build: fix makefile script on windows

On Windows there is a program "find.exe" located in
C:\Windows\System32, which is usually in the PATH before
MSYS version of that program (required for running makefile).
The Windows version of the program uses different CLI syntax,
which results in errors like

  "File not found - *node_modules*"

This commit specifies the full path to the program, which is also
properly handled by MSYS on Windows.

PR-URL: nodejs#33136
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>

Makefile

@@ -17,6 +17,7 @@ GNUMAKEFLAGS += --no-print-directory
 GCOV ?= gcov
 PWD = $(CURDIR)
 BUILD_WITH ?= make
+FIND ?= find
 
 ifdef JOBS
 	PARALLEL_ARGS = -j $(JOBS)
@@ -168,7 +169,7 @@ uninstall: ## Uninstalls node from $PREFIX (default=/usr/local).
 clean: ## Remove build artifacts.
 	$(RM) -r out/Makefile $(NODE_EXE) $(NODE_G_EXE) out/$(BUILDTYPE)/$(NODE_EXE) \
 		out/$(BUILDTYPE)/node.exp
-	@if [ -d out ]; then find out/ -name '*.o' -o -name '*.a' -o -name '*.d' | xargs $(RM) -r; fi
+	@if [ -d out ]; then $(FIND) out/ -name '*.o' -o -name '*.a' -o -name '*.d' | xargs $(RM) -r; fi
 	$(RM) -r node_modules
 	@if [ -d deps/icu ]; then echo deleting deps/icu; $(RM) -r deps/icu; fi
 	$(RM) test.tap
@@ -1204,7 +1205,7 @@ LINT_MD_NEWER = -newer tools/.mdlintstamp
 endif
 
 LINT_MD_TARGETS = doc src lib benchmark test tools/doc tools/icu $(wildcard *.md)
-LINT_MD_FILES = $(shell find $(LINT_MD_TARGETS) -type f \
+LINT_MD_FILES = $(shell $(FIND) $(LINT_MD_TARGETS) -type f \
 	! -path '*node_modules*' ! -path 'test/fixtures/*' -name '*.md' \
 	$(LINT_MD_NEWER))
 run-lint-md = tools/lint-md.js -q -f --no-stdout $(LINT_MD_FILES)
@@ -1383,7 +1384,7 @@ CONFLICT_RE=^>>>>>>> [0-9A-Fa-f]+|^<<<<<<< [A-Za-z]+
 # Related CI job: node-test-linter
 lint-ci: lint-js-ci lint-cpp lint-py lint-md lint-addon-docs
 	@if ! ( grep -IEqrs "$(CONFLICT_RE)" benchmark deps doc lib src test tools ) \
-		&& ! ( find . -maxdepth 1 -type f | xargs grep -IEqs "$(CONFLICT_RE)" ); then \
+		&& ! ( $(FIND) . -maxdepth 1 -type f | xargs grep -IEqs "$(CONFLICT_RE)" ); then \
 		exit 0 ; \
 	else \
 		echo "" >&2 ; \

configure.py

@@ -1796,6 +1796,10 @@ def make_bin_override():
 if options.use_ninja:
   config['BUILD_WITH'] = 'ninja'
 
+# On Windows there is another find.exe in C:\Windows\System32
+if sys.platform == 'win32':
+  config['FIND'] = '/usr/bin/find'
+
 config_lines = ['='.join((k,v)) for k,v in config.items()]
 # Add a blank string to get a blank line at the end.
 config_lines += ['']