编译pngquant的静态版

Question

我正尝试在Oracle Linux Server 7.1版中创建一个静态链接的pngquant版本。我编译了zlib的静态版本和libpng的静态版本。

然后，当我配置pngquant时，我总是得到它将与共享版本的zlib链接的信息。

 
$ ./configure --with-libpng=../libpng-1.6.21 --extra-cflags="-I../zlib-1.2.8" --extra-ldflags="../zlib-1.2.8/libz.a" 

    Compiler: gcc 
    Debug: no 
     SSE: yes 
    OpenMP: no 
    libpng: static (1.6.21) 
     zlib: shared (1.2.7) 
    lcms2: no 

如果我执行make，在输出中看起来这些选项正确传递给编译器。但是，生成的二进制文件需要执行libz.so。看起来我的指令被忽略，或者安装的版本总是优先。

有什么办法强制pngquant与静态版本的zlib一起编译？

Answer 1

对不起，配置脚本不支持它。修改configure以将适当的标志传递给pkg-config或执行与libpng相同的解决方法不应太难。

Answer 2

我不确定，如果我说得对，但是这里有一个pngquant配置的补丁，可以帮助我。 configure现在接受--with-zlib=<dir>作为参数。将它存储到pngquant.patch并与patch -uN -p1 -i pngquant.patch一起使用。

diff -ur pngquant-2.9.0/configure pngquant-2.9.0.fixed/configure 
--- pngquant-2.9.0/configure 2017-03-06 09:37:30.000000000 +0100 
+++ pngquant-2.9.0.fixed/configure 2017-03-07 09:57:20.246012152 +0100 
@@ -48,6 +48,7 @@ 
     help "--with-cocoa/--without-cocoa use Cocoa framework to read images" 
fi 
     help "--with-libpng=<dir>   search for libpng in directory" 
+  help "--with-zlib=<dir>    search for zlib in directory" 
     echo 
     help "CC=<compiler>     use given compiler command" 
     help "CFLAGS=<flags>    pass options to the compiler" 
@@ -97,6 +98,9 @@ 
    --with-libpng=*) 
     LIBPNG_DIR=${i#*=} 
     ;; 
+ --with-zlib=*) 
+  ZLIB_DIR=${i#*=} 
+  ;; 
    --prefix=*) 
     PREFIX=${i#*=} 
     ;; 
@@ -238,6 +242,19 @@ 
    echo "${MAJ}${MIN}" 
} 

+# returns full zlib.h version string 
+zlibh_string() { 
+ echo "$(grep -m1 "define ZLIB_VERSION" "$1" | \ 
+   grep -Eo '"[^"]+"' | grep -Eo '[^"]+')" 
+} 
+ 
+# returns major minor version numbers from png.h 
+zlibh_majmin() { 
+ local MAJ=$(grep -m1 "define ZLIB_VER_MAJOR" "$1" | grep -Eo "[0-9]+") 
+ local MIN=$(grep -m1 "define ZLIB_VER_MINOR" "$1" | grep -Eo "[0-9]+") 
+ echo "${MAJ}${MIN}" 
+} 
+ 
error() { 
    status "$1" "error ... $2" 
    echo 
@@ -420,11 +437,42 @@ 
    error "libpng" "not found (try: $LIBPNG_CMD)" 
fi 

-# zlib 
-if ! find_library "zlib" "z" "zlib.h" "libz.a" "libz.$SOLIBSUFFIX*"; then 
- error "zlib" "not found (please install zlib-devel package)" 
+# try if given flags are enough for zlib 
+HAS_ZLIB=0 
+if echo "#include \"zlib.h\" 
+ int main(){ 
+ uLong test = zlibCompileFlags(); 
+ return 0; 
+}" | "$CC" -xc -std=c99 -o /dev/null $CFLAGS $LDFLAGS - &> /dev/null; then 
+ status "zlib" "custom flags" 
+ HAS_ZLIB=1 
fi 

+if [ "$HAS_ZLIB" -eq 0 ]; then 
+ # try static in the given directory 
+ ZLIBH=$(find_h "$ZLIB_DIR" "zlib.h") 
+ if [ -n "$ZLIBH" ]; then 
+  ZLIBH_STRING=$(zlibh_string "$ZLIBH") 
+  ZLIBH_MAJMIN=$(zlibh_majmin "$ZLIBH") 
+  if [[ -n "$ZLIBH_STRING" && -n "$ZLIBH_MAJMIN" ]]; then 
+   ZLIBA=$(find_f "$ZLIB_DIR" "libz${ZLIBH_MAJMIN}.a") 
+   if [ -z "$ZLIBA" ]; then 
+    ZLIBA=$(find_f "$ZLIB_DIR" "libz.a") 
+   fi 
+   if [ -n "$ZLIBA" ]; then 
+    cflags "-I${ZLIBH%/*}" 
+    lflags "${ZLIBA}" 
+    status "zlib" "static (${ZLIBH_STRING})" 
+    HAS_ZLIB=1 
+   fi 
+  fi 
+ fi 
+fi 
+# zlib 
+#if ! find_library "zlib" "z" "zlib.h" "zlib.a" "zlib.$SOLIBSUFFIX*"; then 
+# error "zlib" "not found (please install zlib-devel package)" 
+#fi 
+ 
# lcms2 
if [ "$LCMS2" != 0 ]; then 
    if find_library "lcms2" "lcms2" "lcms2.h" "liblcms2.a" "liblcms2.$SOLIBSUFFIX*"; then