket] [plt-scheme] Build PLT Scheme on Mac OS X Snow Leopard (10.6) for Leopard (10.5)

You may have more success with

 configure --enable-sdk=/Developer/SDKs/MacOSX10.5.sdk

That has an effect similar to your flag settings, except that PREFLAGS
is set instead of CFLAGS. Unlike CFLAGS, PREFLAGS is used for C
pre-processing, and pre-processor expansion is used directly to build
the 3m variant of mzscheme.

At Fri, 4 Jun 2010 22:59:34 -0400, Todd V Rovito wrote:
> Greetings,
>     I have a project that I am working on were people do most of their work
> on Leopard but machines are starting to trickle in that have 10.6 or Snow
> Leopard.  So far we have been able to move the 10.5 binaries to 10.6 and run
> with no problems.  Now as a developer I have 10.6 and I want to build the
> project for 10.5, Apple supports this with the options -isysroot
> /Developer/SDKs/MacOSX10.5.sdk -mmacosx-version-min=10.5 as documented on
> this web page:
> http://cocoawithlove.com/2009/09/building-for-earlier-os-versions-in.html.
> This seems to work for some simple projects both in xcode and on the command
> line.  But with PLT Scheme version 4.2.3 (for mac) I can't build using the
> following commands:
> export LDFLAGS="-isysroot /Developer/SDKs/MacOSX10.5.sdk
> -mmacosx-version-min=10.5"
> export CFLAGS="-isysroot /Developer/SDKs/MacOSX10.5.sdk
> -mmacosx-version-min=10.5"
> ./configure --prefix=/opt/plt-scheme --disable-mred --enable-xonx && make
> both && make install-both
> 
> The configure runs ok but the build failes with the output below, thanks for
> the help.
> 
> 
> 
> gcc -m32 -I./.. -I./../include -isysroot /Developer/SDKs/MacOSX10.5.sdk
> -mmacosx-version-min=10.5 -DOS_X -D_DARWIN_UNLIMITED_SELECT -DXONX
> -DNEWGC_BTC_ACCOUNT    -Wall  -I./.. -c ./gc2.c -o gc2.o
> ar ruv ../libmzscheme3m.a salloc.o bignum.o bool.o builtin.o char.o
> complex.o dynext.o env.o error.o eval.o file.o fun.o future.o hash.o jit.o
> list.o module.o mzrt.o network.o numarith.o number.o numcomp.o numstr.o
> places.o port.o portfun.o print.o rational.o read.o regexp.o sema.o
> setjmpup.o string.o struct.o stxobj.o symbol.o syntax.o thread.o type.o
> vector.o foreign.o ../src/gmp.o ../src/unwind.o
> ../../foreign/gcc/libffi/src/*.o ../../foreign/gcc/libffi/src/*/*.o gc2.o
> ar: creating archive ../libmzscheme3m.a
> a - salloc.o
> a - bignum.o
> a - bool.o
> a - builtin.o
> a - char.o
> a - complex.o
> a - dynext.o
> a - env.o
> a - error.o
> a - eval.o
> a - file.o
> a - fun.o
> a - future.o
> a - hash.o
> a - jit.o
> a - list.o
> a - module.o
> a - mzrt.o
> a - network.o
> a - numarith.o
> a - number.o
> a - numcomp.o
> a - numstr.o
> a - places.o
> a - port.o
> a - portfun.o
> a - print.o
> a - rational.o
> a - read.o
> a - regexp.o
> a - sema.o
> a - setjmpup.o
> a - string.o
> a - struct.o
> a - stxobj.o
> a - symbol.o
> a - syntax.o
> a - thread.o
> a - type.o
> a - vector.o
> a - foreign.o
> a - ../src/gmp.o
> a - ../src/unwind.o
> a - ../../foreign/gcc/libffi/src/closures.o
> a - ../../foreign/gcc/libffi/src/debug.o
> a - ../../foreign/gcc/libffi/src/java_raw_api.o
> a - ../../foreign/gcc/libffi/src/prep_cif.o
> a - ../../foreign/gcc/libffi/src/raw_api.o
> a - ../../foreign/gcc/libffi/src/types.o
> a - ../../foreign/gcc/libffi/src/x86/darwin.o
> a - ../../foreign/gcc/libffi/src/x86/darwin64.o
> a - ../../foreign/gcc/libffi/src/x86/ffi.o
> a - ../../foreign/gcc/libffi/src/x86/ffi64.o
> a - gc2.o
> /usr/bin/ranlib: file: ../libmzscheme3m.a(future.o) has no symbols
> /usr/bin/ranlib: file: ../libmzscheme3m.a(mzrt.o) has no symbols
> /usr/bin/ranlib: file: ../libmzscheme3m.a(unwind.o) has no symbols
> /usr/bin/ranlib: file: ../libmzscheme3m.a(darwin64.o) has no symbols
> /usr/bin/ranlib: file: ../libmzscheme3m.a(ffi64.o) has no symbols
> ranlib ../libmzscheme3m.a
> ranlib: file: ../libmzscheme3m.a(future.o) has no symbols
> ranlib: file: ../libmzscheme3m.a(mzrt.o) has no symbols
> ranlib: file: ../libmzscheme3m.a(unwind.o) has no symbols
> ranlib: file: ../libmzscheme3m.a(darwin64.o) has no symbols
> ranlib: file: ../libmzscheme3m.a(ffi64.o) has no symbols
> cd ..; gcc -m32 -o mzscheme3m  gc2/main.o libmzscheme3m.a -isysroot
> /Developer/SDKs/MacOSX10.5.sdk -mmacosx-version-min=10.5 -ldl -lm  -liconv
> Undefined symbols:
>   "_fopen$UNIX2003", referenced from:
>       _copy_file in libmzscheme3m.a(file.o)
>       _copy_file in libmzscheme3m.a(file.o)
> ld: symbol(s) not found
> collect2: ld returned 1 exit status
> make[4]: *** [../mzscheme3m] Error 1
> make[3]: *** [all] Error 2
> make[2]: *** [3m] Error 2
> make[1]: *** [3m] Error 2
> make: *** [both] Error 2
> _________________________________________________
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>   http://list.cs.brown.edu/mailman/listinfo/plt-scheme

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