Re: size of executable - g95 vs gfortran42 - shared libs?
On Thu, Jun 05, 2008 at 04:07:23PM +0200, Kris Kennaway wrote: Anton Shterenlikht wrote: g95.out: libm.so.5 = /lib/libm.so.5 (0x280c5000) libc.so.7 = /lib/libc.so.7 (0x280db000) ^-- this one doesn't link to a dynamic fortran library, so it is presumably statically linked, explaining the size. Look into how the file was constructed (e.g. the command used to link the binary). Kris, many thanks. I have confirmed this with Andy Vaught (g95 main developer). -- Anton Shterenlikht Room 2.6, Queen's Building Mech Eng Dept Bristol University University Walk, Bristol BS8 1TR, UK Tel: +44 (0)117 928 8233 Fax: +44 (0)117 929 4423 ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
size of executable - g95 vs gfortran42 - shared libs?
I use two different fortran90 compiler on a simple input file and get executables which differ in size by almost 3 orders of magnitude, see below. Is this something to do with the use of shared libraries? % gfortran42 tmp.f90 % ls -al a.out -rwxr-xr-x 1 xxx zzz9179 5 Jun 14:15 a.out % g95 tmp.f90 % ls -al a.out -rwxr-xr-x 1 xxx zzz 546413 5 Jun 14:15 a.out % The program results seem to be identical. many thanks anton -- Anton Shterenlikht Room 2.6, Queen's Building Mech Eng Dept Bristol University University Walk, Bristol BS8 1TR, UK Tel: +44 (0)117 928 8233 Fax: +44 (0)117 929 4423 ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
RE: size of executable - g95 vs gfortran42 - shared libs?
-Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Anton Shterenlikht Sent: Thursday, June 05, 2008 7:21 AM To: freebsd-questions@freebsd.org Subject: size of executable - g95 vs gfortran42 - shared libs? I use two different fortran90 compiler on a simple input file and get executables which differ in size by almost 3 orders of magnitude, see below. Is this something to do with the use of shared libraries? % gfortran42 tmp.f90 % ls -al a.out -rwxr-xr-x 1 xxx zzz9179 5 Jun 14:15 a.out % g95 tmp.f90 % ls -al a.out -rwxr-xr-x 1 xxx zzz 546413 5 Jun 14:15 a.out % The program results seem to be identical. many thanks anton Run file and ldd on the executables to see the difference: [EMAIL PROTECTED] ~]# file `which ls` /bin/ls: ELF 32-bit LSB executable, Intel 80386, version 1 (FreeBSD), for FreeBSD 8.0 (800038), dynamically linked (uses shared libs), FreeBSD-style, stripped [EMAIL PROTECTED] ~]# ldd `which ls` /bin/ls: libutil.so.7 = /lib/libutil.so.7 (0x28082000) libncurses.so.7 = /lib/libncurses.so.7 (0x2809) libc.so.7 = /lib/libc.so.7 (0x280cf000) [EMAIL PROTECTED] ~]# Hope this helps Tobias ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: size of executable - g95 vs gfortran42 - shared libs?
Anton Shterenlikht wrote: I use two different fortran90 compiler on a simple input file and get executables which differ in size by almost 3 orders of magnitude, see below. Is this something to do with the use of shared libraries? You tell us :) What does file tell you? Kris % gfortran42 tmp.f90 % ls -al a.out -rwxr-xr-x 1 xxx zzz9179 5 Jun 14:15 a.out % g95 tmp.f90 % ls -al a.out -rwxr-xr-x 1 xxx zzz 546413 5 Jun 14:15 a.out % The program results seem to be identical. many thanks anton ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: size of executable - g95 vs gfortran42 - shared libs?
