【背景】
之前在：
已经写成了：
#classpath := $(INDEXER_JAR):$(TAGSOUP_JAR):$(LUCENE_ANALYZER_JAR):$(LUCENE_CORE_JAR) #【已解决】docbook中去make webhelp编译webhelp结果出错：Error: Could not find or load main class com.nexwave.nquindexer.IndexerMain #https://www.crifan.com/docbook_make_webhelp_error__could_not_find_or_load_main_class_com_nexwave_nquindexer_indexermain/ OS_NAME = $(shell uname -o) LC_OS_NAME = $(shell echo $(OS_NAME) | tr '[A-Z]' '[a-z]') ifeq ($(LC_OS_NAME), cygwin) classpath := "$(INDEXER_JAR);$(TAGSOUP_JAR);$(LUCENE_ANALYZER_JAR);$(LUCENE_CORE_JAR)" else classpath := $(INDEXER_JAR):$(TAGSOUP_JAR):$(LUCENE_ANALYZER_JAR):$(LUCENE_CORE_JAR) endif
然后此处，继续去：
对于classpath的路径，
至少是对于当前的cygwin，是windows的平台，
还是想要先从环境变量中获得原先的java的CLASSPATH的值
再去加上当前的要设置的classpath路径，
并且最后加上引号，
这样就实现了，在不影响路径的前提下，解决了cygwin中路径带空格等问题，
保证所用到的classpath的值，
是当前已经设置好的java的CLASSPATH，加上当前针对docbook的webhelp的classpath的值。
【折腾过程】
1.这就涉及到，makefile中，先要获得，环境变量中，已有的CLASSPATH的值是如何。
2.关于这部分，涉及到makefile中的，给变量赋值，的几种方式
- :=
- ?=
- +=
- =
需要去参考之前：
总结的makefile的在线文档：
3.学习到的是：
- =赋值：(recursively expanded)递归扩展变量
- :=赋值：(simply expanded)简单扩展变量
但是看了：
6.2 The Two Flavors of Variables
的解释，还是很晕，很复杂。。
4.还是只是去看看：
6.9 Variables from the Environment
然后去试试：
CLASSPATH_FROM_ENV = $(CLASSPATH) test_classpath: @echo $(CLASSPATH_FROM_ENV)
结果是：
无法执行：
CLi@PC-CLI-1 ~/develop/docbook/books/crifanlib_python/src $ make test_classpath . /bin/sh: C:Program: command not found /bin/sh: D:DevToolDD_ParserParserANTLRantlrantlr-4.0-complete.jar: command not found make: *** [test_classpath] Error 127
5.再去试试：
#CLASSPATH_FROM_ENV = $(CLASSPATH) CLASSPATH_FROM_ENV := $(CLASSPATH) test_classpath: @echo $(CLASSPATH_FROM_ENV)
结果：
CLi@PC-CLI-1 ~/develop/docbook/books/crifanlib_python/src $ make test_classpath . /bin/sh: C:Program: command not found /bin/sh: D:DevToolDD_ParserParserANTLRantlrantlr-4.0-complete.jar: command not found make: *** [test_classpath] Error 127
6.再去试试：
CLi@PC-CLI-1 ~/develop/docbook/books/crifanlib_python/src $ echo $CLASSPATH .;C:\Program Files\Java\jdk1.7.0_11\jre\lib\rt.jar;D:\DevTool\DD_Parser\Parser\ANTLR\antlr\antlr-4.0-complete.jar;
以及：
#CLASSPATH_FROM_ENV = $(CLASSPATH) #CLASSPATH_FROM_ENV := $(CLASSPATH) CLASSPATH_FROM_ENV ?= $(CLASSPATH) test_classpath: @echo "$(CLASSPATH_FROM_ENV)"
结果是：
CLi@PC-CLI-1 ~/develop/docbook/books/crifanlib_python/src $ make test_classpath .;C:\Program Files\Java\jdk1.7.0_11\jre\lib\rt.jar;D:\DevTool\DD_Parser\Parser\ANTLR\antlr\antlr-4.0-complete.jar;
