xz-bootstrap and python27-bootstrap pick llvm-gcc-4.2 instead of gcc-4.2 on Leopard

[barracuda156]

--->  Configuring xz-bootstrap
Executing:  cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_archivers_xz/xz-bootstrap/work/xz-5.4.5" && ./configure --prefix=/opt/local/libexec/xz-bootstrap --disable-dependency-tracking --disable-doc --disable-lzma-links --disable-lzmadec --disable-lzmainfo --disable-nls --disable-scripts --disable-static --disable-xzdec --without-libiconv-prefix --without-libintl-prefix 

XZ Utils 5.4.5

System type:
checking build system type... powerpc-apple-darwin9.8.0
checking host system type... powerpc-apple-darwin9.8.0

Configure options:
checking if debugging code should be compiled... no
checking which encoders to build... lzma1 lzma2 delta x86 powerpc ia64 arm armthumb arm64 sparc
checking which decoders to build... lzma1 lzma2 delta x86 powerpc ia64 arm armthumb arm64 sparc
checking which match finders to build... hc3 hc4 bt2 bt3 bt4
checking which integrity checks to build... crc32 crc64 sha256
checking if external SHA-256 should be used... no
checking if MicroLZMA support should be built... yes
checking if .lz (lzip) decompression support should be built... yes
checking if assembler optimizations should be used... no
checking if small size is preferred over speed... no
checking if threading support is wanted... yes, posix
checking how much RAM to assume if the real amount is unknown... 128 MiB
checking if sandboxing should be used... maybe (autodetect)

checking for a shell that conforms to POSIX... /bin/sh

Initializing Automake:
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a race-free mkdir -p... ./build-aux/install-sh -c -d
checking for gawk... no
checking for mawk... no
checking for nawk... no
checking for awk... awk
checking whether make sets $(MAKE)... yes
checking whether make supports nested variables... yes
checking whether ln -s works... yes
checking whether make supports the include directive... yes (GNU style)
checking for gcc... /Developer/usr/bin/llvm-gcc-4.2
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables... 
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether the compiler supports GNU C... yes
checking whether /Developer/usr/bin/llvm-gcc-4.2 accepts -g... yes
checking for /Developer/usr/bin/llvm-gcc-4.2 option to enable C11 features... unsupported
checking for /Developer/usr/bin/llvm-gcc-4.2 option to enable C99 features... -std=gnu99
checking whether /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 understands -c and -o together... yes
checking dependency style of /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99... none
checking dependency style of /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99... none
checking for stdio.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for strings.h... yes
checking for sys/stat.h... yes
checking for sys/types.h... yes
checking for unistd.h... yes
checking for wchar.h... yes
checking for minix/config.h... no
checking whether it is safe to define __EXTENSIONS__... yes
checking whether _XOPEN_SOURCE should be defined... no
checking for a sed that does not truncate output... /usr/bin/sed
checking how to run the C preprocessor... /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 -E
checking for grep that handles long lines and -e... /usr/bin/grep
checking for egrep... /usr/bin/grep -E
checking for /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 options needed to detect all undeclared functions... none needed

POSIX threading support:
checking whether /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 is Clang... no
checking whether pthreads work with "-pthread" and "-lpthread"... yes
checking for joinable pthread attribute... PTHREAD_CREATE_JOINABLE
checking whether more special flags are required for pthreads... no
checking for PTHREAD_PRIO_INHERIT... yes
checking for library containing clock_gettime... no
checking for clock_gettime... no
checking for pthread_condattr_setclock... no
checking whether CLOCK_MONOTONIC is declared... no

