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Subjecthfmodem compile deaths [2.2.18pre15 / CONFIG_HFMODEM]
FYI

Dunno how to fix, but using the attached minimal .config,
2.2.18pre15 compiles die when CONFIG_HFMODEM=y.

The deaths differ depending on the compiler used.


Using gcc version 2.95.2:
=========================
make[3]: Entering directory `/tmp/linux/drivers/char/hfmodem'
cc -D__KERNEL__ -I/tmp/linux/include -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer -fno-strict-aliasing -pipe -fno-strength-reduce -m486 -malign-loops=2 -malign-jumps=2 -malign-functions=2 -DCPU=686 -c -o refclock.o refclock.c
refclock.c: In function `hfmodem_refclock_current':
refclock.c:136: Invalid `asm' statement:
VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
refclock.c:136: fixed or forbidden register 0 (ax) was spilled for class AREG.
make[3]: *** [refclock.o] Error 1
make[3]: Leaving directory `/tmp/linux/drivers/char/hfmodem'
make[2]: *** [_subdir_hfmodem] Error 2
make[2]: Leaving directory `/tmp/linux/drivers/char'
make[1]: *** [_subdir_char] Error 2
make[1]: Leaving directory `/tmp/linux/drivers'
make: *** [_dir_drivers] Error 2



Using egcs-2.91.66:
===================
make[1]: Leaving directory `/autobuild/tmp/linux/arch/i386/lib'
cc -D__KERNEL__ -I/autobuild/tmp/linux/include -E -C -P -I/autobuild/tmp/linux/include -imacros /autobuild/tmp/linux/include/asm-i386/page_offset.h -Ui386 arch/i386/vmlinux.lds.S >arch/i386/vmlinux.lds
ld -m elf_i386 -T /autobuild/tmp/linux/arch/i386/vmlinux.lds -e stext arch/i386/kernel/head.o arch/i386/kernel/init_task.o init/main.o init/version.o \
--start-group \
arch/i386/kernel/kernel.o arch/i386/mm/mm.o kernel/kernel.o mm/mm.o fs/fs.o ipc/ipc.o \
fs/filesystems.a \
net/network.a \
drivers/block/block.a drivers/char/char.o drivers/misc/misc.a drivers/net/net.a drivers/net/hamradio/hamradio.a \
/autobuild/tmp/linux/arch/i386/lib/lib.a /autobuild/tmp/linux/lib/lib.a /autobuild/tmp/linux/arch/i386/lib/lib.a \
--end-group \
-o vmlinux
drivers/char/char.o: In function `hfmodem_setup':
VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
drivers/char/char.o(.text.init+0x880): undefined reference to `hfmodem_refclock_setscale'
make: *** [vmlinux] Error 1


[ and indeed, hfmodem_refclock_setscale is nowhere defined in the source ]
#
# Automatically generated make config: don't edit
#

#
# Code maturity level options
#
# CONFIG_EXPERIMENTAL is not set

#
# Processor type and features
#
# CONFIG_M386 is not set
# CONFIG_M486 is not set
# CONFIG_M586 is not set
# CONFIG_M586TSC is not set
CONFIG_M686=y
CONFIG_X86_WP_WORKS_OK=y
CONFIG_X86_INVLPG=y
CONFIG_X86_BSWAP=y
CONFIG_X86_POPAD_OK=y
CONFIG_X86_TSC=y
CONFIG_X86_GOOD_APIC=y
# CONFIG_MICROCODE is not set
# CONFIG_X86_MSR is not set
# CONFIG_X86_CPUID is not set
CONFIG_1GB=y
# CONFIG_2GB is not set
# CONFIG_MATH_EMULATION is not set
# CONFIG_MTRR is not set
# CONFIG_SMP is not set

#
# Loadable module support
#
# CONFIG_MODULES is not set

#
# General setup
#
# CONFIG_NET is not set
# CONFIG_PCI is not set
# CONFIG_MCA is not set
# CONFIG_VISWS is not set
# CONFIG_SYSVIPC is not set
# CONFIG_BSD_PROCESS_ACCT is not set
# CONFIG_SYSCTL is not set
# CONFIG_BINFMT_AOUT is not set
# CONFIG_BINFMT_ELF is not set
# CONFIG_BINFMT_MISC is not set
CONFIG_PARPORT=y
# CONFIG_PARPORT_PC is not set
# CONFIG_APM is not set
# CONFIG_TOSHIBA is not set

#
# Plug and Play support
#
# CONFIG_PNP is not set

#
# Block devices
#
# CONFIG_BLK_DEV_FD is not set
# CONFIG_BLK_DEV_IDE is not set

#
# Please see Documentation/ide.txt for help/info on IDE drives
#
# CONFIG_BLK_DEV_HD_ONLY is not set

#
# Additional Block Devices
#
# CONFIG_BLK_DEV_LOOP is not set
# CONFIG_BLK_DEV_MD is not set
# CONFIG_BLK_DEV_RAM is not set
# CONFIG_BLK_DEV_XD is not set
CONFIG_PARIDE_PARPORT=y
# CONFIG_PARIDE is not set
# CONFIG_BLK_DEV_HD is not set

