Re: perl 5.10.0 / osx 10.5.2 'make' dies at "error: redefinition of 'union semun'"

hi,

On Wed, Mar 5, 2008 at 11:17 AM, Edward Moy <[email protected]> wrote:
> Configure determines this by trying to compile:
>
> ----------- try.c -----------
> #include <sys/types.h>
> #include <sys/ipc.h>
> #include <sys/sem.h>
> int main () { union semun semun; semun.buf = 0; }
> ------------------------------
>
> What happens when you try to compile the above program?

with

	gcc --version
		powerpc-apple-darwin9-gcc-4.2.1 (GCC) 4.2.1 (Apple Inc. build 5531)
	gcc -v try.c

looks ok to me,


	Using built-in specs.
	Target: powerpc-apple-darwin9
	Configured with:
/usr/ports/gcc_42-5531/gcc_42-5531/build/obj/src/configure
--disable-checking -enable-werror --prefix=/usr
--mandir=/usr/share/man --enable-languages=c,objc,c++,obj-c++
--program-transform-name=/^[cg][^.-]*$/s/$/-4.2/
--with-gxx-include-dir=/usr/include/c++/4.0.0 --with-slibdir=/usr/lib
--build=powerpc-apple-darwin9 --host=powerpc-apple-darwin9
--target=powerpc-apple-darwin9
	Thread model: posix
	gcc version 4.2.1 (Apple Inc. build 5531)
	 /usr/libexec/gcc/powerpc-apple-darwin9/4.2.1/cc1 -quiet -v
-D__DYNAMIC__ try.c -fPIC -quiet -dumpbase try.c
-mmacosx-version-min=10.5 -auxbase try -version -o
/var/folders/fi/fi+R69XvFXyPa7H6QIvBUk+++TI/-Tmp-//ccDnzd3s.s
	ignoring nonexistent directory
"/usr/lib/gcc/powerpc-apple-darwin9/4.2.1/../../../../powerpc-apple-darwin9/include"
	#include "..." search starts here:
	#include <...> search starts here:
	 /usr/local/include
	 /usr/lib/gcc/powerpc-apple-darwin9/4.2.1/include
	 /usr/include
	 /System/Library/Frameworks (framework directory)
	 /Library/Frameworks (framework directory)
	End of search list.
	GNU C version 4.2.1 (Apple Inc. build 5531) (powerpc-apple-darwin9)
		compiled by GNU C version 4.2.1 (Apple Inc. build 5531).
	GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
	Compiler executable checksum: 388881bffcb05d987b0795677d6c6078
	 /usr/libexec/gcc/powerpc-apple-darwin9/4.2.1/as -arch ppc -o
/var/folders/fi/fi+R69XvFXyPa7H6QIvBUk+++TI/-Tmp-//ccTS1Z3j.o
/var/folders/fi/fi+R69XvFXyPa7H6QIvBUk+++TI/-Tmp-//ccDnzd3s.s
	 /usr/libexec/gcc/powerpc-apple-darwin9/4.2.1/collect2 -dynamic -arch
ppc -macosx_version_min 10.5 -weak_reference_mismatches non-weak -o
a.out -lcrt1.10.5.o -L/usr/lib/gcc/powerpc-apple-darwin9/4.2.1
-L/usr/lib/gcc/powerpc-apple-darwin9/4.2.1
-L/usr/lib/gcc/powerpc-apple-darwin9/4.2.1/../../..
/var/folders/fi/fi+R69XvFXyPa7H6QIvBUk+++TI/-Tmp-//ccTS1Z3j.o
-lgcc_s.10.5 -lgcc -lSystemStubs -lSystem

> I forgot to mention that I'm still using the 4.0.1 compiler, while it looks
> like you're using the 4.2 compiler.  If the above fails to compile with 4.2,
> you might try compiling try.c with 4.0.1 just to see if 4.2 has a bug
> (though I would think this unlikely).

	gcc_select 4.0
		Default compiler has been set to:
		gcc version 4.0.1 (Apple Inc. build 5465)
	gcc -v try.c

	Using built-in specs.
	Target: powerpc-apple-darwin9
	Configured with: /var/tmp/gcc/gcc-5465~16/src/configure
--disable-checking -enable-werror --prefix=/usr --mandir=/share/man
--enable-languages=c,objc,c++,obj-c++
--program-transform-name=/^[cg][^.-]*$/s/$/-4.0/
--with-gxx-include-dir=/include/c++/4.0.0 --with-slibdir=/usr/lib
--build=i686-apple-darwin9 --program-prefix=
--host=powerpc-apple-darwin9 --target=powerpc-apple-darwin9
	Thread model: posix
	gcc version 4.0.1 (Apple Inc. build 5465)
	 /usr/libexec/gcc/powerpc-apple-darwin9/4.0.1/cc1 -quiet -v
-D__DYNAMIC__ try.c -fPIC -quiet -dumpbase try.c
-mmacosx-version-min=10.5 -auxbase try -version -o
/var/folders/fi/fi+R69XvFXyPa7H6QIvBUk+++TI/-Tmp-//ccNmRTyR.s
	ignoring nonexistent directory
"/usr/lib/gcc/powerpc-apple-darwin9/4.0.1/../../../../powerpc-apple-darwin9/include"
	#include "..." search starts here:
	#include <...> search starts here:
	 /usr/local/include
	 /usr/lib/gcc/powerpc-apple-darwin9/4.0.1/include
	 /usr/include
	 /System/Library/Frameworks (framework directory)
	 /Library/Frameworks (framework directory)
	End of search list.
	GNU C version 4.0.1 (Apple Inc. build 5465) (powerpc-apple-darwin9)
		compiled by GNU C version 4.0.1 (Apple Inc. build 5465).
	GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
	Compiler executable checksum: 9f5f0a20bb36a9596f05e3c117ac5032
	 /usr/libexec/gcc/powerpc-apple-darwin9/4.0.1/as -arch ppc -o
/var/folders/fi/fi+R69XvFXyPa7H6QIvBUk+++TI/-Tmp-//ccvNbScg.o
/var/folders/fi/fi+R69XvFXyPa7H6QIvBUk+++TI/-Tmp-//ccNmRTyR.s
	 /usr/libexec/gcc/powerpc-apple-darwin9/4.0.1/collect2 -dynamic -arch
ppc -macosx_version_min 10.5 -weak_reference_mismatches non-weak -o
a.out -lcrt1.10.5.o -L/usr/lib/powerpc-apple-darwin9/4.0.1
-L/usr/lib/gcc/powerpc-apple-darwin9/4.0.1
-L/usr/lib/gcc/powerpc-apple-darwin9/4.0.1
-L/usr/lib/gcc/powerpc-apple-darwin9/4.0.1/../../../powerpc-apple-darwin9/4.0.1
-L/usr/lib/gcc/powerpc-apple-darwin9/4.0.1/../../..
/var/folders/fi/fi+R69XvFXyPa7H6QIvBUk+++TI/-Tmp-//ccvNbScg.o
-lgcc_s.10.5 -lgcc -lSystemStubs -lSystem


looks effectively the same; only diff is:

GCC 4.2 -> ... --build=powerpc-apple-darwin9
--host=powerpc-apple-darwin9 --target=powerpc-apple-darwin9
GCC 4.0 -> ... --build=i686-apple-darwin9 ..
--host=powerpc-apple-darwin9 --target=powerpc-apple-darwin9