Initializing Libtool:
checking how to print strings... printf
checking for a sed that does not truncate output... (cached) /usr/bin/sed
checking for fgrep... /usr/bin/grep -F
checking for ld used by /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99... /Developer/usr/llvm-gcc-4.2/libexec/gcc/powerpc-apple-darwin9/4.2.1/ld
checking if the linker (/Developer/usr/llvm-gcc-4.2/libexec/gcc/powerpc-apple-darwin9/4.2.1/ld) is GNU ld... no
checking for BSD- or MS-compatible name lister (nm)... /usr/bin/nm -p
checking the name lister (/usr/bin/nm -p) interface... BSD nm
checking the maximum length of command line arguments... 196608
checking how to convert powerpc-apple-darwin9.8.0 file names to powerpc-apple-darwin9.8.0 format... func_convert_file_noop
checking how to convert powerpc-apple-darwin9.8.0 file names to toolchain format... func_convert_file_noop
checking for /Developer/usr/llvm-gcc-4.2/libexec/gcc/powerpc-apple-darwin9/4.2.1/ld option to reload object files... -r
checking for file... file
checking for objdump... no
checking how to recognize dependent libraries... pass_all
checking for dlltool... no
checking how to associate runtime and link libraries... printf %s\n
checking for ar... ar
checking for archiver @FILE support... no
checking for strip... strip
checking for ranlib... ranlib
checking command to parse /usr/bin/nm -p output from /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 object... ok
checking for sysroot... no
checking for a working dd... /bin/dd
checking how to truncate binary pipes... /bin/dd bs=4096 count=1
checking for mt... no
checking if : is a manifest tool... no
checking for dsymutil... dsymutil
checking for nmedit... nmedit
checking for lipo... lipo
checking for otool... otool
checking for otool64... no
checking for -single_module linker flag... yes
checking for -exported_symbols_list linker flag... yes
checking for -force_load linker flag... ld: unknown option: -force_load
ld: unknown option: -force_load
no
checking for dlfcn.h... yes
checking for objdir... .libs
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 supports -fno-rtti -fno-exceptions... no
checking for /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 option to produce PIC... -fno-common -DPIC
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 PIC flag -fno-common -DPIC works... yes
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 static flag -static works... no
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 supports -c -o file.o... yes
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 supports -c -o file.o... (cached) yes
checking whether the /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 linker (/Developer/usr/llvm-gcc-4.2/libexec/gcc/powerpc-apple-darwin9/4.2.1/ld) supports shared libraries... yes
checking dynamic linker characteristics... darwin9.8.0 dyld
checking how to hardcode library paths into programs... immediate
checking whether stripping libraries is possible... yes
checking if libtool supports shared libraries... yes
checking whether to build shared libraries... yes
checking whether to build static libraries... no
checking for windres... no
checking if library symbol versioning should be used... no

Initializing gettext:
checking whether NLS is requested... no
checking for msgfmt... no
checking for gmsgfmt... :
checking for xgettext... no
checking for msgmerge... no
checking for ld... /Developer/usr/llvm-gcc-4.2/libexec/gcc/powerpc-apple-darwin9/4.2.1/ld
checking if the linker (/Developer/usr/llvm-gcc-4.2/libexec/gcc/powerpc-apple-darwin9/4.2.1/ld) is GNU ld... no
checking for shared library run path origin... done
checking 32-bit host C ABI... yes
checking for ELF binary format... no
checking for the common suffixes of directories in the library search path... lib,lib,lib
checking for CFPreferencesCopyAppValue... yes
checking for CFLocaleCopyPreferredLanguages... yes
checking whether to use NLS... no