#
# Telephony Support
#
# CONFIG_PHONE is not set
# CONFIG_PHONE_IXJ is not set

#
# SCSI support
#
# CONFIG_SCSI is not set

#
# I2O device support
#
# CONFIG_I2O is not set
# CONFIG_I2O_PCI is not set
# CONFIG_I2O_BLOCK is not set
# CONFIG_I2O_SCSI is not set

#
# Amateur Radio support
#
CONFIG_HAMRADIO=y

#
# Misc. hamradio protocols
#
CONFIG_HFMODEM=y
# CONFIG_HFMODEM_SBC is not set
# CONFIG_HFMODEM_WSS is not set

#
# ISDN subsystem
#

#
# Old CD-ROM drivers (not SCSI, not IDE)
#
# CONFIG_CD_NO_IDESCSI is not set

#
# Character devices
#
# CONFIG_VT is not set
# CONFIG_SERIAL is not set
# CONFIG_SERIAL_EXTENDED is not set
# CONFIG_SERIAL_NONSTANDARD is not set
# CONFIG_UNIX98_PTYS is not set
# CONFIG_PRINTER is not set
# CONFIG_MOUSE is not set

#
# Joysticks
#
# CONFIG_JOYSTICK is not set
# CONFIG_QIC02_TAPE is not set
# CONFIG_WATCHDOG is not set
# CONFIG_NVRAM is not set
# CONFIG_RTC is not set

#
# Video For Linux
#
# CONFIG_VIDEO_DEV is not set
# CONFIG_DTLK is not set

#
# Ftape, the floppy tape device driver
#
# CONFIG_FTAPE is not set

#
# USB support
#
# CONFIG_USB is not set

#
# Filesystems
#
# CONFIG_QUOTA is not set
# CONFIG_AUTOFS_FS is not set
# CONFIG_AFFS_FS is not set
# CONFIG_HFS_FS is not set
# CONFIG_FAT_FS is not set
# CONFIG_MSDOS_FS is not set
# CONFIG_UMSDOS_FS is not set
# CONFIG_VFAT_FS is not set
# CONFIG_ISO9660_FS is not set
# CONFIG_JOLIET is not set
# CONFIG_MINIX_FS is not set
# CONFIG_NTFS_FS is not set
# CONFIG_HPFS_FS is not set
# CONFIG_PROC_FS is not set
# CONFIG_ROMFS_FS is not set
# CONFIG_EXT2_FS is not set
# CONFIG_SYSV_FS is not set
# CONFIG_UFS_FS is not set

#
# Partition Types
#
# CONFIG_BSD_DISKLABEL is not set
# CONFIG_MAC_PARTITION is not set
# CONFIG_SMD_DISKLABEL is not set
# CONFIG_SOLARIS_X86_PARTITION is not set
CONFIG_NLS=y

#
# Native Language Support
#
CONFIG_NLS_DEFAULT="cp437"
# CONFIG_NLS_CODEPAGE_437 is not set
# CONFIG_NLS_CODEPAGE_737 is not set
# CONFIG_NLS_CODEPAGE_775 is not set
# CONFIG_NLS_CODEPAGE_850 is not set
# CONFIG_NLS_CODEPAGE_852 is not set
# CONFIG_NLS_CODEPAGE_855 is not set
# CONFIG_NLS_CODEPAGE_857 is not set
# CONFIG_NLS_CODEPAGE_860 is not set
# CONFIG_NLS_CODEPAGE_861 is not set
# CONFIG_NLS_CODEPAGE_862 is not set
# CONFIG_NLS_CODEPAGE_863 is not set
# CONFIG_NLS_CODEPAGE_864 is not set
# CONFIG_NLS_CODEPAGE_865 is not set
# CONFIG_NLS_CODEPAGE_866 is not set
# CONFIG_NLS_CODEPAGE_869 is not set
# CONFIG_NLS_CODEPAGE_874 is not set
# CONFIG_NLS_CODEPAGE_932 is not set
# CONFIG_NLS_CODEPAGE_936 is not set
# CONFIG_NLS_CODEPAGE_949 is not set
# CONFIG_NLS_CODEPAGE_950 is not set
# CONFIG_NLS_ISO8859_1 is not set
# CONFIG_NLS_ISO8859_2 is not set
# CONFIG_NLS_ISO8859_3 is not set
# CONFIG_NLS_ISO8859_4 is not set
# CONFIG_NLS_ISO8859_5 is not set
# CONFIG_NLS_ISO8859_6 is not set
# CONFIG_NLS_ISO8859_7 is not set
# CONFIG_NLS_ISO8859_8 is not set
# CONFIG_NLS_ISO8859_9 is not set
# CONFIG_NLS_ISO8859_14 is not set
# CONFIG_NLS_ISO8859_15 is not set
# CONFIG_NLS_KOI8_R is not set

#
# Sound
#
# CONFIG_SOUND is not set

#
# Kernel hacking
#
# CONFIG_MAGIC_SYSRQ is not set
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