find accurate incpaths from --incs

Change-Id: I0dcd814d3671a5284442749578a5b4f2da5cbc2a

README

 The opensource version of baidu-rpc
+
+BUILD
+
+[ubuntu]
+Must: sudo apt-get install libgflags-dev libprotobuf-dev libprotoc-dev libleveldb-dev libsnappy-dev
+sh config_brpc.sh --incs=/usr/include --libs=/usr/lib
+
+Enable cpu/heap profiler in some examples (not working yet)
+sudo apt-get install libgoogle-perftools-dev libunwind-dev liblzma-dev
+Rerun config_brpc.sh
+set LINK_PERFTOOLS to 1 in the Makefile
+
+[baidu internal]
+Deps: third-64/gflags@gflags_2-0-0-100_PD_BL
+      third-64/protobuf@protobuf_2-4-1-1100_PD_BL
+      third-64/leveldb@leveldb_1-0-0-0_PD_BL
+sh config_brpc.sh --incs=../../../third-64 --libs=../../../third-64
+
+Enable cpu/heap profiler in some examples
+Deps: third-64/tcmalloc@tcmalloc_1-7-0-200_PD_BL
+Rerun config_brpc.sh
+set LINK_PERFTOOLS to 1 in the Makefile

config_brpc.sh

@@ -41,20 +41,33 @@ find_lib_or_die() {
 find_dir_of_header() {
     find ${INCS} -path "*/$1" | sed "s|$1||g"
 }
+find_dir_of_header_or_die() {
+    local dir=$(find_dir_of_header $1)
+    if [ -z "$dir" ]; then
+        >&2 echo "fail to find $1 from -incs"
+        exit 1
+    else
+        echo $dir
+    fi
+}
 
 GFLAGS_LIB=$(find_lib_or_die libgflags.a)
 PROTOBUF_LIB=$(find_lib_or_die libprotobuf.a)
 PROTOC_LIB=$(find_lib_or_die libprotoc.a)
-PROTOC=$(which protoc)
+PROTOC=$(which protoc 2>/dev/null)
 if [ -z "$PROTOC" ]; then
     PROTOC=$(find_lib_or_die protoc)
 fi
-PROTOBUF_INC=$(find_dir_of_header google/protobuf/message.h)
 LEVELDB_LIB=$(find_lib_or_die libleveldb.a)
-SNAPPY_LIB=$(find_lib_or_die libsnappy.a)
+SNAPPY_LIB=$(find_lib libsnappy.a)
+
+GFLAGS_INC=$(find_dir_of_header gflags/gflags.h)
+PROTOBUF_INC=$(find_dir_of_header google/protobuf/message.h)
+LEVELDB_INC=$(find_dir_of_header leveldb/db.h)
+NEW_INCS=$(echo $GFLAGS_INC $PROTOBUF_INC $LEVELDB_INC | sort | uniq)
 
 #can't use \n in texts because sh does not support -e
-echo "INCS=$INCS" > config.mk
+echo "INCS=$NEW_INCS" > config.mk
 echo "LIBS=$GFLAGS_LIB $PROTOBUF_LIB $LEVELDB_LIB $SNAPPY_LIB" >> config.mk
 echo "PROTOC_LIB=$PROTOC_LIB" >> config.mk
 echo "PROTOC=$PROTOC" >> config.mk
@@ -65,6 +78,10 @@ echo "ifeq (\$(LINK_PERFTOOLS), 1)" >> config.mk
 TCMALLOC_LIB=$(find_lib libtcmalloc_and_profiler.a)
 if [ ! -z "$TCMALLOC_LIB" ]; then
     echo "    LIBS+=$TCMALLOC_LIB" >> config.mk
+    TCMALLOC_INC=$(find_dir_of_header google/tcmalloc.h)
+    if [ ! -z "$TCMALLOC_INC" ] && [ "$TCMALLOC_INC" != "$INCS" ]; then
+        echo "    INCS+=$TCMALLOC_INC" >> config.mk
+    fi
 fi
 UNWIND_LIB=$(find_lib libunwind.a)
 if [ ! -z "$UNWIND_LIB" ]; then