From patchwork Fri Aug 25 07:46:42 2017
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Subject: [3/5] makedef: Extend the script for use with mingw tools as well
X-Patchwork-Submitter: =?utf-8?q?Martin_Storsj=C3=B6?= <martin@martin.st>
X-Patchwork-Id: 63786
Message-Id: <1503647204-20460-3-git-send-email-martin@martin.st>
To: libav-devel@libav.org
Date: Fri, 25 Aug 2017 10:46:42 +0300
From: =?utf-8?q?Martin_Storsj=C3=B6?= <martin@martin.st>
List-Id: libav development <libav-devel.libav.org>

This is invoked by setting the NM and AR variables to the names of
those specific tools. The ARCH variable also needs to be provided,
to choose the symbol prefix (nm doesn't provide any option that
dumps the architecture easily).
---
Reindented the new if blocks.
---
 compat/windows/makedef | 55 +++++++++++++++++++++++++++++++++++---------------
 1 file changed, 39 insertions(+), 16 deletions(-)

diff --git a/compat/windows/makedef b/compat/windows/makedef
index b3de992..fd7959a 100755
--- a/compat/windows/makedef
+++ b/compat/windows/makedef
@@ -45,7 +45,11 @@ libname=$(mktemp -u "library").lib
 
 trap 'rm -f -- $libname' EXIT
 
-lib -out:${libname} $@ >/dev/null
+if [ -n "$AR" ]; then
+    $AR rcs ${libname} $@ >/dev/null
+else
+    lib -out:${libname} $@ >/dev/null
+fi
 if [ $? != 0 ]; then
     echo "Could not create temporary library." >&2
     exit 1
@@ -57,18 +61,28 @@ IFS='
 # Determine if we're building for x86 or x86_64 and
 # set the symbol prefix accordingly.
 prefix=""
-arch=$(dumpbin -headers ${libname} |
-       tr '\t' ' ' |
-       grep '^ \+.\+machine \+(.\+)' |
-       head -1 |
-       sed -e 's/^ \{1,\}.\{1,\} \{1,\}machine \{1,\}(\(...\)).*/\1/')
-
-if [ "${arch}" = "x86" ]; then
-    prefix="_"
+if [ -n "$NM" ]; then
+    case $ARCH in
+    *86)
+        prefix="_"
+        ;;
+    *)
+        ;;
+    esac
 else
-    if [ "${arch}" != "ARM" ] && [ "${arch}" != "x64" ]; then
-        echo "Unknown machine type." >&2
-        exit 1
+    arch=$(dumpbin -headers ${libname} |
+           tr '\t' ' ' |
+           grep '^ \+.\+machine \+(.\+)' |
+           head -1 |
+           sed -e 's/^ \{1,\}.\{1,\} \{1,\}machine \{1,\}(\(...\)).*/\1/')
+
+    if [ "${arch}" = "x86" ]; then
+        prefix="_"
+    else
+        if [ "${arch}" != "ARM" ] && [ "${arch}" != "x64" ]; then
+            echo "Unknown machine type." >&2
+            exit 1
+        fi
     fi
 fi
 
@@ -112,10 +126,19 @@ for line in $(cat ${vscript} | tr '\t' ' '); do
 '
 done
 
-dump=$(dumpbin -linkermember:1 ${libname} |
-          sed -e '/public symbols/,$!d' -e '/^ \{1,\}Summary/,$d' -e "s/ \{1,\}${prefix}/ /" -e 's/ \{1,\}/ /g' |
-          tail -n +2 |
-          cut -d' ' -f3)
+if [ -n "$NM" ]; then
+    # Use eval, since NM="nm -g"
+    dump=$(eval "$NM --defined-only -g ${libname}" |
+              grep -v : |
+              grep -v ^$ |
+              cut -d' ' -f3 |
+              sed -e "s/^${prefix}//")
+else
+    dump=$(dumpbin -linkermember:1 ${libname} |
+              sed -e '/public symbols/,$!d' -e '/^ \{1,\}Summary/,$d' -e "s/ \{1,\}${prefix}/ /" -e 's/ \{1,\}/ /g' |
+              tail -n +2 |
+              cut -d' ' -f3)
+fi
 
 rm ${libname}