#42374 [Asn]: --as-needed causes configure failures

ID: 42374 User updated by: galtgendo at o2 dot pl Reported By: galtgendo at o2 dot pl Status: Assigned Bug Type: Feature/Change Request Operating System: Gentoo PHP Version: 5.2CVS-2007-08-23 Assigned To: jani New Comment: OK, I did some more reading on autotools. A quote from autoconf info page: -- Variable: LDFLAGS ... This variable's contents should contain options like `-s' and `-L' that affect only the behavior of the linker. ... Don't use this variable to pass library names (`-l') to the linker; use `LIBS' instead. So title of this bug should be something along the lines of: 'rewrite your macros to conform to specs instead of simply work' While doing that it may be a good idea to split all those libraries into groups, so every extension (and php itself) doesn't get linked with every libs needed for other extentions. Previous Comments: ------------------------------------------------------------------------ [2007-11-06 12:26:45] galtgendo at o2 dot pl Please disregard most of my last comment, I misunderstood something. I thought that --as-needed prevents linking with unused libraries, but it only marks them as unused, so above listings of ldd -u mean that it actually works, not the opposite. Anyway, what was exactly the problem that --preserve-dup-defs works around, cause the note in configure.in says only that there was a problem with older libtool, not what was it ? ------------------------------------------------------------------------ [2007-11-05 22:49:15] galtgendo at o2 dot pl There's a funny thing, though. Command that built in example tidy.so was : /bin/sh /var/tmp/portage/dev-lang/php-5.2.4_p20070914-r2/work/php-5.2.4_p2007091 4/libtool --silent --preserve-dup-deps --mode=link /var/tmp/portage/dev-lang/php -5.2.4_p20070914-r2/work/php-5.2.4_p20070914/meta_ccld -DPHP_ATOM_INC -I/var/tmp /portage/dev-lang/php-5.2.4_p20070914-r2/work/php-5.2.4_p20070914/include -I/var /tmp/portage/dev-lang/php-5.2.4_p20070914-r2/work/php-5.2.4_p20070914/main -I/va r/tmp/portage/dev-lang/php-5.2.4_p20070914-r2/work/php-5.2.4_p20070914 -I/usr/in clude/libxml2 -I/var/tmp/portage/dev-lang/php-5.2.4_p20070914-r2/work/php-5.2.4_ p20070914/ext/date/lib -I/usr/include/freetype2 -I/usr/include/imap -I/var/tmp/p ortage/dev-lang/php-5.2.4_p20070914-r2/work/php-5.2.4_p20070914/ext/mbstring/oni guruma -I/var/tmp/portage/dev-lang/php-5.2.4_p20070914-r2/work/php-5.2.4_p200709 14/ext/mbstring/libmbfl -I/var/tmp/portage/dev-lang/php-5.2.4_p20070914-r2/work/ php-5.2.4_p20070914/ext/mbstring/libmbfl/mbfl -I/usr/include/mysql -I/usr/includ e/postgresql/libpq-4 -I/usr/include/pspell -I/var/tmp/portage/dev-lang/php-5.2.4 _p20070914-r2/work/php-5.2.4_p20070914/TSRM -I/var/tmp/portage/dev-lang/php-5.2.4_p20070914-r2/work/php-5.2.4_p20070914/Zend -D_REENTRANT -I/usr/include -O2 -march=athlon -mtune=athlon -pipe -pthread -DZTS -Wl,-O1 -Wl,--as-needed -Wl,--sort-common -Wl,-z,relro -o ext/tidy/tidy.la -export-dynamic -avoid-version -prefer-pic -module -rpath /var/tmp/portage/dev-lang/php-5.2.4_p20070914-r2/work/php-5.2.4_p20070914/modules -avoid-version -module ext/tidy/tidy.lo -ltidy -lcrypt -lcrypt -lsqlite -lhistory -lreadline -lncurses -lresolv -lm -ldl -lnsl -lxml2 -lz -lm -lgssapi -lkrb5 -lcom_err -lssl -lcrypto -ldl -lxml2 -lz -lm -lxml2 -lz -lm -lcrypt -lxml2 -lz -lm -lxml2 -lz -lm -lxml2 -lz -lm -lcrypt so theoretically