[dpdk-dev,PATCHv6,4/7] Makefile: Do post processing on objects that register a driver
diff mbox

Message ID 1464703068-2924-5-git-send-email-nhorman@tuxdriver.com
State Superseded, archived
Delegated to: Thomas Monjalon
Headers show

Commit Message

Neil Horman May 31, 2016, 1:57 p.m. UTC
Modify the compilation makefile to identify C files that export PMD information,
and use that to trigger execution of the pmdinfo binary.  If the execution of
pmdinfo is successful, compile the output C file to an object, and use the
linker to do relocatable linking on the resultant object file into the parent
object that it came from.  This effectively just adds the json string into the
string table of the object that defines the PMD to the outside world.

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
CC: Bruce Richardson <bruce.richardson@intel.com>
CC: Thomas Monjalon <thomas.monjalon@6wind.com>
CC: Stephen Hemminger <stephen@networkplumber.org>
CC: Panu Matilainen <pmatilai@redhat.com>
---
 mk/internal/rte.compile-pre.mk | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

Patch
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diff --git a/mk/internal/rte.compile-pre.mk b/mk/internal/rte.compile-pre.mk
index b9bff4a..92517ad 100644
--- a/mk/internal/rte.compile-pre.mk
+++ b/mk/internal/rte.compile-pre.mk
@@ -88,10 +88,24 @@  C_TO_O_CMD = 'cmd_$@ = $(C_TO_O_STR)'
 C_TO_O_DO = @set -e; \
 	echo $(C_TO_O_DISP); \
 	$(C_TO_O) && \
+	sh -c "grep -q \"PMD_REGISTER_DRIVER(.*)\" $<; \
+	if [ \$$? -eq 0 ]; then \
+		echo \"  PMDINFOGEN\" $@; \
+		OBJF=`readlink -f $@`; \
+		${RTE_OUTPUT}/buildtools/pmdinfogen \$$OBJF \$$OBJF.pmd.c; \
+		if [ \$$? -eq 0 ]; \
+		then \
+			echo \"  PMDINFOBUILD\" $@; \
+			$(CC) $(CFLAGS) -c -o \$$OBJF.pmd.o \$$OBJF.pmd.c; \
+			$(CROSS)ld $(LDFLAGS) -r -o \$$OBJF.o \$$OBJF.pmd.o \$$OBJF; \
+			mv -f \$$OBJF.o \$$OBJF; \
+		fi; \
+	fi;" && \
 	echo $(C_TO_O_CMD) > $(call obj2cmd,$(@)) && \
 	sed 's,'$@':,dep_'$@' =,' $(call obj2dep,$(@)).tmp > $(call obj2dep,$(@)) && \
 	rm -f $(call obj2dep,$(@)).tmp
 
+
 # return an empty string if string are equal
 compare = $(strip $(subst $(1),,$(2)) $(subst $(2),,$(1)))