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[SV 65006] Allow secondary expansion of .EXTRA_PREREQS

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* src/rule.c (snap_implicit_rules): Set need_2nd_expansion of each
  prerequisite of global .EXTRA_PREREQS.
* src/file.c (snap_file):  Set need_2nd_expansion of each prerequisite
  of target-specific .EXTRA_PREREQS.
* tests/scripts/variables/EXTRA_PREREQS: Add tests.

Reported by Daniel Gerber <dg@atufi.org>.
This commit is contained in:
Dmitry Goncharov
2024-01-06 17:39:43 -05:00
committed by Paul Smith
parent 89bea82af3
commit 33932663b0
3 changed files with 51 additions and 3 deletions
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15
src/file.c
View File

@@ -722,6 +722,7 @@ snap_file (const void *item, void *arg)
{
struct file *f = (struct file*)item;
struct dep *prereqs = NULL;
struct dep *d;
/* If we're not doing second expansion then reset updating. */
if (!second_expansion)
@@ -741,14 +742,22 @@ snap_file (const void *item, void *arg)
/* If .EXTRA_PREREQS is set, add them as ignored by automatic variables. */
if (f->variables)
prereqs = expand_extra_prereqs (lookup_variable_in_set (STRING_SIZE_TUPLE(".EXTRA_PREREQS"), f->variables->set));
{
prereqs = expand_extra_prereqs (lookup_variable_in_set (
STRING_SIZE_TUPLE(".EXTRA_PREREQS"), f->variables->set));
if (second_expansion)
for (d = prereqs; d; d = d->next)
{
if (!d->name)
d->name = xstrdup (d->file->name);
d->need_2nd_expansion = 1;
}
}
else if (f->is_target)
prereqs = copy_dep_chain (arg);
if (prereqs)
{
struct dep *d;
for (d = prereqs; d; d = d->next)
if (streq (f->name, dep_name (d)))
/* Skip circular dependencies. */

6
src/rule.c
View File

@@ -140,6 +140,12 @@ snap_implicit_rules (void)
const char *d = dep_name (dep);
size_t l = strlen (d);
if (second_expansion)
{
if (!dep->name)
dep->name = xstrdup (dep->file->name);
dep->need_2nd_expansion = 1;
}
if (dep->need_2nd_expansion)
/* When pattern_search allocates a buffer, allow 5 bytes per each % to
substitute each % with $(*F) while avoiding realloc. */