diff options
| author | Kristian Larsson <kristian@spritelink.net> | 2022-10-19 18:56:38 +0200 |
|---|---|---|
| committer | Ivan Maidanski <ivmai@mail.ru> | 2022-10-20 19:14:21 +0300 |
| commit | f7cfa9d105cb6795fa93d432b7f04c2f07730a38 (patch) | |
| tree | e167f3592c6fb7b1184a6907ef50f3668dd64e1f /Makefile.direct | |
| parent | 9135a7eab9b80aaab309f71055e040165509837a (diff) | |
| download | bdwgc-f7cfa9d105cb6795fa93d432b7f04c2f07730a38.tar.gz | |
Allow passing custom CFLAGS[_EXTRA] to Makefile.direct
Issue #483 (bdwgc).
By using ?= we only set the CFLAGS variable in case it doesn't already
have a value. This means it is now possible for someone to control
the way bdwgc is compiled by feeding in the CFLAGS variable whereas
previously one had to modify the Makefile.direct file. Further, since
we consider the CFLAGS a reasonable default, the primary means of
injecting control flags is by setting CFLAGS_EXTRA, where we now also
allow passing in a value and the stuff in Makefile.direct is appended
to that input. Same for [AS_]ABI_FLAG and CXXFLAGS variables.
* Makefile.direct (ABI_FLAG, AS_ABI_FLAG, CFLAGS_EXTRA, CFLAGS,
CXXFLAGS): Assign value using operator "?=" instead of "=" one.
Diffstat (limited to 'Makefile.direct')
| -rw-r--r-- | Makefile.direct | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/Makefile.direct b/Makefile.direct index fbd39ec9..a2bdaec0 100644 --- a/Makefile.direct +++ b/Makefile.direct @@ -13,13 +13,13 @@ # check-cpp-deps - same as check-cpp but do not run the test # cord/de - builds dumb editor based on cords. -ABI_FLAG= +ABI_FLAG?= # ABI_FLAG should be the cc flag that specifies the ABI. On most # platforms this will be the empty string. Possible values: # +DD64 for 64-bit executable on HP/UX. # -n32, -n64, -o32 for SGI/MIPS ABIs. -AS_ABI_FLAG=$(ABI_FLAG) +AS_ABI_FLAG?=$(ABI_FLAG) # ABI flag for assembler. On HP/UX this is +A64 for 64 bit # executables. @@ -45,9 +45,9 @@ VPATH= $(srcdir) # Path to atomic_ops source. AO_SRC_DIR=$(srcdir)/libatomic_ops -CFLAGS_EXTRA= +CFLAGS_EXTRA?= # We need CFLAGS_FOR_PIC because we might be building a shared library. -CFLAGS= -O -I$(srcdir)/include -I$(AO_SRC_DIR)/src \ +CFLAGS?= -O -I$(srcdir)/include -I$(AO_SRC_DIR)/src \ -DALL_INTERIOR_POINTERS -DENABLE_DISCLAIM -DGC_ATOMIC_UNCOLLECTABLE \ -DGC_GCJ_SUPPORT -DJAVA_FINALIZATION -DNO_EXECUTE_PERMISSION \ -DUSE_MMAP -DUSE_MUNMAP $(CFLAGS_FOR_PIC) $(CFLAGS_EXTRA) @@ -77,7 +77,7 @@ HOSTCFLAGS=$(CFLAGS) # Look into doc/README.macros for the description of the "define arguments" # influencing the collector configuration. -CXXFLAGS= $(CFLAGS) +CXXFLAGS?= $(CFLAGS) AR= ar RANLIB= ranlib |