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Makefile: add link-time optimization support #420

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Makefile: add link-time optimization support #420

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6db1800
Makefile: add link-time optimization support
pjonsson Mar 16, 2026
ad972ae
Dockerfile: enable link-time optimization
pjonsson Mar 16, 2026
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2 changes: 1 addition & 1 deletion Dockerfile
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Original file line number Diff line number Diff line change
Expand Up @@ -45,7 +45,7 @@ COPY --link --chown=1000:1000 . .
# Build, install, check FORCE
RUN echo "building FORCE" && \
./debug.sh $debug && \
make -j$(nproc) $build
make LTO=yes -j$(nproc) $build

FROM davidfrantz/base:latest AS force

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9 changes: 7 additions & 2 deletions Makefile
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Expand Up @@ -27,10 +27,15 @@
# Installation directory
INSTALLDIR=/usr/local/bin

# Link time optimization flags.
ifeq ($(LTO),yes)
FLAGS_LTO = -flto
endif

# Libraries
GDAL_INCLUDES = $(shell gdal-config --cflags)
GDAL_LIBS = $(shell gdal-config --libs)
GDAL_FLAGS = -Wl,-rpath=/usr/lib
GDAL_FLAGS = $(FLAGS_LTO) -Wl,-rpath=/usr/lib

GSL_INCLUDES = $(shell gsl-config --cflags)
GSL_LIBS = $(shell gsl-config --libs)
Expand All @@ -57,7 +62,7 @@ RSTATS_LIBS = $(shell R CMD config --ldflags | sed 's/ /\n/g' | grep '\-L') -lR
### Compiler

# Compilation Flags
CFLAGS=-O3 -Wall -fopenmp
CFLAGS=-O3 -Wall $(FLAGS_LTO) -fopenmp
#CFLAGS=-g -Wall -fopenmp

GCC=gcc $(CFLAGS)
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