Hello I'm using openembedded to cross-compile php. My application depends on the dl function. If i cross compile php with the buildsystem of openembedded. phpinfo() writes "Dynamic Library support not available". If I compile php native inside the openembedded target the dymamic library support is enabled.
I could not find the reason why the cross compiled version has a brocken dl support. How does the configure script determine if "Dynamic Library support" is available for a specific platform? Are there any other output files of the autotools which are helpful to analyse the problem? The openembedded buildsystem executes the configure script with the following paramters (which leads to a brocken dl support ) ./configure --build=i686-linux --host=i486-angstrom-linux --target=i486-angstrom-linux --prefix=/usr --exec_prefix=/usr --bindir=/usr/bin --sbindir=/usr/sbin --libexecdir=/usr/libexec --datadir=/usr/share --sysconfdir=/etc --sharedstatedir=/com --localstatedir=/var --libdir=/usr/lib --includedir=/usr/include --oldincludedir=/usr/include --infodir=/usr/share/info --mandir=/usr/share/man --without-iconv --enable-discard-path --enable-sockets --enable-pcntl --enable-wddx --enable-embedded-mysqli --enable-magic-quotes --enable-fastcgi --with-zlib --with-zlib-dir=/stuff/output/x86/vmware/staging/i486-angstrom-linux/usr/lib/.. --with-libxml-dir=/stuff/output/x86/vmware/staging/i686-linux/usr/bin/i486-angstrom-linux --enable-shared This leads to the following output: configure: loading site script /stuff/openembedded/site/endian-little configure: loading site script /stuff/openembedded/site/common-linux configure: loading site script /stuff/openembedded/site/common-glibc configure: loading site script /stuff/openembedded/site/ix86-common configure: loading site script /stuff/openembedded/site/common configure: loading site script /stuff/openembedded/site/common checking for grep that handles long lines and -e... /stuff/output/x86/vmware/staging/i686-linux/usr/bin/grep checking for egrep... /stuff/output/x86/vmware/staging/i686-linux/usr/bin/grep -E checking for a sed that does not truncate output... /bin/sed checking build system type... i686-pc-linux-gnu checking host system type... i486-angstrom-linux-gnu checking target system type... i486-angstrom-linux-gnu checking for i486-angstrom-linux-gcc... i486-angstrom-linux-gcc -march=i486 checking for C compiler default output file name... a.out checking whether the C compiler works... yes checking whether we are cross compiling... yes checking for suffix of executables... checking for suffix of object files... o checking whether we are using the GNU C compiler... yes checking whether i486-angstrom-linux-gcc -march=i486 accepts -g... yes checking for i486-angstrom-linux-gcc -march=i486 option to accept ISO C89... none needed checking how to run the C preprocessor... i486-angstrom-linux-gcc -E checking for icc... no checking whether i486-angstrom-linux-gcc -march=i486 and cc understand -c and -o together... yes checking how to run the C preprocessor... i486-angstrom-linux-gcc -E checking for ANSI C header files... yes checking for sys/types.h... yes checking for sys/stat.h... yes checking for stdlib.h... yes checking for string.h... yes checking for memory.h... yes checking for strings.h... yes checking for inttypes.h... yes checking for stdint.h... yes checking for unistd.h... yes checking minix/config.h usability... no checking minix/config.h presence... no checking for minix/config.h... no checking whether it is safe to define __EXTENSIONS__... yes checking whether ln -s works... yes checking for system library directory... lib checking whether to enable runpaths... yes checking if compiler supports -R... no checking if compiler supports -Wl,-rpath,... yes checking for re2c... no configure: WARNING: You will need re2c 0.12.0 or later if you want to regenerate PHP parsers. checking for gawk... gawk checking for bison... bison -y checking for bison version... 2.3 (ok) checking for flex... flex checking lex output file root... lex.yy checking lex library... -lfl checking whether yytext is a pointer... yes checking for an ANSI C-conforming const... yes checking for flex version... invalid configure: WARNING: flex versions supported for regeneration of the Zend/PHP parsers: 2.5.4 (found: 2.5.31) checking whether to force non-PIC code in shared modules... yes checking whether /dev/urandom exists... yes checking for pthreads_cflags... checking for pthreads_lib... 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(cached) yes checking for strlcat... no checking for strlcpy... no checking for getopt... yes checking for utime.h... (cached) yes checking whether utime accepts a null argument... no checking for working alloca.h... yes checking for alloca... yes checking for declared timezone... yes checking for type of reentrant time-related functions... POSIX checking for readdir_r... yes checking for type of readdir_r... none checking for in_addr_t... yes checking for crypt_r... no [1mGeneral settings[m checking whether to include gcov symbols... no checking whether to include debugging symbols... no checking layout of installed files... PHP checking path to configuration file... DEFAULT checking where to scan for configuration files... checking whether to enable safe mode by default... no checking for safe mode exec dir... /usr/local/php/bin