On Thu, Jun 05, 2008 at 06:29:35AM -0700, Tobias Hoellrich wrote: I use two different fortran90 compiler on a simple input file and get executables which differ in size by almost 3 orders of magnitude, see below. Is this something to do with the use of shared libraries? Run file and ldd on the executables to see the difference: [EMAIL PROTECTED] ~]# file `which ls` /bin/ls: ELF 32-bit LSB executable, Intel 80386, version 1 (FreeBSD), for FreeBSD 8.0 (800038), dynamically linked (uses shared libs), FreeBSD-style, stripped [EMAIL PROTECTED] ~]# ldd `which ls` /bin/ls: libutil.so.7 = /lib/libutil.so.7 (0x28082000) libncurses.so.7 = /lib/libncurses.so.7 (0x2809) libc.so.7 = /lib/libc.so.7 (0x280cf000) [EMAIL PROTECTED] ~]# Many thanks, the ldd resuts differ, but how does this translate into size? % ls -al *out -rwxr-xr-x 1 mexas wheel 546413 5 Jun 14:39 g95.out -rwxr-xr-x 1 mexas wheel9179 5 Jun 14:39 gf42.out % file *out g95.out: ELF 32-bit LSB executable, Intel 80386, version 1 (FreeBSD), for FreeBSD 7.0 (700109), dynamically linked (uses shared libs), FreeBSD-style, not stripped gf42.out: ELF 32-bit LSB executable, Intel 80386, version 1 (FreeBSD), for FreeBSD 7.0 (700109), dynamically linked (uses shared libs), FreeBSD-style, not stripped % ldd *.out g95.out: libm.so.5 = /lib/libm.so.5 (0x280c5000) libc.so.7 = /lib/libc.so.7 (0x280db000) gf42.out: libgfortran.so.2 = /usr/local/lib/gcc-4.2.4/libgfortran.so.2 (0x2807e000) libm.so.5 = /lib/libm.so.5 (0x28103000) libgcc_s.so.1 = /lib/libgcc_s.so.1 (0x28119000) libc.so.7 = /lib/libc.so.7 (0x28124000) % -- Anton Shterenlikht Room 2.6, Queen's Building Mech Eng Dept Bristol University University Walk, Bristol BS8 1TR, UK Tel: +44 (0)117 928 8233 Fax: +44 (0)117 929 4423 ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: size of executable - g95 vs gfortran42 - shared libs?
% ldd *.out g95.out: libm.so.5 = /lib/libm.so.5 (0x280c5000) libc.so.7 = /lib/libc.so.7 (0x280db000) gf42.out: libgfortran.so.2 = /usr/local/lib/gcc-4.2.4/libgfortran.so.2 (0x2807e000) libm.so.5 = /lib/libm.so.5 (0x28103000) libgcc_s.so.1 = /lib/libgcc_s.so.1 (0x28119000) libc.so.7 = /lib/libc.so.7 (0x28124000) % In the first one the library fortran is directly included in your exec file, so the file is bigger. It looks like you have only a static version of the g95 installed, and then the library is included in the final program ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: size of executable - g95 vs gfortran42 - shared libs?
Anton Shterenlikht wrote: On Thu, Jun 05, 2008 at 06:29:35AM -0700, Tobias Hoellrich wrote: I use two different fortran90 compiler on a simple input file and get executables which differ in size by almost 3 orders of magnitude, see below. Is this something to do with the use of shared libraries? Run file and ldd on the executables to see the difference: [EMAIL PROTECTED] ~]# file `which ls` /bin/ls: ELF 32-bit LSB executable, Intel 80386, version 1 (FreeBSD), for FreeBSD 8.0 (800038), dynamically linked (uses shared libs), FreeBSD-style, stripped [EMAIL PROTECTED] ~]# ldd `which ls` /bin/ls: libutil.so.7 = /lib/libutil.so.7 (0x28082000) libncurses.so.7 = /lib/libncurses.so.7 (0x2809) libc.so.7 = /lib/libc.so.7 (0x280cf000) [EMAIL PROTECTED] ~]# Many thanks, the ldd resuts differ, but how does this translate into size? % ls -al *out -rwxr-xr-x 1 mexas wheel 546413 5 Jun 14:39 g95.out -rwxr-xr-x 1 mexas wheel9179 5 Jun 14:39 gf42.out % file *out g95.out: ELF 32-bit LSB executable, Intel 80386, version 1 (FreeBSD), for FreeBSD 7.0 (700109), dynamically linked (uses shared libs), FreeBSD-style, not stripped gf42.out: ELF 32-bit LSB executable, Intel 80386, version 1 (FreeBSD), for FreeBSD 7.0 (700109), dynamically linked (uses shared libs), FreeBSD-style, not stripped Both files have debugging symbols enabled. You can remove these with strip, at the cost of not being able to use gdb to obtain backtraces if you run into a bug. % ldd *.out g95.out: libm.so.5 = /lib/libm.so.5 (0x280c5000) libc.so.7 = /lib/libc.so.7 (0x280db000) ^-- this one doesn't link to a dynamic fortran library, so it is presumably statically linked, explaining the size. Look into how the file was constructed (e.g. the command used to link the binary). gf42.out: libgfortran.so.2 = /usr/local/lib/gcc-4.2.4/libgfortran.so.2 (0x2807e000) libm.so.5 = /lib/libm.so.5 (0x28103000) libgcc_s.so.1 = /lib/libgcc_s.so.1 (0x28119000) libc.so.7 = /lib/libc.so.7 (0x28124000) % Kris ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
