[bug #59584] ifeq with a space after the first open parenthesis

[anonymous]

URL:
  <https://savannah.gnu.org/bugs/?59584>

                 Summary: ifeq with a space after the first open parenthesis
                 Project: make
            Submitted by: None
            Submitted on: Tue 01 Dec 2020 03:55:44 AM UTC
                Severity: 3 - Normal
              Item Group: Bug
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
       Component Version: 4.2.1
        Operating System: POSIX-Based
           Fixed Release: None
           Triage Status: None

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Details:

Seems like a space breaks the ifeq conditional.

Fedora: 32 5.8.13-200.fc32.x86_64
Make: 4.2.1

NB: The first and the last tests.



# The checks are for this variable being set to true.
using_thirdPartyLib=true

#confirmation. No trailing spaces
$(warning using_thirdPartyLib=[$(using_thirdPartyLib)] )


# THIS DOES NOT WORK!!!! due to the extra space after the open paren
ifeq ( $(using_thirdPartyLib),true)
my_c_flags = -I/home/3plibs/tplib/src
else
my_c_flags = UNSET
endif
$(warning conditonal using parens but WITH the extra space after open paren :
my_c_flags=$(my_c_flags) )


my_c_flags =
# this works. No parens. Using quotes instead
ifeq "$(using_thirdPartyLib)" "true"
my_c_flags = -I/home/3plibs/tplib/src
else
my_c_flags = UNSET
endif
$(warning conditonal using double quotes and no parens and hence no space
after open paren : my_c_flags=$(my_c_flags) )


my_c_flags =
# this works. No parens. Using quotes instead
ifeq '$(using_thirdPartyLib)' 'true'
my_c_flags = -I/home/3plibs/tplib/src
else
my_c_flags = UNSET
endif
$(warning conditonal using single quotes and no parens and hence no space
after open paren : my_c_flags=$(my_c_flags) )


my_c_flags =
# this works as expected
ifeq ($(using_thirdPartyLib),true)
my_c_flags = -I/home/3plibs/tplib/src
else
my_c_flags = UNSET
endif
$(warning conditonal with parens but WITHOUT the extra space after open paren
: my_c_flags=$(my_c_flags) )


my_c_flags =
# this test has the same space after the first paren but it actually works
ifneq ( $(using_thirdPartyLib),false)
$(warning using_thirdPartyLib=[$(using_thirdPartyLib)] )
my_c_flags = -I/home/3plibs/tplib/src
else
my_c_flags = UNSET
endif
$(warning ifneq conditonal with parens but WITH the extra space after open
paren: my_c_flags=$(my_c_flags) )

all:





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