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Niklas Hambüchen 717e821b99 autoconf: Allow overriding CFLAGS/CXXFLAGS from outside.
As is normal for autoconf-based projects.

For example, it is a common use case to do

    ./configure CXXFLAGS=-O0

This did not work for nix until now, because the `CXXFLAGS=` declaration
would unconditionally erase what the user had specified.

The custom `OPTIMIZE` flag is removed, but the default `-O3` is retained;
autoconf would default to `-g -O2` by default otherwise as documented on:

https://www.gnu.org/software/autoconf/manual/autoconf-2.60/html_node/C-Compiler.html
https://www.gnu.org/software/autoconf/manual/autoconf-2.60/html_node/C_002b_002b-Compiler.html
2019-07-03 04:32:25 +02:00

23 lines
475 B
Makefile

makefiles = \
local.mk \
src/libutil/local.mk \
src/libstore/local.mk \
src/libmain/local.mk \
src/libexpr/local.mk \
src/nix/local.mk \
src/resolve-system-dependencies/local.mk \
scripts/local.mk \
corepkgs/local.mk \
misc/systemd/local.mk \
misc/launchd/local.mk \
misc/upstart/local.mk \
doc/manual/local.mk \
tests/local.mk \
tests/plugins/local.mk
GLOBAL_CXXFLAGS += -g -Wall -include config.h
-include Makefile.config
include mk/lib.mk