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(AC_PREREQ): New macro, with some helper macros.

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This commit is contained in:
David MacKenzie 1994-03-24 18:36:13 +00:00
parent d45e407f0a
commit 664a96a524
2 changed files with 48 additions and 4 deletions
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26
acgeneral.m4
View File

@ -27,13 +27,13 @@ undefine([shift])dnl
undefine([format])dnl undefine([format])dnl
dnl dnl
ifdef([__gnu__], , [errprint(Autoconf requires GNU m4 ifdef([__gnu__], , [errprint(Autoconf requires GNU m4
)exit(1)])dnl )m4exit(2)])dnl
dnl dnl
dnl dnl
dnl Utility functions for stamping the configure script. dnl Utility functions for stamping the configure script.
dnl dnl
dnl dnl
define(AC_ACVERSION, 1.7.5)dnl define(AC_ACVERSION, 1.7.6)dnl
dnl This is defined by the --version option of the autoconf script. dnl This is defined by the --version option of the autoconf script.
ifdef([AC_PRINT_VERSION], [errprint(Autoconf version AC_ACVERSION ifdef([AC_PRINT_VERSION], [errprint(Autoconf version AC_ACVERSION
)])dnl )])dnl
@ -285,6 +285,28 @@ define(AC_DOREV, [#!/bin/sh
])dnl ])dnl
define(AC_REVISION, [AC_DOREV(translit($1,$"))])dnl define(AC_REVISION, [AC_DOREV(translit($1,$"))])dnl
dnl dnl
dnl Subroutines of AC_PREREQ.
dnl
dnl Change the dots in version number $1 into commas.
define(AC_PREREQ_SPLIT, [translit($1,.,[,])])dnl
dnl
dnl Default the ternary version number to 0 (e.g., 1,7 -> 1,7,0).
define(AC_PREREQ_CANON, [$1,$2,ifelse([$3],,0,[$3])])dnl
dnl
dnl Complain and exit if the version number in $1 through $3 is less than
dnl the version number in $4 through $6.
dnl $7 is the printable version of the second version number.
define(AC_PREREQ_COMPARE,
[ifelse(builtin([eval],
[$3 + $2 * 100 + $1 * 10000 < $6 + $5 * 100 + $4 * 10000]),1,
[errprint(Autoconf version $7 or higher is required
)m4exit(3)])])dnl
dnl
dnl Complain if the Autoconf version is less than $1.
define(AC_PREREQ,
[AC_PREREQ_COMPARE(AC_PREREQ_CANON(AC_PREREQ_SPLIT(AC_ACVERSION)),
AC_PREREQ_CANON(AC_PREREQ_SPLIT([$1])),[$1])])dnl
dnl
dnl dnl
dnl Setting variables dnl Setting variables
dnl dnl

26
lib/autoconf/general.m4
View File

@ -27,13 +27,13 @@ undefine([shift])dnl
undefine([format])dnl undefine([format])dnl
dnl dnl
ifdef([__gnu__], , [errprint(Autoconf requires GNU m4 ifdef([__gnu__], , [errprint(Autoconf requires GNU m4
)exit(1)])dnl )m4exit(2)])dnl
dnl dnl
dnl dnl
dnl Utility functions for stamping the configure script. dnl Utility functions for stamping the configure script.
dnl dnl
dnl dnl
define(AC_ACVERSION, 1.7.5)dnl define(AC_ACVERSION, 1.7.6)dnl
dnl This is defined by the --version option of the autoconf script. dnl This is defined by the --version option of the autoconf script.
ifdef([AC_PRINT_VERSION], [errprint(Autoconf version AC_ACVERSION ifdef([AC_PRINT_VERSION], [errprint(Autoconf version AC_ACVERSION
)])dnl )])dnl
@ -285,6 +285,28 @@ define(AC_DOREV, [#!/bin/sh
])dnl ])dnl
define(AC_REVISION, [AC_DOREV(translit($1,$"))])dnl define(AC_REVISION, [AC_DOREV(translit($1,$"))])dnl
dnl dnl
dnl Subroutines of AC_PREREQ.
dnl
dnl Change the dots in version number $1 into commas.
define(AC_PREREQ_SPLIT, [translit($1,.,[,])])dnl
dnl
dnl Default the ternary version number to 0 (e.g., 1,7 -> 1,7,0).
define(AC_PREREQ_CANON, [$1,$2,ifelse([$3],,0,[$3])])dnl
dnl
dnl Complain and exit if the version number in $1 through $3 is less than
dnl the version number in $4 through $6.
dnl $7 is the printable version of the second version number.
define(AC_PREREQ_COMPARE,
[ifelse(builtin([eval],
[$3 + $2 * 100 + $1 * 10000 < $6 + $5 * 100 + $4 * 10000]),1,
[errprint(Autoconf version $7 or higher is required
)m4exit(3)])])dnl
dnl
dnl Complain if the Autoconf version is less than $1.
define(AC_PREREQ,
[AC_PREREQ_COMPARE(AC_PREREQ_CANON(AC_PREREQ_SPLIT(AC_ACVERSION)),
AC_PREREQ_CANON(AC_PREREQ_SPLIT([$1])),[$1])])dnl
dnl
dnl dnl
dnl Setting variables dnl Setting variables
dnl dnl