From b0b5c31821b961ac96061c7e2868021b29a803cb Mon Sep 17 00:00:00 2001
From: Doug Coleman <doug.coleman@gmail.com>
Date: Sun, 7 Jun 2020 11:30:43 -0500
Subject: [PATCH] build.sh: Change WORD size detection to use preprocessor.

---
 build.sh | 19 ++++++++++++++-----
 1 file changed, 14 insertions(+), 5 deletions(-)

diff --git a/build.sh b/build.sh
index c7647f9478..146e46d619 100755
--- a/build.sh
+++ b/build.sh
@@ -300,6 +300,9 @@ find_architecture() {
        ppc64) ARCH=ppc;;
        *86) ARCH=x86;;
        *86_64) ARCH=x86;;
+       iPhone5*[3-9]) ARCH=arm64;;
+       iPhone[6-9]*) ARCH=arm64;;
+       iPhone[1-9][0-9]*) ARCH=arm64;;
        "Power Macintosh") ARCH=ppc;;
     esac
 }
@@ -311,8 +314,8 @@ find_num_cores() {
     check_ret uname
     case $uname_s in
         CYGWIN_NT-5.2-WOW64 | *CYGWIN_NT* | *CYGWIN* | MINGW32*) NUM_CORES=$NUMBER_OF_PROCESSORS;;
-        *darwin* | *Darwin* | *linux* | *Linux*) NUM_CORES=$(getconf _NPROCESSORS_ONLN);;
-        freebsd) NUM_CORES=$(sysctl -n hw.ncpu);;
+        *linux* | *Linux*) NUM_CORES=$(getconf _NPROCESSORS_ONLN || nproc);;
+        *darwin* | *Darwin* | freebsd) NUM_CORES=$(sysctl -n hw.ncpu);;
     esac
 }
 
@@ -327,7 +330,7 @@ c_find_word_size() {
     echo_test_program | $CC -o $C_WORD -xc -
     check_ret $CC
     ./$C_WORD
-    WORD=$?
+    WORD_OUT=$?
     case $WORD in
         32) ;;
         64) ;;
@@ -335,8 +338,8 @@ c_find_word_size() {
             echo "Word size should be 32/64, got $WORD"
             exit_script 15;;
     esac
-
     $DELETE -f $C_WORD
+    echo "$WORD_OUT"
 }
 
 intel_macosx_word_size() {
@@ -357,10 +360,16 @@ find_word_size() {
     if [[ $OS == macosx && $ARCH == x86 ]] ; then
         intel_macosx_word_size
     else
-        c_find_word_size
+        WORD=$(find_word_size_cpp || c_find_word_size)
     fi
 }
 
+find_word_size_cpp() {
+    SIXTY_FOUR='defined(__aarch64__) || defined(__x86_64__) || defined(_M_AMD64) || defined(__PPC64__) || defined(__64BIT__)'
+    THIRTY_TWO='defined(i386) || defined(__i386) || defined(__i386__) || defined(_MIX86)'
+    cc -E -xc <(echo -e "#if ${SIXTY_FOUR}\n64\n#elif ${THIRTY_TWO}\n32\n#endif") | tail -1
+}
+
 set_factor_binary() {
     case $OS in
         windows) FACTOR_BINARY=factor.com;;
-- 
2.34.1