7.再回去试试：
#CLASSPATH_FROM_ENV = $(CLASSPATH) CLASSPATH_FROM_ENV := $(CLASSPATH) #CLASSPATH_FROM_ENV ?= $(CLASSPATH) test_classpath: @echo "$(CLASSPATH_FROM_ENV)"
结果是：
CLi@PC-CLI-1 ~/develop/docbook/books/crifanlib_python/src $ make test_classpath .;C:\Program Files\Java\jdk1.7.0_11\jre\lib\rt.jar;D:\DevTool\DD_Parser\Parser\ANTLR\antlr\antlr-4.0-complete.jar;
8.试试：
CLASSPATH_FROM_ENV = $(CLASSPATH) #CLASSPATH_FROM_ENV := $(CLASSPATH) #CLASSPATH_FROM_ENV ?= $(CLASSPATH) test_classpath: @echo "$(CLASSPATH_FROM_ENV)"
结果是：
CLi@PC-CLI-1 ~/develop/docbook/books/crifanlib_python/src $ make test_classpath .;C:\Program Files\Java\jdk1.7.0_11\jre\lib\rt.jar;D:\DevTool\DD_Parser\Parser\ANTLR\antlr\antlr-4.0-complete.jar;
9.然后可以继续去加上后面的值了。
最后是，用：
# ================================================= # You probably don't need to change anything below # unless you choose to add a validation step. # ================================================ INDEXER_JAR := $(TOOLS_XSL_NS_EXTENSIONS)/webhelpindexer.jar TAGSOUP_JAR := $(TOOLS_XSL_NS_EXTENSIONS)/tagsoup-1.2.1.jar LUCENE_ANALYZER_JAR := $(TOOLS_XSL_NS_EXTENSIONS)/lucene-analyzers-3.0.0.jar LUCENE_CORE_JAR := $(TOOLS_XSL_NS_EXTENSIONS)/lucene-core-3.0.0.jar #manually set value for test in linux OS_NAME_LOWCASE=linux CLASSPATH=.:/usr/bin/java CLASSPATH_FROM_ENV = $(CLASSPATH) #CLASSPATH_FROM_ENV := $(CLASSPATH) #CLASSPATH_FROM_ENV ?= $(CLASSPATH) #WEBHELP_CLASSPATH := $(INDEXER_JAR):$(TAGSOUP_JAR):$(LUCENE_ANALYZER_JAR):$(LUCENE_CORE_JAR) #under Windows(Cygwin), (java classpath) #(1)path seperator is semicolon ';' (not Linux's colon ':') #(2) command contain semicolon means multile command, so need quote # so become -> "path1;path2;path3" #detail can refer: #【已解决】docbook中去make webhelp编译webhelp结果出错：Error: Could not find or load main class com.nexwave.nquindexer.IndexerMain #https://www.crifan.com/docbook_make_webhelp_error__could_not_find_or_load_main_class_com_nexwave_nquindexer_indexermain/ ifeq ($(OS_NAME_LOWCASE), cygwin) PATH_DELIMITER = ; else PATH_DELIMITER = : endif #WEBHELP_CLASSPATH := "$(INDEXER_JAR);$(TAGSOUP_JAR);$(LUCENE_ANALYZER_JAR);$(LUCENE_CORE_JAR)" #WEBHELP_CLASSPATH := $(INDEXER_JAR):$(TAGSOUP_JAR):$(LUCENE_ANALYZER_JAR):$(LUCENE_CORE_JAR) #WEBHELP_CLASSPATH := "$(CLASSPATH_FROM_ENV)$(PATH_DELIMITER)$(INDEXER_JAR)$(PATH_DELIMITER)$(TAGSOUP_JAR)$(PATH_DELIMITER)$(LUCENE_ANALYZER_JAR)$(PATH_DELIMITER)$(LUCENE_CORE_JAR)" #WEBHELP_CLASSPATH = "$(INDEXER_JAR)$(PATH_DELIMITER)$(TAGSOUP_JAR)$(PATH_DELIMITER)$(LUCENE_ANALYZER_JAR)$(PATH_DELIMITER)$(LUCENE_CORE_JAR)$(PATH_DELIMITER)$(CLASSPATH_FROM_ENV)" WEBHELP_CLASSPATH := "$(INDEXER_JAR)$(PATH_DELIMITER)$(TAGSOUP_JAR)$(PATH_DELIMITER)$(LUCENE_ANALYZER_JAR)$(PATH_DELIMITER)$(LUCENE_CORE_JAR)$(PATH_DELIMITER)$(CLASSPATH_FROM_ENV)" test_classpath: @echo "CLASSPATH_FROM_ENV=$(CLASSPATH_FROM_ENV)" @echo "OS_NAME_LOWCASE=$(OS_NAME_LOWCASE)" @echo "PATH_DELIMITER=$(PATH_DELIMITER)" @echo $(WEBHELP_CLASSPATH)
可以得到要的输出：
CLi@PC-CLI-1 ~/develop/docbook/books/crifanlib_python/src $ make test_classpath CLASSPATH_FROM_ENV=.:/usr/bin/java OS_NAME_LOWCASE=linux PATH_DELIMITER=: D:/tmp/tmp_dev_root/cgwin/home/CLi/develop/docbook/tools/docbook-xsl-ns-1.78.1/extensions/webhelpindexer.jar:D:/tmp/tmp_dev_root/cgwin/home/CLi/develop/docbook/tools/docbook-xsl-ns-1.78.1/extensions/tagsoup-1.2.1.jar:D:/tmp/tmp_dev_root/cgwin/home/CLi/develop/docbook/tools/docbook-xsl-ns-1.78.1/extensions/lucene-analyzers-3.0.0.jar:D:/tmp/tmp_dev_root/cgwin/home/CLi/develop/docbook/tools/docbook-xsl-ns-1.78.1/extensions/lucene-core-3.0.0.jar:.:/usr/bin/java
不加针对linux的测试的赋值，回到正常的此处的cygwin时：
# ================================================= # You probably don't need to change anything below # unless you choose to add a validation step. # ================================================ INDEXER_JAR := $(TOOLS_XSL_NS_EXTENSIONS)/webhelpindexer.jar TAGSOUP_JAR := $(TOOLS_XSL_NS_EXTENSIONS)/tagsoup-1.2.1.jar LUCENE_ANALYZER_JAR := $(TOOLS_XSL_NS_EXTENSIONS)/lucene-analyzers-3.0.0.jar LUCENE_CORE_JAR := $(TOOLS_XSL_NS_EXTENSIONS)/lucene-core-3.0.0.jar #manually set value for test in linux #OS_NAME_LOWCASE=linux #CLASSPATH=.:/usr/bin/java CLASSPATH_FROM_ENV = $(CLASSPATH) #CLASSPATH_FROM_ENV := $(CLASSPATH) #CLASSPATH_FROM_ENV ?= $(CLASSPATH) #WEBHELP_CLASSPATH := $(INDEXER_JAR):$(TAGSOUP_JAR):$(LUCENE_ANALYZER_JAR):$(LUCENE_CORE_JAR) #under Windows(Cygwin), (java classpath) #(1)path seperator is semicolon ';' (not Linux's colon ':') #(2) command contain semicolon means multile command, so need quote # so become -> "path1;path2;path3" #detail can refer: #【已解决】docbook中去make webhelp编译webhelp结果出错：Error: Could not find or load main class com.nexwave.nquindexer.IndexerMain #https://www.crifan.com/docbook_make_webhelp_error__could_not_find_or_load_main_class_com_nexwave_nquindexer_indexermain/ ifeq ($(OS_NAME_LOWCASE), cygwin) PATH_DELIMITER = ; else PATH_DELIMITER = : endif #WEBHELP_CLASSPATH := "$(INDEXER_JAR);$(TAGSOUP_JAR);$(LUCENE_ANALYZER_JAR);$(LUCENE_CORE_JAR)" #WEBHELP_CLASSPATH := $(INDEXER_JAR):$(TAGSOUP_JAR):$(LUCENE_ANALYZER_JAR):$(LUCENE_CORE_JAR) #WEBHELP_CLASSPATH := "$(CLASSPATH_FROM_ENV)$(PATH_DELIMITER)$(INDEXER_JAR)$(PATH_DELIMITER)$(TAGSOUP_JAR)$(PATH_DELIMITER)$(LUCENE_ANALYZER_JAR)$(PATH_DELIMITER)$(LUCENE_CORE_JAR)" #WEBHELP_CLASSPATH = "$(INDEXER_JAR)$(PATH_DELIMITER)$(TAGSOUP_JAR)$(PATH_DELIMITER)$(LUCENE_ANALYZER_JAR)$(PATH_DELIMITER)$(LUCENE_CORE_JAR)$(PATH_DELIMITER)$(CLASSPATH_FROM_ENV)" WEBHELP_CLASSPATH := "$(INDEXER_JAR)$(PATH_DELIMITER)$(TAGSOUP_JAR)$(PATH_DELIMITER)$(LUCENE_ANALYZER_JAR)$(PATH_DELIMITER)$(LUCENE_CORE_JAR)$(PATH_DELIMITER)$(CLASSPATH_FROM_ENV)" test_classpath: @echo "CLASSPATH_FROM_ENV=$(CLASSPATH_FROM_ENV)" @echo "OS_NAME_LOWCASE=$(OS_NAME_LOWCASE)" @echo "PATH_DELIMITER=$(PATH_DELIMITER)" @echo $(WEBHELP_CLASSPATH)
结果是：
CLi@PC-CLI-1 ~/develop/docbook/books/crifanlib_python/src $ make test_classpath CLASSPATH_FROM_ENV=.;C:\Program Files\Java\jdk1.7.0_11\jre\lib\rt.jar;D:\DevTool\DD_Parser\Parser\ANTLR\antlr\antlr-4.0-complete.jar; OS_NAME_LOWCASE=cygwin PATH_DELIMITER=; D:/tmp/tmp_dev_root/cgwin/home/CLi/develop/docbook/tools/docbook-xsl-ns-1.78.1/extensions/webhelpindexer.jar;D:/tmp/tmp_dev_root/cgwin/home/CLi/develop/docbook/tools/docbook-xsl-ns-1.78.1/extensions/tagsoup-1.2.1.jar;D:/tmp/tmp_dev_root/cgwin/home/CLi/develop/docbook/tools/docbook-xsl-ns-1.78.1/extensions/lucene-analyzers-3.0.0.jar;D:/tmp/tmp_dev_root/cgwin/home/CLi/develop/docbook/tools/docbook-xsl-ns-1.78.1/extensions/lucene-core-3.0.0.jar;.;C:\Program Files\Java\jdk1.7.0_11\jre\lib\rt.jar;D:\DevTool\DD_Parser\Parser\ANTLR\antlr\antlr-4.0-complete.jar;
【总结】
1.此处，从cygwin中，makefile中，从环境变量中获得对应的，windows的Java的CLASSPATH 的值，直接使用：
CLASSPATH_FROM_ENV = $(CLASSPATH)
即可。
写成：
CLASSPATH_FROM_ENV := $(CLASSPATH)
或：
CLASSPATH_FROM_ENV ?= $(CLASSPATH)
都可以。
2.然后此处，要先获得Java的CLASSPATH
然后判断当前os类型是cygwin还是linux，
决定路径的分隔符是分号还是冒号
然后再加上当前docbook的webhelp的classpath的路径
最终是使用：
# ================================================= # You probably don't need to change anything below # unless you choose to add a validation step. # ================================================ INDEXER_JAR := $(TOOLS_XSL_NS_EXTENSIONS)/webhelpindexer.jar TAGSOUP_JAR := $(TOOLS_XSL_NS_EXTENSIONS)/tagsoup-1.2.1.jar LUCENE_ANALYZER_JAR := $(TOOLS_XSL_NS_EXTENSIONS)/lucene-analyzers-3.0.0.jar LUCENE_CORE_JAR := $(TOOLS_XSL_NS_EXTENSIONS)/lucene-core-3.0.0.jar #manually set value for test in linux #OS_NAME_LOWCASE=linux #CLASSPATH=.:/usr/bin/java CLASSPATH_FROM_ENV = $(CLASSPATH) #CLASSPATH_FROM_ENV := $(CLASSPATH) #CLASSPATH_FROM_ENV ?