checking whether to enable PHP's own SIGCHLD handler... no checking whether to enable magic quotes by default... yes checking whether to explicitly link against libgcc... no checking whether to enable short tags by default... yes checking whether to enable dmalloc... no checking whether to enable IPv6 support... yes checking how big to make fd sets... using system default [1mConfiguring extensions[m checking whether to enable LIBXML support... yes checking libxml2 install dir... /stuff/output/x86/vmware/staging/i686-linux/usr/bin/i486-angstrom-linux checking for xml2-config path... /stuff/output/x86/vmware/staging/i686-linux/usr/bin/i486-angstrom-linux/xml2-config checking whether libxml build works... checking for OpenSSL support... no checking for Kerberos support... no checking for PCRE support... yes checking for ZLIB support... yes checking if the location of ZLIB install directory is defined... /stuff/output/x86/vmware/staging/i486-angstrom-linux/usr/lib/.. checking for gzgets in -lz... yes checking whether to enable bc style precision math functions... no checking for BZip2 support... no checking whether to enable calendar conversion support... no checking whether to enable ctype functions... yes checking for cURL support... no checking if we should use cURL for url streams... no checking size of long... (cached) 4 checking size of int... (cached) 4 checking for int32_t... yes checking for uint32_t... yes checking for sys/types.h... (cached) yes checking for inttypes.h... (cached) yes checking for stdint.h... (cached) yes checking for string.h... (cached) yes checking for stdlib.h... (cached) yes checking for strtoll... yes checking for atoll... yes checking for strftime... (cached) yes checking for QDBM support... no checking for GDBM support... no checking for NDBM support... no checking for Berkeley DB4 support... no checking for Berkeley DB3 support... no checking for Berkeley DB2 support... no checking for DB1 support... no checking for DBM support... no checking for CDB support... no checking for INI File support... no checking for FlatFile support... no checking whether to enable DBA interface... no checking whether to enable dbase support... no checking whether to enable DOM support... yes checking for xml2-config path... (cached) /stuff/output/x86/vmware/staging/i686-linux/usr/bin/i486-angstrom-linux/xml2-config checking whether libxml build works... checking whether to enable EXIF (metadata from images) support... no checking for FrontBase SQL92 (fbsql) support... no checking for FDF support... no checking whether to enable input filter support... yes checking pcre install prefix... no checking whether to enable FTP support... no checking OpenSSL dir for FTP... no checking for GD support... no checking for the location of libjpeg... no checking for the location of libpng... no checking for the location of libXpm... no checking for FreeType 1.x support... no checking for FreeType 2... no checking for T1lib support... no checking whether to enable truetype string function in GD... no checking whether to enable JIS-mapped Japanese font support in GD... no checking for GNU gettext support... no checking for GNU MP support... no checking whether to enable hash support... yes checking whether byte ordering is bigendian... (cached) unknown checking size of short... (cached) 2 checking size of int... (cached) 4 checking size of long... (cached) 4 checking size of long long... (cached) 8 checking for iconv support... no checking for IMAP support... no checking for IMAP Kerberos support... no checking for IMAP SSL support... no checking for InterBase support... no checking whether to enable JavaScript Object Serialization support... yes checking for ANSI C header files... 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(cached) 4 checking for usleep... (cached) yes checking for nanosleep... (cached) yes checking time.h usability... yes checking time.h presence... yes checking for time.h... yes checking for fdatasync in -lrt... yes checking for PostgreSQL support... no checking whether to enable POSIX-like functions... yes checking sys/mkdev.h usability... no checking sys/mkdev.h presence... no checking for sys/mkdev.h... no checking for seteuid... yes checking for setegid... yes checking for setsid... yes checking for getsid... yes checking for setpgid... (cached) yes checking for getpgid... yes checking for ctermid... yes checking for mkfifo... yes checking for mknod... yes checking for getrlimit... yes checking for getlogin... (cached) yes checking for getgroups... yes checking for makedev... no checking for initgroups... yes checking for getpwuid_r... 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(cached) yes checking whether flush should be called explicitly after a buffered io... no checking for crypt in -lcrypt... yes checking for standard DES crypt... yes checking for extended DES crypt... no checking for MD5 crypt... no checking for Blowfish crypt... no checking for getcwd... yes checking for getwd... yes checking for asinh... yes checking for acosh... yes checking for atanh... yes checking for log1p... yes checking for hypot... yes checking for glob... yes checking for strfmon... yes checking for nice... yes checking for fpclass... no checking for isinf... yes checking for isnan... yes checking for working POSIX fnmatch... (cached) yes checking which regex library to use... php checking whether rounding works as expected... cross compile checking for fork... 