To: perlbug@xxxxxxxx
Subject: h2ph inc_dirs fails to prepend gcc include search path, resulting in missing C standard headers on Linux
Reply-To: jvdias@xxxxxxxxxx
Message-Id: <5.8.7_3660_1130885631@jvdias>
This is a bug report for perl from jvdias@xxxxxxxxxx,
generated with the help of perlbug 1.35 running under perl v5.8.7.
-----------------------------------------------------------------
[Please enter your report here]
When building perl-5.8.7 on Linux, the standard C headers fail to
be converted into perl headers, resulting in missing include
dependencies.
The C standard headers, such as :
stddef.h syslimits.h stdarg.h float.h stdbool.h
fail to be converted into perl headers (.ph files) during
a build and install of perl-5.8.7 . Many system headers
include these headers, so many system headers are made
unusable with perl because of this problem.
This is because h2ph's inc_dirs() does not find the string
'Reading specs from' in gcc -v's output, when the gcc version
is >= 4. My gcc's -v option emits:
$ gcc -v
Using built-in specs.
Target: i386-redhat-linux
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --enable-shared --enable-threads=posix --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-libgcj-multifile --enable-languages=c,c++,objc,java,f95,ada --enable-java-awt=gtk --with-java-home=/usr/lib/jvm/java-1.4.2-gcj-1.4.2.0/jre --host=i386-redhat-linux
Thread model: posix
gcc version 4.0.1 20050727 (Red Hat 4.0.1-5)
$
gcc 4 understands the '-print-search-dirs' option:
$ gcc -print-search-dirs
install: /usr/lib/gcc/i386-redhat-linux/4.0.1/
...
Here's a patch which corrects h2ph.PL's inc_dirs() to pick up
gcc4's built-in header include path:
---
--- perl-5.8.7/utils/h2ph.PL.bz172236 2005-04-04 17:47:17.000000000 -0400
+++ perl-5.8.7/utils/h2ph.PL 2005-11-01 17:42:36.000000000 -0500
@@ -734,9 +734,15 @@
# non-GCC?) C compilers, but gcc uses an additional include directory.
sub inc_dirs
{
- my $from_gcc = `$Config{cc} -v 2>&1`;
- $from_gcc =~ s:^Reading specs from (.*?)/specs\b.*:$1/include:s;
-
+ my $from_gcc = `LC_ALL=C $Config{cc} -v 2>&1`;
+ if( !( $from_gcc =~ s:^Reading specs from (.*?)/specs\b.*:$1/include:s ) )
+ { # gcc-4+ :
+ $from_gcc = `LC_ALL=C $Config{cc} -print-search-dirs 2>&1`;
+ if ( !($from_gcc =~ s/^install:\s*([^\s]+[^\s\/])([\s\/]*).*$/$1\/include/s) )
+ {
+ $from_gcc = '';
+ };
+ };
length($from_gcc) ? ($from_gcc, $Config{usrinc}) : ($Config{usrinc});
}
---
[Please do not change anything below this line]
-----------------------------------------------------------------
---
Flags:
category=core
severity=low
---
This perlbug was built using Perl v5.8.7 in the Red Hat build system.
It is being executed now by Perl v5.8.7 - Tue Oct 25 19:39:19 EDT 2005.
Site configuration information for perl v5.8.7:
Configured by Red Hat, Inc. at Tue Oct 25 19:39:19 EDT 2005.
