diff options
Diffstat (limited to 'm4/cvstag.m4')
| -rw-r--r-- | m4/cvstag.m4 | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/m4/cvstag.m4 b/m4/cvstag.m4 new file mode 100644 index 0000000..a0c9418 --- /dev/null +++ b/m4/cvstag.m4 @@ -0,0 +1,41 @@ +# +# TILLAC_CVSTAG([$Name$], [pattern]) +# +# Strip $Name$ from first argument extracting +# the CVS tag. If the second optional argument is +# given then it must specify a regexp pattern that +# is stripped from the resulting tag. +# +# This macro is intended to be used as follows: +# +# AC_INIT(package, TILLAC_CVSTAG([$Name$])) +# +# CVS inserts a tag which is extracted by this macro. +# Thus the CVS tag of 'configure.ac' is propagated to +# the PACKAGE_VERSION and VERSION Makefile variables. +# +# E.g., a checked-out copy may be tagged 'Release_foo' +# and using the macro: +# +# AC_INIT(package, TILLAC_CVSTAG([$Name$],'Release_')) +# +# results in the Makefile defining +# +# PACKAGE_VERSION=foo +# +# NOTE: if [] characters are required in the regexp pattern +# then they must be quoted ([[ ]]). +# +m4_define(TILLAC_CVSTAG, + [m4_if( + _TILLAC_CVSTAG($1,[$2]), + , + [untagged], + _TILLAC_CVSTAG($1,[$2]))]dnl +) +m4_define(_TILLAC_CVSTAG, + [m4_bregexp( + [$1], + \([[$]]Name:[[ ]]*\)\($2\)\([[^ ]]*\)\([[ ]]*[[^$]]*\)[[$]], + \3)]dnl +) |