构建 GDB 安卓答案

【问题标题】：Build GDB android构建 GDB 安卓
【发布时间】：2015-03-02 18:09:02
【问题描述】：

我正在尝试构建 GDB，我已经从这里查看了源代码：

https://secure-web.cisco.com/1gNMaTaLSpyPf04-64vyJyKpMnhYszFwToxEd5acy6VS3P271v2Vw2kWu-o5O16GAU92fTpsG5ezF48gddoDV7Adx8PaRyVUyENTYoGhf4DAL5SCpsboaD9mL8rtLqTcK7yirl321lqD9Cfnoz5vju88CQIffq80iTEn4g5SSY7g/https%3A%2F%2Fandroid.googlesource.com%2Ftoolchain%2Fgdb.git

我正在使用与编译我的 NDK 应用程序相同的工具链，将 bin 文件夹添加到我的路径并运行配置脚本：

./configure --host=arm-linux-androideabi

我收到此构建错误：

.././libiberty/getpagesize.c:64:1：错误：重新定义“getpagesize” /home/xxxxx/android-ndk/arm_a14_tools/bin/../sysroot/usr/include/unistd.h:174:23：注意：“getpagesize”的先前定义在这里 Makefile：679：目标“getpagesize.o”的配方失败 make[2]: *** [getpagesize.o] 错误 1 你有什么想法吗？

【问题讨论】：

标签： android linux android-ndk gdb cross-platform

【解决方案1】：

我也遇到过。我找到了两个解决方案。

1 diff --git a/libiberty/configure b/libiberty/configure
index d8890a1..720dc5e 100755
--- a/libiberty/configure
+++ b/libiberty/configure
@@ -6248,6 +6248,12 @@  if test -z "${setobjs}"; then

   case "${host}" in

+  *-*-android*)
+    # On android, getpagesize is defined in unistd.h as a static inline
+    # function, which AC_CHECK_FUNCS does not handle properly.
+    ac_cv_func_getpagesize=yes
+    ;;
+
   *-*-mingw32*)
     # Under mingw32, sys_nerr and sys_errlist exist, but they are
     # macros, so the test below won't find them.
diff --git a/libiberty/configure.ac b/libiberty/configure.ac
index 868be8e..e21e3aa 100644
--- a/libiberty/configure.ac
+++ b/libiberty/configure.ac
@@ -600,6 +600,12 @@  if test -z "${setobjs}"; then

   case "${host}" in

+  *-*-android*)
+    # On android, getpagesize is defined in unistd.h as a static inline
+    # function, which AC_CHECK_FUNCS does not handle properly.
+    ac_cv_func_getpagesize=yes
+    ;;
+
   *-*-mingw32*)
     # Under mingw32, sys_nerr and sys_errlist exist, but they are
     # macros, so the test below won't find them.

参考：https://patchwork.ozlabs.org/patch/541034/

2 作为一种快速修复技巧，暂时注释掉该部分在 unistd.h 中：

#if 0
static __inline__ int getpagesize(void) {
  extern unsigned int __page_size;
  return __page_size;
}
#endif

参考：http://permalink.gmane.org/gmane.comp.gdb.devel/33166

【讨论】：