[PATCH] add configure script

[Luiz Capitulino]

Signed-off-by: Luiz Capitulino <lcapitulino@xxxxxxxxxx>
---
 .gitignore |   1 +
 Makefile   |  22 ++----------
 configure  | 116 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 120 insertions(+), 19 deletions(-)
 create mode 100755 configure

diff --git a/.gitignore b/.gitignore
index ceee8bf..5b3e4cc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -34,3 +34,4 @@ SRPMS
 rt-tests.spec
 tags
 TAGS
+config.mk
diff --git a/Makefile b/Makefile
index 280fd3b..dad0175 100644
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,5 @@
+include config.mk
+
 VERSION = 0.97
 CC?=$(CROSS_COMPILE)gcc
 AR?=$(CROSS_COMPILE)ar
@@ -17,7 +19,6 @@ sources = cyclictest.c \
 	  svsematest.c
 
 TARGETS = $(sources:.c=)
-LIBS	= -lrt -lpthread
 RTTESTLIB = -lrttest -L$(OBJDIR)
 EXTRA_LIBS ?= -ldl	# for get_cpu
 DESTDIR	?=
@@ -48,26 +49,9 @@ ostype := $(lastword $(subst -, ,$(dumpmachine)))
 machinetype := $(shell echo $(dumpmachine)| \
     sed -e 's/-.*//' -e 's/i.86/i386/' -e 's/mips.*/mips/' -e 's/ppc.*/powerpc/')
 
-# The default is to assume you have libnuma installed, which is fine to do
-# even on non-numa machines. If you don't want to install the numa libs, for
-# example, they might not be available in an embedded environment, then
-# compile with
-# make NUMA=0
-ifneq ($(filter x86_64 i386 ia64 mips powerpc,$(machinetype)),)
-NUMA 	:= 1
-endif
-
-# The default is to assume that you only have numa_parse_cpustring
-# If you are sure you have a version of libnuma with numa_parse_cpustring_all
-# then compile with
-# make HAVE_PARSE_CPUSTRING_ALL=1
-ifeq ($(NUMA),1)
-	CFLAGS += -DNUMA
-	NUMA_LIBS = -lnuma
 ifdef HAVE_PARSE_CPUSTRING_ALL
 	CFLAGS += -DHAVE_PARSE_CPUSTRING_ALL
 endif
-endif
 
 include src/arch/android/Makefile
 
@@ -100,7 +84,7 @@ $(OBJDIR):
 -include $(addprefix $(OBJDIR)/,$(sources:.c=.d))
 
 cyclictest: $(OBJDIR)/cyclictest.o $(OBJDIR)/librttest.a
-	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $< $(LIBS) $(RTTESTLIB) $(NUMA_LIBS)
+	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $< $(LIBS) $(RTTESTLIB)
 
 signaltest: $(OBJDIR)/signaltest.o $(OBJDIR)/librttest.a
 	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $< $(LIBS) $(RTTESTLIB)
diff --git a/configure b/configure
new file mode 100755
index 0000000..1d17ef9
--- /dev/null
+++ b/configure
@@ -0,0 +1,116 @@
+#!/bin/sh
+
+build_config=config.mk
+temp_dir=$(mktemp -d)
+temp_file=$temp_dir/file.c
+
+LIBS=
+NUMA_LIBS=
+EXTRA_CFLAGS=
+has_numa=n
+has_numa_cpustring_all=n
+
+build_test()
+{
+	local libs=$*
+	local ret=
+
+	cd $temp_dir
+	cc -o prog $temp_file $libs 2> /dev/null
+	ret=$?
+	cd - > /dev/null
+	return $ret
+}
+
+#
+# -lpthread
+#
+pthread_lib=-lpthread
+
+cat > $temp_file << EOF
+#include <pthread.h>
+static void *func(void *p) { return NULL; }
+int main(void) {
+	pthread_t thread;
+	pthread_create(&thread, 0, func, 0);
+	return 0;
+}
+EOF
+
+if ! build_test $pthread_lib; then
+	echo ERROR: missing pthread library
+	exit 1
+else
+	LIBS="$LIBS $pthread_lib"
+fi
+
+#
+# -lrt
+#
+rt_lib=-lrt
+
+cat > $temp_file << EOF
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+int main(void) {
+	shm_open("", 0, 0);
+	return 0;
+}
+EOF
+
+if ! build_test $rt_lib; then
+	echo ERROR: missing rt library
+	exit 1
+else
+	LIBS="$LIBS $rt_lib"
+fi
+
+#
+# -lnuma
+#
+numa_lib=-lnuma
+
+cat > $temp_file << EOF
+#include <numa.h>
+int main(void) {
+	numa_available();
+	return 0;
+}
+EOF
+
+if build_test $numa_lib; then
+	LIBS="$LIBS $numa_lib"
+	EXTRA_CFLAGS="$EXTRA_CFLAGS -DNUMA"
+	has_numa=y
+fi
+
+#
+# numa_parse_cpustring_all
+#
+if [ $has_numa = "y" ]; then
+
+	cat > $temp_file << EOF
+#include <numa.h>
+int main(void) {
+	numa_parse_cpustring_all("");
+	return 0;
+}
+EOF
+
+	if build_test $numa_lib; then
+		has_numa_cpustring_all=y;
+	fi
+fi
+
+#
+# Write $build_config
+#
+echo "LIBS = $LIBS" > $build_config
+echo "EXTRA_CFLAGS = $EXTRA_CFLAGS" >> $build_config
+
+if [ "$has_numa_cpustring_all" = "y" ]; then
+	echo "HAVE_PARSE_CPUSTRING_ALL := 1" >> $build_config
+fi
+
+rm -rf $temp_dir
-- 
2.5.5