System headers and functions:
checking for fcntl.h... yes
checking for limits.h... yes
checking for sys/time.h... yes
checking for immintrin.h... no
checking for cpuid.h... no
checking for _Bool... yes
checking for stdbool.h that conforms to C99... yes
checking for uint8_t... yes
checking for uint16_t... yes
checking for int32_t... yes
checking for uint32_t... yes
checking for int64_t... yes
checking for uint64_t... yes
checking for uintptr_t... yes
checking size of size_t... 8
checking for struct stat.st_atim.tv_nsec... no
checking for struct stat.st_atimespec.tv_nsec... yes
checking for struct stat.st_atimensec... no
checking for struct stat.st_uatime... no
checking for struct stat.st_atim.st__tim.tv_nsec... no
checking for special C compiler options needed for large files... no
checking for _FILE_OFFSET_BITS value needed for large files... no
checking whether byte ordering is bigendian... universal
checking if __attribute__((__constructor__)) can be used... yes
checking for getopt.h... yes
checking for getopt_long... yes
checking whether optreset is declared... yes
checking for futimens... no
checking for futimes... yes
checking for posix_fadvise... no
checking whether program_invocation_name is declared... no
checking if __builtin_bswap16/32/64 are supported... no
checking for byteswap.h... no
checking for sys/endian.h... no
checking for sys/byteorder.h... no
checking if unaligned memory access should be used... yes
checking if unsafe type punning should be used... no
checking if __builtin_assume_aligned is supported... no
checking for sys/param.h... yes
checking how to detect the amount of physical memory... sysctl
checking for sys/param.h... (cached) yes
checking how to detect the number of available CPU cores... sysctl
checking whether mbrtowc and mbstate_t are properly declared... yes
checking for wcwidth... yes
checking whether _mm_movemask_epi8 is declared... no
checking if _mm_clmulepi64_si128 is usable... no
checking for sys/capsicum.h... no
checking whether cap_rights_limit is declared... no
checking for pledge... no

GCC extensions:
checking whether the -Werror option is usable... yes
checking for simple visibility declarations... yes
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 accepts -Wall... yes
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 accepts -Wextra... yes
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 accepts -Wvla... no
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 accepts -Wc99-c11-compat... no
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 accepts -Wformat=2... yes
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 accepts -Winit-self... yes
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 accepts -Wmissing-include-dirs... yes
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 accepts -Wshift-overflow=2... no
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 accepts -Wstrict-overflow=3... yes
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 accepts -Walloc-zero... no
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 accepts -Wduplicated-cond... no
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 accepts -Wfloat-equal... yes
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 accepts -Wundef... yes
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 accepts -Wshadow... yes
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 accepts -Wpointer-arith... yes
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 accepts -Wbad-function-cast... yes
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 accepts -Wwrite-strings... yes
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 accepts -Wdate-time... no
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 accepts -Wsign-conversion... no
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 accepts -Wfloat-conversion... no
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 accepts -Wlogical-op... no
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 accepts -Waggregate-return... yes
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 accepts -Wstrict-prototypes... yes
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 accepts -Wold-style-definition... yes
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 accepts -Wmissing-prototypes... yes
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 accepts -Wmissing-declarations... yes
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 accepts -Wredundant-decls... yes
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 accepts -Wc99-compat... no
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 accepts -Wc11-extensions... no
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 accepts -Wc2x-compat... no
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 accepts -Wc2x-extensions... no
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 accepts -Wpre-c2x-compat... no
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 accepts -Warray-bounds-pointer-arithmetic... no
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 accepts -Wassign-enum... no
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 accepts -Wconditional-uninitialized... no
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 accepts -Wdocumentation... no
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 accepts -Wduplicate-enum... no
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 accepts -Wempty-translation-unit... no
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 accepts -Wflexible-array-extensions... no
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 accepts -Wmissing-variable-declarations... no
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 accepts -Wnewline-eof... yes
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 accepts -Wshift-sign-overflow... no
checking if /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 accepts -Wstring-conversion... no

