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Allow use of virtual python environments while maintaining system python support #46

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3 changes: 2 additions & 1 deletion configure/CONFIG
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Original file line number Diff line number Diff line change
Expand Up @@ -21,7 +21,8 @@ INSTALL_LOCATION = $(TOP)

# As soon as python3 is the default configuration
# PYTHON_CONFIG=python3-config
PYTHON_CONFIG=python-config
#PYTHON_CONFIG=python-config
PYTHON_CONFIG=/epics/iocs/ioc-hkl/.pixi/envs/default/bin/python3.12-config

# CONFIG_SITE files contain other build configuration settings
include $(TOP)/configure/CONFIG_SITE
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26 changes: 20 additions & 6 deletions configure/Makefile
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Expand Up @@ -3,19 +3,33 @@ TOP=..
include $(TOP)/configure/CONFIG
include $(TOP)/configure/CONFIG_SITE

TARGETS = $(CONFIG_TARGETS) CONFIG.PyDevice
TARGETS = $(CONFIG_TARGETS)
CONFIGS += $(subst ../,,$(wildcard $(CONFIG_INSTALLS)))
CONFIGS += CONFIG.PyDevice

include $(TOP)/configure/RULES

# Starting with Python 3.8, python-config needs --embed flag
ifeq (,$(findstring embed,$(shell $(PYTHON_CONFIG) --help)))
PYDEV_SYS_PROD_LIBS = $(patsubst -l%,%,$(filter -l%,$(shell $(PYTHON_CONFIG) --ldflags)))
PYDEV_LDFLAGS_RAW = $(shell $(PYTHON_CONFIG) --ldflags)
else
PYDEV_SYS_PROD_LIBS = $(patsubst -l%,%,$(filter -l%,$(shell $(PYTHON_CONFIG) --ldflags --embed)))
PYDEV_LDFLAGS_RAW = $(shell $(PYTHON_CONFIG) --ldflags --embed)
endif
PYDEV_USR_CXXFLAGS = $(filter -I%,$(shell $(PYTHON_CONFIG) --cflags))

# Split ldflags into -L (dirs) and -l (libs)
PYDEV_SYS_PROD_LIBS = $(patsubst -l%,%,$(filter -l%,$(PYDEV_LDFLAGS_RAW)))
PYDEV_USR_LDFLAGS = $(filter -L%,$(PYDEV_LDFLAGS_RAW))

PYDEV_USR_CXXFLAGS = $(filter -I%,$(shell $(PYTHON_CONFIG) --cflags))

CONFIG.PyDevice:
@echo "SYS_PROD_LIBS += $(PYDEV_SYS_PROD_LIBS)" > $(TOP)/configure/$@
@echo "USR_CXXFLAGS += $(PYDEV_USR_CXXFLAGS)" >> $(TOP)/configure/$@
@echo "# Generated by configure/Makefile using $(PYTHON_CONFIG)" > $@
@echo "SYS_PROD_LIBS += $(PYDEV_SYS_PROD_LIBS)" >> $@
@echo "USR_LDFLAGS += $(PYDEV_USR_LDFLAGS)" >> $@
@echo "USR_CXXFLAGS += $(PYDEV_USR_CXXFLAGS)" >> $@

clean: clean_pydevice

clean_pydevice:
$(RM) CONFIG.PyDevice