A NOTE has been added to this issue. ====================================================================== https://www.austingroupbugs.net/view.php?id=1422 ====================================================================== Reported By: joerg Assigned To: ====================================================================== Project: Issue 8 drafts Issue ID: 1422 Category: Shell and Utilities Type: Error Severity: Objection Priority: normal Status: Resolved Name: Jörg Schilling Organization: User Reference: Section: Page Number: 2894-2895 Line Number: 97277-97282 Final Accepted Text: https://www.austingroupbugs.net/view.php?id=1422#c5265 Resolution: Accepted As Marked Fixed in Version: ====================================================================== Date Submitted: 2020-11-18 13:49 UTC Last Modified: 2021-03-11 22:07 UTC ====================================================================== Summary: The current definition for the += assingment is in conflict with existing behavior of make and unpredictable/error-prone ======================================================================
---------------------------------------------------------------------- (0005267) dmitry_goncharov (reporter) - 2021-03-11 22:07 https://www.austingroupbugs.net/view.php?id=1422#c5267 ---------------------------------------------------------------------- > Make on AIX supports += and explicitly documents that macros are always expanded at use time. The man page for aix make says "Variable substitution occurs at two distinct times, depending on where the variable is being used. Variables in dependency lines are expanded as the line is read. Variables in shell commands are expanded when the shell command is executed." $ cat makefile what = hello msg += $(what) all: @echo msg=$(msg) what=bye $ /usr/bin/make msg=bye $ $ cat makefile2 what = hello msg += $(what) all: $(msg) @echo msg=$(msg) what=bye $ /usr/bin/make -f makefile2 make: 1254-002 Cannot find a rule to create target hello from dependencies. Stop. $ > I currently have no access and thus cannot say whether there is also support fpr :=. No support for :=. Issue History Date Modified Username Field Change ====================================================================== 2020-11-18 13:49 joerg New Issue 2020-11-18 13:49 joerg Name => Jörg Schilling 2020-11-18 13:49 joerg Page Number => 2894-2895 2020-11-18 13:49 joerg Line Number => 97277-97282 2021-03-05 16:11 geoffclare Note Added: 0005257 2021-03-05 17:07 psmith Note Added: 0005258 2021-03-05 17:10 psmith Note Edited: 0005258 2021-03-05 17:11 psmith Note Edited: 0005258 2021-03-05 17:17 psmith Note Edited: 0005258 2021-03-05 18:30 joerg Note Added: 0005259 2021-03-05 19:18 psmith Note Added: 0005260 2021-03-05 19:18 psmith Note Added: 0005261 2021-03-05 19:18 psmith Note Deleted: 0005261 2021-03-05 19:38 psmith Note Edited: 0005260 2021-03-08 15:32 joerg Note Added: 0005262 2021-03-08 15:42 joerg Note Edited: 0005262 2021-03-08 18:56 psmith Note Added: 0005263 2021-03-08 18:58 psmith Note Edited: 0005263 2021-03-11 15:50 joerg Note Added: 0005264 2021-03-11 15:51 joerg Note Edited: 0005264 2021-03-11 16:26 geoffclare Note Added: 0005265 2021-03-11 16:26 geoffclare Final Accepted Text => https://www.austingroupbugs.net/view.php?id=1422#c5265 2021-03-11 16:26 geoffclare Status New => Resolved 2021-03-11 16:26 geoffclare Resolution Open => Accepted As Marked 2021-03-11 16:27 geoffclare Tag Attached: issue8 2021-03-11 22:07 dmitry_goncharovNote Added: 0005267 ======================================================================