Summary of my perl5 (revision 5 version 8 subversion 7) configuration:
Platform:
osname=linux, osvers=2.6.13-1.1624_fc5, archname=i386-linux-thread-multi
uname='linux jvdias 2.6.13-1.1624_fc5 #1 mon oct 24 01:16:31 edt 2005 i686 i686 i386 gnulinux '
config_args='-des -Doptimize=-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m32 -march=i386 -mtune=pentium4 -fasynchronous-unwind-tables -Dversion=5.8.7 -Dmyhostname=localhost -Dperladmin=root@localhost -Dcc=gcc -Dcf_by=Red Hat, Inc. -Dinstallprefix=/usr -Dprefix=/usr -Darchname=i386-linux -Dvendorprefix=/usr -Dsiteprefix=/usr -Duseshrplib -Dusethreads -Duseithreads -Duselargefiles -Dd_dosuid -Dd_semctl_semun -Di_db -Ui_ndbm -Di_gdbm -Di_shadow -Di_syslog -Dman3ext=3pm -Duseperlio -Dinstallusrbinperl=n -Ubincompat5005 -Uversiononly -Dpager=/usr/bin/less -isr -Dd_gethostent_r_proto -Ud_endhostent_r_proto -Ud_sethostent_r_proto -Ud_endprotoent_r_proto -Ud_setprotoent_r_proto -Ud_endservent_r_proto -Ud_setservent_r_proto -Dinc_version_list=5.8.6 5.8.5 5.8.4 5.8.3 -Dscriptdir=/usr/bin'
hint=recommended, useposix=true, d_sigaction=define
usethreads=define use5005threads=undef useithreads=define usemultiplicity=define
useperlio=define d_sfio=undef uselargefiles=define usesocks=undef
use64bitint=undef use64bitall=undef uselongdouble=undef
usemymalloc=n, bincompat5005=undef
Compiler:
cc='gcc', ccflags ='-D_REENTRANT -D_GNU_SOURCE -DDEBUGGING -fno-strict-aliasing -pipe -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -I/usr/include/gdbm',
optimize='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m32 -march=i386 -mtune=pentium4 -fasynchronous-unwind-tables',
cppflags='-D_REENTRANT -D_GNU_SOURCE -DDEBUGGING -fno-strict-aliasing -pipe -I/usr/local/include -I/usr/include/gdbm'
ccversion='', gccversion='4.0.2 20051007 (Red Hat 4.0.2-3)', gccosandvers=''
intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=1234
d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=12
ivtype='long', ivsize=4, nvtype='double', nvsize=8, Off_t='off_t', lseeksize=8
alignbytes=4, prototype=define
Linker and Libraries:
ld='gcc', ldflags =' -L/usr/local/lib'
libpth=/usr/local/lib /lib /usr/lib
libs=-lresolv -lnsl -lgdbm -ldb -ldl -lm -lcrypt -lutil -lpthread -lc
perllibs=-lresolv -lnsl -ldl -lm -lcrypt -lutil -lpthread -lc
libc=/lib/libc-2.3.90.so, so=so, useshrplib=true, libperl=libperl.so
gnulibc_version='2.3.90'
Dynamic Linking:
dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E -Wl,-rpath,/usr/lib/perl5/5.8.7/i386-linux-thread-multi/CORE'
cccdlflags='-fPIC', lddlflags='-shared -L/usr/local/lib'
Locally applied patches:
---
@INC for perl v5.8.7:
/usr/lib/perl5/site_perl/5.8.7/i386-linux-thread-multi
/usr/lib/perl5/site_perl/5.8.6/i386-linux-thread-multi
/usr/lib/perl5/site_perl/5.8.5/i386-linux-thread-multi
/usr/lib/perl5/site_perl/5.8.4/i386-linux-thread-multi
/usr/lib/perl5/site_perl/5.8.3/i386-linux-thread-multi
/usr/lib/perl5/site_perl/5.8.7
/usr/lib/perl5/site_perl/5.8.6
/usr/lib/perl5/site_perl/5.8.5
/usr/lib/perl5/site_perl/5.8.4
/usr/lib/perl5/site_perl/5.8.3
/usr/lib/perl5/site_perl
/usr/lib/perl5/vendor_perl/5.8.7/i386-linux-thread-multi
/usr/lib/perl5/vendor_perl/5.8.6/i386-linux-thread-multi
/usr/lib/perl5/vendor_perl/5.8.5/i386-linux-thread-multi
/usr/lib/perl5/vendor_perl/5.8.4/i386-linux-thread-multi
/usr/lib/perl5/vendor_perl/5.8.3/i386-linux-thread-multi
/usr/lib/perl5/vendor_perl/5.8.7
/usr/lib/perl5/vendor_perl/5.8.6
/usr/lib/perl5/vendor_perl/5.8.5
/usr/lib/perl5/vendor_perl/5.8.4
/usr/lib/perl5/vendor_perl/5.8.3
/usr/lib/perl5/vendor_perl
/usr/lib/perl5/5.8.7/i386-linux-thread-multi
/usr/lib/perl5/5.8.7
.
---
Environment for perl v5.8.7:
HOME=/home/boston/jvdias
LANG=en_US.UTF-8
LANGUAGE (unset)
LD_LIBRARY_PATH (unset)
LOGDIR (unset)
PATH=/usr/kerberos/bin:/usr/local/bin:/usr/bin:/bin:/usr/X11R6/bin:/usr/games:/home/boston/jvdias/bin
PERL_BADLANG (unset)
SHELL=/bin/bash