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(cached) /stuff/output/x86/vmware/staging/i686-linux/usr/bin/i486-angstrom-linux/xml2-config checking whether libxml build works... checking for XSL support... no checking for zip archive read/writesupport... no [1mConfiguring PEAR[m checking whether to install PEAR... yes [1mConfiguring Zend[m checking for bison version... (cached) 2.3 (ok) checking for inttypes.h... (cached) yes checking for stdint.h... (cached) yes checking for limits.h... (cached) yes checking malloc.h usability... yes checking malloc.h presence... yes checking for malloc.h... yes checking for string.h... (cached) yes checking for unistd.h... (cached) yes checking for stdarg.h... (cached) yes checking for sys/types.h... (cached) yes checking for sys/time.h... (cached) yes checking for signal.h... (cached) yes checking for unix.h... (cached) no checking for stdlib.h... (cached) yes checking for mach-o/dyld.h... (cached) no checking for dlfcn.h... (cached) yes checking for size_t... (cached) yes checking return type of signal handlers... void checking for uint... yes checking for ulong... yes checking for int32_t... yes checking for uint32_t... yes checking for vprintf... (cached) yes checking for _doprnt... (cached) no checking for working memcmp... (cached) yes checking for working alloca.h... (cached) yes checking for alloca... (cached) yes checking for memcpy... (cached) yes checking for strdup... (cached) yes checking for getpid... yes checking for kill... yes checking for strtod... yes checking for strtol... yes checking for finite... yes checking for fpclass... (cached) no checking whether sprintf is broken... no checking for finite... (cached) yes checking for isfinite... no checking for isinf... (cached) yes checking for isnan... (cached) yes checking whether fp_except is defined... no checking whether dlsym() requires a leading underscore in symbol names... checking virtual machine dispatch method... CALL checking whether to enable thread-safety... no checking whether to enable inline optimization for GCC... yes checking whether to enable Zend debugging... no checking whether to enable Zend multibyte... no checking for inline... inline checking target system is Darwin... no checking for MM alignment and log values... done checking for memory allocation using mmap(MAP_ANON)... no checking for memory allocation using mmap("/dev/zero")... no checking for mremap... yes [1mConfiguring TSRM[m checking for stdarg.h... (cached) yes [1mConfiguring libtool[m checking for a sed that does not truncate output... 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BSD nm checking the maximum length of command line arguments... 1966080 checking whether the shell understands some XSI constructs... yes checking whether the shell understands "+="... yes checking for i486-angstrom-linux-ld option to reload object files... -r checking for i486-angstrom-linux-objdump... i486-angstrom-linux-objdump checking how to recognize dependent libraries... pass_all checking for i486-angstrom-linux-ar... i486-angstrom-linux-ar checking for i486-angstrom-linux-strip... i486-angstrom-linux-strip checking for i486-angstrom-linux-ranlib... i486-angstrom-linux-ranlib checking command to parse i486-angstrom-linux-nm output from i486-angstrom-linux-gcc -march=i486 object... ok checking for dlfcn.h... (cached) yes checking for objdir... .libs checking if i486-angstrom-linux-gcc -march=i486 supports -fno-rtti -fno-exceptions... no checking for i486-angstrom-linux-gcc -march=i486 option to produce PIC... -fPIC -DPIC checking if i486-angstrom-linux-gcc -march=i486 PIC flag -fPIC -DPIC works... yes checking if i486-angstrom-linux-gcc -march=i486 static flag -static works... yes checking if i486-angstrom-linux-gcc -march=i486 supports -c -o file.o... yes checking if i486-angstrom-linux-gcc -march=i486 supports -c -o file.o... (cached) yes checking whether the i486-angstrom-linux-gcc -march=i486 linker (i486-angstrom-linux-ld) supports shared libraries... yes checking dynamic linker characteristics... GNU/Linux ld.so 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... no checking whether to build static libraries... yes [1mGenerating files[m configure: creating ./config.status creating main/internal_functions.c creating main/internal_functions_cli.c +--------------------------------------------------------------------+ | License: | | This software is subject to the PHP License, available in this | | distribution in the file LICENSE. By continuing this installation | | process, you are bound by the terms of this license agreement. | | If you do not agree with the terms of this license, you must abort | | the installation process at this point. | +--------------------------------------------------------------------+ Thank you for using PHP. config.status: creating php5.spec config.status: creating main/build-defs.h config.status: creating scripts/phpize config.status: creating scripts/man1/phpize.1 config.status: creating scripts/php-config config.status: creating scripts/man1/php-config.1 config.status: creating sapi/cli/php.1 config.status: creating main/php_config.h config.status: executing libtool commands config.status: executing default commands thanks for your help Martin