= $(CLASSPATH) #WEBHELP_CLASSPATH := $(INDEXER_JAR):$(TAGSOUP_JAR):$(LUCENE_ANALYZER_JAR):$(LUCENE_CORE_JAR) #under Windows(Cygwin), (java classpath) #(1)path seperator is semicolon ';' (not Linux's colon ':') #(2) command contain semicolon means multile command, so need quote # so become -> "path1;path2;path3" #detail can refer: #【已解决】docbook中去make webhelp编译webhelp结果出错：Error: Could not find or load main class com.nexwave.nquindexer.IndexerMain #https://www.crifan.com/docbook_make_webhelp_error__could_not_find_or_load_main_class_com_nexwave_nquindexer_indexermain/ ifeq ($(OS_NAME_LOWCASE), cygwin) PATH_DELIMITER = ; else PATH_DELIMITER = : endif #WEBHELP_CLASSPATH := "$(INDEXER_JAR);$(TAGSOUP_JAR);$(LUCENE_ANALYZER_JAR);$(LUCENE_CORE_JAR)" #WEBHELP_CLASSPATH := $(INDEXER_JAR):$(TAGSOUP_JAR):$(LUCENE_ANALYZER_JAR):$(LUCENE_CORE_JAR) #WEBHELP_CLASSPATH := "$(CLASSPATH_FROM_ENV)$(PATH_DELIMITER)$(INDEXER_JAR)$(PATH_DELIMITER)$(TAGSOUP_JAR)$(PATH_DELIMITER)$(LUCENE_ANALYZER_JAR)$(PATH_DELIMITER)$(LUCENE_CORE_JAR)" #WEBHELP_CLASSPATH = "$(INDEXER_JAR)$(PATH_DELIMITER)$(TAGSOUP_JAR)$(PATH_DELIMITER)$(LUCENE_ANALYZER_JAR)$(PATH_DELIMITER)$(LUCENE_CORE_JAR)$(PATH_DELIMITER)$(CLASSPATH_FROM_ENV)" WEBHELP_CLASSPATH := "$(INDEXER_JAR)$(PATH_DELIMITER)$(TAGSOUP_JAR)$(PATH_DELIMITER)$(LUCENE_ANALYZER_JAR)$(PATH_DELIMITER)$(LUCENE_CORE_JAR)$(PATH_DELIMITER)$(CLASSPATH_FROM_ENV)" test_classpath: @echo "CLASSPATH_FROM_ENV=$(CLASSPATH_FROM_ENV)" @echo "OS_NAME_LOWCASE=$(OS_NAME_LOWCASE)" @echo "PATH_DELIMITER=$(PATH_DELIMITER)" @echo $(WEBHELP_CLASSPATH)
的配置，而使得后面的，docbook在makefile中去处理webhelp：
webhelp_index:
java \
-DhtmlDir=$(OUTPUT_DIR_WEBHELP) \
-DindexerLanguage=$(WEBHELP_INDEX_LANGUAGE) \
-DhtmlExtension=html \
-DdoStem=true \
-DindexerExcludedFiles=$(INDEXER_EXCLUDED_FILES) \
-Dorg.xml.sax.driver=org.ccil.cowan.tagsoup.Parser \
-Djavax.xml.parsers.SAXParserFactory=org.ccil.cowan.tagsoup.jaxp.SAXFactoryImpl \
-classpath $(WEBHELP_CLASSPATH) \
com.nexwave.nquindexer.IndexerMain
mkdir -p ${OUTPUT_DIR_WEBHELP}/search
cp -r $(TOOLS_XSL_NS_WEBHELP)/template/search/* ${OUTPUT_DIR_WEBHELP}/search就是正常的了。
转载请注明：在路上 » 【记录】cygwin中给docbook的webhelp中的classpath的值加上环境变量中已有的java的CLASSPATH