replying to my earlier post with additional info ... man, i want to debug this ...
On Tue, 8 Nov 2016, Robert P. J. Day wrote: > following on my earlier post, here's the specific issue i'm > tackling. having found no existing OE recipe equivalent to a centos > "perl-RPM2" RPM, i wrote my own. here's the info about that RH RPM on > my fedora system, so i know what the final result should look like: > > $ rpm -ql perl-RPM2 > /usr/lib64/perl5/vendor_perl/RPM2.pm > /usr/lib64/perl5/vendor_perl/auto/RPM2 > /usr/lib64/perl5/vendor_perl/auto/RPM2/RPM2.so > /usr/share/doc/perl-RPM2 > /usr/share/doc/perl-RPM2/Changes > /usr/share/doc/perl-RPM2/README > /usr/share/man/man3/RPM2.3pm.gz > $ > > so, as before, track down the source at cpan: > > https://metacpan.org/pod/RPM2 > > and write a boilerplate recipe, "perl-rpm2", containing the following > line since it's an older style recipe: > > inherit cpan_build > > fetching works fine: > > $ bitbake -c fetchall perl-rpm2 > > but here's the problem: > > $ bitbake perl-rpm2 > > ... snip ... > > | DEBUG: Executing shell function do_compile > | Copying lib/RPM2.pm -> blib/lib/RPM2.pm > | lib/RPM2.xs -> lib/RPM2.c > | powerpc-poky-linux-gcc -m32 -mhard-float -mcpu=7400 -mno-spe > --sysroot=/home/rpjday/oe/builds/msm_qemuppc/tmp/sysroots/qemuppc > -I/home/rpjday/oe/builds/msm_qemuppc/tmp/sysroots/qemuppc/usr/lib/perl/5.22.1/CORE > -DVERSION="1.3" -DXS_VERSION="1.3" -fPIC -DRPM2_API=5004 > -I/home/rpjday/oe/builds/msm_qemuppc/tmp/sysroots/qemuppc/usr/include/rpm > -c -O2 -pipe -g -feliminate-unused-debug-types > -fdebug-prefix-map=/home/rpjday/oe/builds/msm_qemuppc/tmp/work/ppc7400-poky-linux/perl/5.22.1-r0=/usr/src/debug/perl/5.22.1-r0 > -fdebug-prefix-map=/home/rpjday/oe/builds/msm_qemuppc/tmp/sysroots/x86_64-linux= > -fdebug-prefix-map=/home/rpjday/oe/builds/msm_qemuppc/tmp/sysroots/qemuppc= > -DDEBIAN -D_REENTRANT -D_GNU_SOURCE -fwrapv -fno-strict-aliasing -pipe > -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -D_FORTIFY_SOURCE=2 -O2 > -pipe -g -feliminate-unused-debug-types > -fdebug-prefix-map=/home/rpjday/oe/builds/msm_qemuppc/tmp/work/ppc7400-poky-linux/perl-rpm2/1.3-r0=/usr/src/debug/perl-rpm2/1.3-r0 > -fdebug-prefix-map=/home/rpjday/oe/builds/msm_qemuppc/tmp/sysroots/x86_64-linux= > -fdebug-prefix-map=/home/rpjday/oe/builds/msm_qemuppc/tmp/sysroots/qemuppc= > -O2 -o lib/RPM2.o lib/RPM2.c > | In file included from > /home/rpjday/oe/builds/msm_qemuppc/tmp/sysroots/qemuppc/usr/include/rpm/rpmcli.h:9:0, > | from lib/RPM2.xs:3: > | > /home/rpjday/oe/builds/msm_qemuppc/tmp/sysroots/qemuppc/usr/include/rpm/rpmmacro.h: > In function 'rpmExpand': > | > /home/rpjday/oe/builds/msm_qemuppc/tmp/sysroots/qemuppc/usr/include/rpm/rpmmacro.h:249:2: > error: expected declaration specifiers before > 'RPM_GNUC_NULL_TERMINATED' > | RPM_GNUC_NULL_TERMINATED > | ^~~~~~~~~~~~~~~~~~~~~~~~ > | > /home/rpjday/oe/builds/msm_qemuppc/tmp/sysroots/qemuppc/usr/include/rpm/rpmmacro.h:260:2: > error: expected '=', ',', ';', 'asm' or '__attribute__' before > 'RPM_GNUC_NULL_TERMINATED' > | RPM_GNUC_NULL_TERMINATED > | ^~~~~~~~~~~~~~~~~~~~~~~~ > > ... big snip, lots more errors ... ok, here's my wildly-uneducated record of what is going on: first, unpacking and configuring perl-RPM2 source (and running XS processor) gives me the source file "lib/RPM2.c" (which is what is generating the first build error above), which includes the header file: #include <rpm/rpmcli.h> next, wander over to the qemuppc sysroot, to usr/include/rpm/, to check out that header file, which contains (among other things): #include <popt.h> #include <rpmmacro.h> <----- there #include <rpmtypes.h> #include <rpmtag.h> #include <rpmps.h> #include <rpmrc.h> #include <rpmfi.h> /* XXX rpmfileAttrs */ #include <rpmts.h> /* XXX rpmdepFlags * next, in the same directory, examine rpmmacro.h, which contains: #if defined(_MACRO_INTERNAL) #include <rpmiotypes.h> ... snip ... at this point, inclusion is now conditional on _MACRO_INTERNAL, so move on to rpmiotypes.h, which contains: #include <rpmutil.h> and finally visit that header file in the qemuppc sysroot to find: #if __GNUC__ >= 4 #define RPM_GNUC_NULL_TERMINATED __attribute__((__sentinel__)) #else #define RPM_GNUC_NULL_TERMINATED #endif where we find the definition of that macro. now, is it my imagination, or could a lot of this compile-time error be resolved by simply defining the macro "_MACRO_INTERNAL" for the build? and if so, what is the proper way to add that setting to the compile step for this recipe? would i use the standard EXTRA_* variables? or are there perl-specific variables one would use when build CPAN recipes? or am i totally off-track here? rday -- ======================================================================== Robert P. J. Day Ottawa, Ontario, CANADA http://crashcourse.ca Twitter: http://twitter.com/rpjday LinkedIn: http://ca.linkedin.com/in/rpjday ======================================================================== -- _______________________________________________ Openembedded-core mailing list [email protected] http://lists.openembedded.org/mailman/listinfo/openembedded-core
