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Description: Pass the default build flags.
Author: Andrius Merkys <merkys@debian.org>
Bug-Debian: https://bugs.debian.org/1119367
--- a/Makefile
+++ b/Makefile
@@ -25,10 +25,10 @@
# For SPGLIB (1.8.3 or greater)
DEFS=-DSPGLIB
-CPPFLAGS=-I.
+CPPFLAGS+=-I.
# Add "-fopenmp" to next line if the linker complains about various
# missing threads
-LDFLAGS=-L.
+LDFLAGS?=-L.
LIBS=-lsymspg
# To compile without SPGLIB, set all of the above to be empty
@@ -40,7 +40,8 @@
# Linux or MacOS / x86_64 / gcc
# For better optimisation on x86_64, add -mavx2 assuming modern hardware
-CFLAGS=-Wall -Wno-unused-result -O2 -g $(DEFS)
+CFLAGS?=-Wall -Wno-unused-result -O2 -g
+CFLAGS+=$(DEFS)
# Linux / IA32 / gcc
#CFLAGS=-Wall -Wno-unused-result -O -D_FILE_OFFSET_BITS=64 $(DEFS) -g
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