Also fix handling of sysV substitutions when lhs and variable are empty.
Also that modifiers do not cause errors during conditional tests
when undefined variables should otherwise be ok.
Ie. .if defined(nosuch) && ${nosuch:Mx} != ""
but not to track it - as is done for .export
This allows the variable to be updated without affecting what was put
into the environment.
Older versions of make will simply treat this as .export
and .unexport-env which unexport's all previously .export'd globals
as well as clearing environ[].
Allow's sys.mk near total controll.
Reviewed by: apb
Use .MAKE.LEVEL to track recursion.
The first instance of make will have .MAKE.LEVEL 0, which
can be handy for excluding rules which should not apply
in a sub-make.
gmake and freebsd's make have a similar mechanism, but each
uses a different variable to track it. Since we cannot be
compatible with both, we allow the makefiles to cope if they want
by handling the export of .MAKE.LEVEL+1 in Var_Set().
There is no need to touch the state of vars in child anyway.
Change 2nd arg to Var_Export1() to indicate if we are the parent or child,
and only set flags in the parent.
Saves having to malloc/free a fixed size structure.
Buf_Init() now takes ptr to Buffer to initialiase.
Change Buf_Destroy() to return ptr to string when not freed.
Remove large number of casts to (Byte) and (Byte *) - 'Byte' is 'char' here.
Buf_AddByte[s] guarantees that the data is 0 termininated, so never add '\0'.
Keep 'count' not 'left' and 'inPtr', code is simplier with only one update.
Fix fallou, no functional change.
parts of make that try to scan through variable expansions.
(given the make syntax that is all rather doomed anyway!)
Move the check for $\0 to a place where it will be detected - otherwise
the parser will run off the input buffer!
Replace Buf_Discard() with Buf_Empty() since the former might leave the
'outPtr != buffer' and the only caller wanted all the data discared.
Remove 'outPtr' now that it always equals 'buffer'.
The assumption about Buf_GetAll()is now guaranteed by design.
bmake_malloc and friends. Implement them via macros for the native case
and provide fallback implementations otherwise. Avoid polluting the
namespace by not defining enomem globally. Don't bother to provide
strdup and strndup, they were only used for the estrdup and estrndup
comapt code.
This addresses the presence of emalloc in system libraries on A/UX and
resulted strange issues as reported by Timothy E. Larson.
rare and skipping over normal characters with strcspn is therefore
faster. Further simplify logic by always setting newline and precompute
the size of the string.
OK christos@
The issue seems to have been present for some time, only showed up
when running unit-tests on SunOS.
Make sure we get an error message, but otherwise behave as before.
tsutsui