Fix up configure for platforms that don't use configure.in

Give simple test code a return type (default int isn't valid in C99)
and make some fallback tools executable.

3rdp/build/GNUmakefile

@@ -66,10 +66,10 @@ $(JS_SRC): | $(3RDPSRCDIR)
 $(JS_IDIR): | $(3RDPODIR)
 	$(QUIET)$(IFNOTEXIST) mkdir $(JS_IDIR)
 
-$(JSLIB_BUILD): $(3RDP_ROOT)/dist/libmozjs.tgz $(3RDP_ROOT)/build/js_src_jsnativestack_cpp.patch $(3RDP_ROOT)/build/js-configure.patch $(3RDP_ROOT)/build/js-configure.in.patch $(3RDP_ROOT)/build/imacro-asm-fix.patch $(3RDP_ROOT)/build/js-volatile-outside-functions.patch $(3RDP_ROOT)/build/js-Wno-misleading-indentation.patch $(3RDP_ROOT)/build/js-allow-python3.patch $(3RDP_ROOT)/build/js-no-rwx-pages.patch $(3RDP_ROOT)/build/js-disable-shell.patch $(3RDP_ROOT)/build/js-darwin-configure.patch $(3RDP_ROOT)/build/js-keep-ffi-cache.patch $(3RDP_ROOT)/build/js-config.guess-libffi.patch $(3RDP_ROOT)/build/js-support-mingw-cross.patch | $(JS_SRC) $(JS_IDIR)
+$(JSLIB_BUILD): $(3RDP_ROOT)/dist/libmozjs.tgz $(3RDP_ROOT)/build/js_src_jsnativestack_cpp.patch $(3RDP_ROOT)/build/js-configure.patch $(3RDP_ROOT)/build/js-configure.in.patch $(3RDP_ROOT)/build/imacro-asm-fix.patch $(3RDP_ROOT)/build/js-volatile-outside-functions.patch $(3RDP_ROOT)/build/js-Wno-misleading-indentation.patch $(3RDP_ROOT)/build/js-allow-python3.patch $(3RDP_ROOT)/build/js-no-rwx-pages.patch $(3RDP_ROOT)/build/js-disable-shell.patch $(3RDP_ROOT)/build/js-darwin-configure.patch $(3RDP_ROOT)/build/js-keep-ffi-cache.patch $(3RDP_ROOT)/build/js-config.guess-libffi.patch $(3RDP_ROOT)/build/js-support-mingw-cross.patch $(3RDP_ROOT)/build/js-int-main-conf.patch | $(JS_SRC) $(JS_IDIR)
 	@echo Creating $@ ...
 	$(QUIET)-rm -rf $(JS_SRC)/*
-	$(QUIET)tar -xzC $(JS_SRC) -f $(3RDPDISTDIR)/libmozjs.tgz
+	$(QUIET)tar -xzpC $(JS_SRC) -f $(3RDPDISTDIR)/libmozjs.tgz
 	$(QUIET)echo "pthread_np.h" >> $(JS_SRC)/js-1.8.5/js/src/config/system-headers
 	$(QUIET)patch -b -p0 -d $(JS_SRC)/js-1.8.5 < js_src_jsnativestack_cpp.patch
 	$(QUIET)patch -b -p0 -d $(JS_SRC) < js-configure.patch
@@ -87,8 +87,11 @@ $(JSLIB_BUILD): $(3RDP_ROOT)/dist/libmozjs.tgz $(3RDP_ROOT)/build/js_src_jsnativ
 	$(QUIET)patch -b -p0 -d $(JS_SRC) < js-keep-ffi-cache.patch
 	$(QUIET)patch -b -p0 -d $(JS_SRC) < js-config.guess-libffi.patch
 	$(QUIET)patch -b -p0 -d $(JS_SRC) < js-support-mingw-cross.patch
+	$(QUIET)patch -b -p0 -d $(JS_SRC) < js-int-main-conf.patch
 	-$(QUIET)cd $(JS_SRC)/js-1.8.5/js/src && autoconf-2.13
 	-$(QUIET)cd $(JS_SRC)/js-1.8.5/js/src && autoconf2.13
+	$(QUIET)chmod 0755 $(JS_SRC)/js-1.8.5/js/src/build/hcc
+	$(QUIET)chmod 0755 $(JS_SRC)/js-1.8.5/js/src/build/hcpp
 	$(QUIET)cd $(JS_SRC)/js-1.8.5/js/src && env $(JS_CONFIGURE_ENV) ./configure $(JS_CONFIGURE_ARGS)
 ifdef VERBOSE
 	$(QUIET)$(MAKE) -C $(JS_SRC)/js-1.8.5/js/src

3rdp/build/js-int-main-conf.patch

+--- js-1.8.5/js/src/configure.orig	2024-09-23 18:24:48
++++ js-1.8.5/js/src/configure	2024-09-23 18:32:58
+@@ -1617,7 +1617,7 @@
+ #line 1618 "configure"
+ #include "confdefs.h"
+ 
+-main(){return(0);}
++int main(){return(0);}
+ EOF
+ if { (eval echo configure:1623: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+   ac_cv_prog_cc_works=yes
+@@ -2262,7 +2262,7 @@
+ #line 2263 "configure"
+ #include "confdefs.h"
+ 
+-main(){return(0);}
++int main(){return(0);}
+ EOF
+ if { (eval echo configure:2268: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+   ac_cv_prog_cc_works=yes
+@@ -3471,7 +3471,7 @@
+ if eval "test \"`echo '$''{'ac_cv_prog_cc_${ac_cc}_c_o'+set}'`\" = set"; then
+   echo $ac_n "(cached) $ac_c" 1>&6
+ else
+-  echo 'foo(){}' > conftest.c
++  echo 'int foo(){}' > conftest.c
+ # Make sure it works both with $CC and with simple cc.
+ # We do the test twice because some compilers refuse to overwrite an
+ # existing .o file with -o, though they will create one.
+@@ -11047,7 +11047,7 @@
+ #line 11048 "configure"
+ #include "confdefs.h"
+ 
+-main()
++int main()
+ {
+   char c0 = 0x40, c1 = 0x80, c2 = 0x81;
+   exit(memcmp(&c0, &c2, 1) < 0 && memcmp(&c1, &c2, 1) < 0 ? 0 : 1);
+@@ -13592,7 +13592,7 @@
+ #line 13593 "configure"
+ #include "confdefs.h"
+ #include <stdio.h>
+-main()
++int main()
+ {
+   FILE *f=fopen("conftestval", "w");
+   if (!f) exit(1);