Fix Android build (#15868)

There were the following issues:
* The current versions of packages available at the termux site were obsolete.
* The libintl.h was removed from the Android SDK, so the dgettext and bindtextdomain
  are not available. But they were dummy implementations before anyways, so we can remove
  their usage on Android.
* The detection of the ucol_setMaxVariable needs to be done using the
  check_cxx_symbol_exists instead of check_symbol_exists, since on Android, the
  ICU libraries now depend on C++ runtime.
* The SIZE_T_MAX is already defined in Android headers, so the definition in cgroup.cpp was
  colliding with it.
* The pthread_condattr_setclock detection was using pthread library, but on Android, it is
  located in the "c" library instead. So it was not being detected.

2 files changed, 11 insertions, 10 deletions

diff --git a/src/pal/src/configure.cmake b/src/pal/src/configure.cmake
index 86b5d945b3..d1c7506375 100644
--- a/src/pal/src/configure.cmake
+++ b/src/pal/src/configure.cmake
@@ -38,6 +38,7 @@ check_include_files(sys/prctl.h HAVE_PRCTL_H)
 check_include_files(numa.h HAVE_NUMA_H)
 check_include_files(pthread_np.h HAVE_PTHREAD_NP_H)
 check_include_files("sys/auxv.h;asm/hwcap.h" HAVE_AUXV_HWCAP_H)
+check_include_files("libintl.h" HAVE_LIBINTL_H)
 
 if(NOT CMAKE_SYSTEM_NAME STREQUAL FreeBSD AND NOT CMAKE_SYSTEM_NAME STREQUAL NetBSD)
   set(CMAKE_REQUIRED_FLAGS "-ldl")
@@ -421,7 +422,7 @@ int main()
   exit(ret);
 }" HAVE_CLOCK_MONOTONIC)
 
-check_library_exists(pthread pthread_condattr_setclock "" HAVE_PTHREAD_CONDATTR_SETCLOCK)
+check_library_exists(${PTHREAD_LIBRARY} pthread_condattr_setclock "" HAVE_PTHREAD_CONDATTR_SETCLOCK)
 
 check_cxx_source_runs("
 #include <stdlib.h>
diff --git a/src/pal/src/locale/unicode.cpp b/src/pal/src/locale/unicode.cpp
index 97d4731198..c9c1ae1c4d 100644
--- a/src/pal/src/locale/unicode.cpp
+++ b/src/pal/src/locale/unicode.cpp
@@ -37,9 +37,9 @@ Revision History:
 
 #include <pthread.h>
 #include <locale.h>
-#ifndef __APPLE__
+#if HAVE_LIBINTL_H
 #include <libintl.h>
-#endif // __APPLE__
+#endif // HAVE_LIBINTL_H
 #include <errno.h>
 #if HAVE_COREFOUNDATION
 #include <CoreFoundation/CoreFoundation.h>
@@ -915,7 +915,7 @@ BOOL
 PALAPI
 PAL_BindResources(IN LPCSTR lpDomain)
 {
-#ifndef __APPLE__
+#if HAVE_LIBINTL_H
     _ASSERTE(g_szCoreCLRPath != NULL);
     char * coreCLRDirectoryPath;
     PathCharString coreCLRDirectoryPathPS;
@@ -931,10 +931,10 @@ PAL_BindResources(IN LPCSTR lpDomain)
     LPCSTR boundPath = bindtextdomain(lpDomain, coreCLRDirectoryPath);
 
     return boundPath != NULL;
-#else // __APPLE__
-    // UNIXTODO: Implement for OSX if necessary
+#else // HAVE_LIBINTL_H
+    // UNIXTODO: Implement for Unixes without libintl if necessary
     return TRUE;
-#endif // __APPLE__
+#endif // HAVE_LIBINTL_H
 }
 
 /*++
@@ -955,16 +955,16 @@ PAL_GetResourceString(
         IN int cchWideChar
       )
 {
-#ifndef __APPLE__
+#if HAVE_LIBINTL_H
     // NOTE: dgettext returns the key if it fails to locate the appropriate
     // resource. In our case, that will be the English string.
     LPCSTR resourceString = dgettext(lpDomain, lpResourceStr);
-#else // __APPLE__
+#else // HAVE_LIBINTL_H
     // UNIXTODO: Implement for OSX using the native localization API 
 
     // This is a temporary solution until we add the real native resource support.
     LPCSTR resourceString = lpResourceStr;
-#endif // __APPLE__
+#endif // HAVE_LIBINTL_H
 
     int length = strlen(resourceString);
     return UTF8ToUnicode(lpResourceStr, length + 1, lpWideCharStr, cchWideChar, 0);