it should not have those dependencies, unless --preserve-dup-deps messes that up. I think I'll test this theory. Of course, this is a completely separate issue to the one this bug is about. ------------------------------------------------------------------------ [2007-11-05 21:39:39] galtgendo at o2 dot pl This may seem like nagging, but I wonder how are things comming along. And to add my 2c: ldd -u /usr/lib/php5/lib/php/extensions/no-debug-zts-20060613/tidy.so Unused direct dependencies: /usr/lib/libtidy-0.99.so.0 /lib/libcrypt.so.1 /usr/lib/libsqlite.so.0 /lib/libhistory.so.5 /lib/libreadline.so.5 /lib/libncurses.so.5 /lib/libresolv.so.2 /lib/libm.so.6 /lib/libdl.so.2 /lib/libnsl.so.1 /lib/libz.so.1 libgssapi.so.1 /usr/lib/libkrb5.so.22 /lib/libcom_err.so.2 /usr/lib/libssl.so.0.9.8 /usr/lib/libcrypto.so.0.9.8 /usr/lib/libxml2.so.2 /lib/libpthread.so.0 ldd -u /usr/lib/php5/lib/php/extensions/no-debug-zts-20060613/zlib.so Unused direct dependencies: /lib/libz.so.1 /lib/libcrypt.so.1 /usr/lib/libsqlite.so.0 /lib/libhistory.so.5 /lib/libreadline.so.5 /lib/libncurses.so.5 /lib/libresolv.so.2 /lib/libm.so.6 /lib/libdl.so.2 /lib/libnsl.so.1 libgssapi.so.1 /usr/lib/libkrb5.so.22 /lib/libcom_err.so.2 /usr/lib/libssl.so.0.9.8 /usr/lib/libcrypto.so.0.9.8 /usr/lib/libxml2.so.2 /lib/libpthread.so.0 And for comparison: ldd -u /usr/lib/php5/lib/php/extensions/no-debug-zts-20060613/gd.so Unused direct dependencies: /usr/lib/libfreetype.so.6 /lib/libcrypt.so.1 /usr/lib/libsqlite.so.0 /lib/libhistory.so.5 /lib/libreadline.so.5 /lib/libncurses.so.5 /lib/libresolv.so.2 /lib/libm.so.6 /lib/libdl.so.2 /lib/libnsl.so.1 /lib/libz.so.1 libgssapi.so.1 /usr/lib/libkrb5.so.22 /lib/libcom_err.so.2 /usr/lib/libssl.so.0.9.8 /usr/lib/libcrypto.so.0.9.8 /usr/lib/libxml2.so.2 /lib/libpthread.so.0 ldd -u /usr/bin/php Unused direct dependencies: /lib/libcrypt.so.1 /usr/lib/libsqlite.so.0 /lib/libhistory.so.5 /lib/libm.so.6 /lib/libdl.so.2 /usr/lib/libroken.so.18 /lib/libresolv.so.2 /lib/libpthread.so.0 /usr/lib/libssl.so.0.9.8 ------------------------------------------------------------------------ [2007-08-24 07:44:54] jani@php.net And we're not trying to fix the faulty 3rd party libraries here, are we? :) ------------------------------------------------------------------------ [2007-08-24 03:11:40] crrodriguez at suse dot de >a) it seems to be experimental yes, but it usually work. >b) might cause problems in dynamic loading such as our shared >extensions, f.e. php -> pdo -> pdo driver (haven't tested yet :) I have tested it with some extensions and seem to work fine, except that the IMAP extension does not compile because configure checks fail for the same reason the reporter is showing here. >d) PHP build system does not link with anything else than what is >actually needed anyway (AFAIK) ldd -u -r /usr/bin/php Unused direct dependencies: /lib/libnsl.so.1 /lib/libz.so.1 ldd -u -r xmlreader.so /lib/libz.so.1 /lib/libm.so.6 dom.so Unused direct dependencies: /lib/libz.so.1 /lib/libm.so.6 gd.so Unused direct dependencies: /usr/lib/libX11.so.6 although in most cases the guilty stuff is "foobar_config" scripts or pkgconfig scripts that inject "uneeded" dependencies (uneeded at least on linux) ------------------------------------------------------------------------ The remainder of the comments for this report are too long. 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