Makefile不能理解注释

Question

如果我在我的Makefile中添加注释(# ...)，make会报错并退出。如果我删除注释，这个Makefile就能正常工作。

Makefile:1: *** missing separator. Stop.

• 版本号：3.81
• 操作系统：Ubuntu 9.04

Makefile：

# Backup Makefile
#
# Create backups from various services and the system itself. This
# script is used to perform single backup tasks or a whole backup
# from the system. For more information about this file and how to
# use it, read the README file in the same directory.

BACKUP_ROOT = /srv/backup
ETC_PATH = /srv/config
SVN_PATH = /srv/svn/
TRAC_PATH = /srv/trac/sysinventory
PR10_PATH = /swsd/project/vmimages/...
PR10_MOUNT_PATH = /tmp/temp_sshfs_pr10

MYSQL_USER = "xxx"
MYSQL_PASSWORD = "xxx"


DATE = `date +%F`

help :
        cat README

init-environment :
        mkdir -p $(BACKUP_ROOT)
        mkdir $(BACKUP_ROOT)/tmp
        mkdir -p $(PR10_MOUNT_PATH)

backup : backup-mysql backup-configuration backup-svn backup-trac

upload-to-pr10 : mount-pr10
        tar cf $(DATE)-backup-blizzard.tar -C $(BACKUP_ROOT) *.-backup.tar.gz
        mv $(BACKUP_ROOT)/*-backup-blizzard.tar $(PR10_MOUNT_PATH)/
        umount $(PR10_MOUNT_PATH)

mount-pr10 :
        su xxx -d "sshfs -o allow_root xxx@xxx:$(PR10_PATH) $(PR10_MOUNT_PATH)"
        fusermount -u $(PR10_MOUNT_PATH)

backup-mysql :
        mysqldump --comments --user=$(MYSQL_USER) --password=$(MYSQL_PASSWORD) --all-databases --result-file=$(BACKUP_ROOT)/tmp/mysql_dump.sql
        tar czf $(BACKUP_ROOT)/$(DATE)-mysql-backup.tar.gz -C 
        $(BACKUP_ROOT)/tmp/mysql_dump.sql

backup-configuration :
        tar czf $(BACKUP_ROOT)/$(DATE)-configuration-backup.tar.gz $(ETC_PATH)/

backup-svn :
        svnadmin dump $(SVN_PATH)/repository > $(BACKUP_ROOT)/tmp/svn_repository.dump
        tar czf $(BACKUP_ROOT)/$(DATE)-subversion-backup.tar.gz -C $(BACKUP_ROOT)/tmp/svn_repository.dump

backup-trac :
        tar czf $(BACKUP_ROOT)/$(DATE)-trac-backup.tar.gz $(TRAC_PATH)/

clean :
        rm -f $(BACKUP_ROOT)/tmp/mysql_dump.sql
        rm -f $(BACKUP_ROOT)/tmp/svn_repository.dump
        rm -f $(BACKUP_ROOT)/*-backup.tar.gz
        rm -f $(BACKUP_ROOT)/*-backup-blizzard.tar

- f00860

---

我尝试使用相同版本的Make进行了测试。随时添加注释都没有问题，所以显然你做错了什么。 - jrockway

替换空格为制表符后，这个对我有用。 - anon

Answer 1

您的 Makefile 对我起作用了（将空格替换为制表符），所以听起来您可能有一些杂乱的非打印字符。

尝试检查“cat -vet Makefile”命令的输出。这将显示 EOL、TAB 和其他看不见的字符的位置。

您希望看到类似于以下内容：

# Backup Makefile$
#$
# Create backups from various services and the system itself. This$
# script is used to perform single backup tasks or a whole backup$
# from the system. For more information about this file and how to$
# use it, read the README file in the same directory.$
$
BACKUP_ROOT = /srv/backup$
ETC_PATH = /srv/config$
SVN_PATH = /srv/svn/$
TRAC_PATH = /srv/trac/sysinventory$
PR10_PATH = /swsd/project/vmimages/...$
PR10_MOUNT_PATH = /tmp/temp_sshfs_pr10$
$
MYSQL_USER = "xxx"$
MYSQL_PASSWORD = "xxx"$
$
$
DATE = `date +%F`$
$
help :$
^Icat README$
$
$
init-environment :$
^Imkdir -p $(BACKUP_ROOT)$
^Imkdir $(BACKUP_ROOT)/tmp$
^Imkdir -p $(PR10_MOUNT_PATH)$
$

确保所有命令前都加上 "^I"。

你也可以尝试使用类似以下的方式查找多余的字符：

cat -vet Makefile | grep "\^[^I]" --colour=auto

- Shawn Chin

Answer 2

你可能在注释中使用了空格而不是制表符。 请发布Makefile，这样我们就不必猜测了。

- Kristof Provost

---

如果这是问题（很可能是），在SO（或互联网上）发布帖子也不会有太大帮助。谁会在互联网上使用制表符？ - Chris Lutz

不，注释中没有制表符。 - f00860

我说错了。选项卡应该在你的规则中。我以为你的规则中会有带有前置空格而不是制表符的注释。但事实并非如此（你的规则中没有注释）。 - Kristof Provost