checking that generated files are newer than configure... done
configure: creating ./config.status
config.status: creating Makefile
config.status: creating po/Makefile.in
config.status: creating lib/Makefile
config.status: creating src/Makefile
config.status: creating src/liblzma/Makefile
config.status: creating src/liblzma/api/Makefile
config.status: creating src/xz/Makefile
config.status: creating src/xzdec/Makefile
config.status: creating src/lzmainfo/Makefile
config.status: creating src/scripts/Makefile
config.status: creating tests/Makefile
config.status: creating debug/Makefile
config.status: creating src/scripts/xzdiff
config.status: creating src/scripts/xzgrep
config.status: creating src/scripts/xzmore
config.status: creating src/scripts/xzless
config.status: creating config.h
config.status: executing depfiles commands
config.status: executing libtool commands
config.status: executing po-directories commands
config.status: creating po/POTFILES
config.status: creating po/Makefile
--->  Building xz-bootstrap
Executing:  cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_archivers_xz/xz-bootstrap/work/xz-5.4.5" && /usr/bin/make -j6 -w all 
make: Entering directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_archivers_xz/xz-bootstrap/work/xz-5.4.5'
/usr/bin/make  all-recursive
make[1]: Entering directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_archivers_xz/xz-bootstrap/work/xz-5.4.5'
Making all in src
make[2]: Entering directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_archivers_xz/xz-bootstrap/work/xz-5.4.5/src'
Making all in liblzma
make[3]: Entering directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_archivers_xz/xz-bootstrap/work/xz-5.4.5/src/liblzma'
Making all in api
make[4]: Entering directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_archivers_xz/xz-bootstrap/work/xz-5.4.5/src/liblzma/api'
make[4]: Nothing to be done for `all'.
make[4]: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_archivers_xz/xz-bootstrap/work/xz-5.4.5/src/liblzma/api'
make[4]: Entering directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_archivers_xz/xz-bootstrap/work/xz-5.4.5/src/liblzma'
/bin/sh ../../libtool  --tag=CC   --mode=compile /Developer/usr/bin/llvm-gcc-4.2 -std=gnu99 -DHAVE_CONFIG_H -I. -I../..  -I../../src/liblzma/api -I../../src/liblzma/common -I../../src/liblzma/check -I../../src/liblzma/lz -I../../src/liblzma/rangecoder -I../../src/liblzma/lzma -I../../src/liblzma/delta -I../../src/liblzma/simple -I../../src/common -DTUKLIB_SYMBOL_PREFIX=lzma_ -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_archivers_xz/xz-bootstrap/work/xz-5.4.5/src/liblzma/check -I/opt/local/libexec/xz-bootstrap/include -pthread -fvisibility=hidden -Wall -Wextra -Wformat=2 -Winit-self -Wmissing-include-dirs -Wstrict-overflow=3 -Wfloat-equal -Wundef -Wshadow -Wpointer-arith -Wbad-function-cast -Wwrite-strings -Waggregate-return -Wstrict-prototypes -Wold-style-definition -Wmissing-prototypes -Wmissing-declarations -Wredundant-decls -Wnewline-eof -pipe -Os -arch ppc -arch ppc64 -c -o liblzma_la-tuklib_physmem.lo `test -f '../common/tuklib_physmem.c' || echo './'`../common/tuklib_physmem.c

This is arguably wrong, despite the build succeeding. Regular xz uses gcc-4.2.

On 10.6 when building for ppc it is similar: xz uses gcc-4.2, xz-bootstrap picks clang.

[ryandesign (Ryan Carsten Schmidt)]

This is presumably because the xz-bootstrap subport contains this line:

    compiler.whitelist      clang llvm-gcc-4.2 gcc-4.2 apple-gcc-4.2

Looks like python27-bootstrap does the same. This line was added in [e967bb1325decd8d0c05f2f37b27067f6d780eb3/macports-ports] to fix #58876.

If the build succeeds, I don't think I would call this a problem or change it. (If it's been working for years, why change it? Changing it might break something.)

[rmottola (Riccardo)]

Actually, it became an issue, see ​https://trac.macports.org/ticket/71215

[ryandesign (Ryan Carsten Schmidt)]

Ok. Josh, do you recall why you chose this order of compilers? Can llvm-gcc-4.2 be removed from the list of all the ports where this was added (xz, gettext, gperf, icu, ncurses, pkgconfig, python27, libiconv, libxml2) since it doesn't work for xz anymore?