configure: do not strip out debug flags

To allow users to set them when invoking configure without using
--with-debug.

Reported-by: Alex Xu
Fixes #7216
Closes #7267

diff --git a/m4/curl-compilers.m4 b/m4/curl-compilers.m4
index 8886a469a401c7b2c6aefe81f5771a7f1bcc4fd9..485e6017eed3f1b0ff02475f41b4b37b031cbc65 100644 (file)
--- a/m4/curl-compilers.m4
+++ b/m4/curl-compilers.m4
@@ -5,7 +5,7 @@
 #                            | (__| |_| |  _ <| |___
 #                             \___|\___/|_| \_\_____|
 #
-# Copyright (C) 1998 - 2020, Daniel Stenberg, <daniel@haxx.se>, et al.
+# Copyright (C) 1998 - 2021, Daniel Stenberg, <daniel@haxx.se>, et al.
 #
 # This software is licensed as described in the file COPYING, which
 # you should have received as part of this distribution. The terms
@@ -33,9 +33,7 @@ AC_DEFUN([CURL_CHECK_COMPILER], [
   compiler_id="unknown"
   compiler_num="0"
   #
-  flags_dbg_all="unknown"
   flags_dbg_yes="unknown"
-  flags_dbg_off="unknown"
   flags_opt_all="unknown"
   flags_opt_yes="unknown"
   flags_opt_off="unknown"
@@ -106,16 +104,7 @@ AC_DEFUN([CURL_CHECK_COMPILER_CLANG], [
     clangvhi=`echo $clangver | cut -d . -f1`
     clangvlo=`echo $clangver | cut -d . -f2`
     compiler_num=`(expr $clangvhi "*" 100 + $clangvlo) 2>/dev/null`
-    flags_dbg_all="-g -g0 -g1 -g2 -g3"
-    flags_dbg_all="$flags_dbg_all -ggdb"
-    flags_dbg_all="$flags_dbg_all -gstabs"
-    flags_dbg_all="$flags_dbg_all -gstabs+"
-    flags_dbg_all="$flags_dbg_all -gcoff"
-    flags_dbg_all="$flags_dbg_all -gxcoff"
-    flags_dbg_all="$flags_dbg_all -gdwarf-2"
-    flags_dbg_all="$flags_dbg_all -gvms"
     flags_dbg_yes="-g"
-    flags_dbg_off=""
     flags_opt_all="-O -O0 -O1 -O2 -Os -O3 -O4"
     flags_opt_yes="-Os"
     flags_opt_off="-O0"
@@ -137,9 +126,7 @@ AC_DEFUN([CURL_CHECK_COMPILER_DEC_C], [
     test "$curl_cv_have_def___DECC_VER" = "yes"; then
     AC_MSG_RESULT([yes])
     compiler_id="DEC_C"
-    flags_dbg_all="-g -g0 -g1 -g2 -g3"
     flags_dbg_yes="-g2"
-    flags_dbg_off=""
     flags_opt_all="-O -O0 -O1 -O2 -O3 -O4"
     flags_opt_yes="-O1"
     flags_opt_off="-O0"
@@ -175,16 +162,7 @@ AC_DEFUN([CURL_CHECK_COMPILER_GNU_C], [
     gccvhi=`echo $gccver | cut -d . -f1`
     gccvlo=`echo $gccver | cut -d . -f2`
     compiler_num=`(expr $gccvhi "*" 100 + $gccvlo) 2>/dev/null`
-    flags_dbg_all="-g -g0 -g1 -g2 -g3"
-    flags_dbg_all="$flags_dbg_all -ggdb"
-    flags_dbg_all="$flags_dbg_all -gstabs"
-    flags_dbg_all="$flags_dbg_all -gstabs+"
-    flags_dbg_all="$flags_dbg_all -gcoff"
-    flags_dbg_all="$flags_dbg_all -gxcoff"
-    flags_dbg_all="$flags_dbg_all -gdwarf-2"
-    flags_dbg_all="$flags_dbg_all -gvms"
     flags_dbg_yes="-g"
-    flags_dbg_off=""
     flags_opt_all="-O -O0 -O1 -O2 -O3 -Os -Og -Ofast"
     flags_opt_yes="-O2"
     flags_opt_off="-O0"
@@ -205,9 +183,7 @@ AC_DEFUN([CURL_CHECK_COMPILER_HPUX_C], [
   if test "$curl_cv_have_def___HP_cc" = "yes"; then
     AC_MSG_RESULT([yes])
     compiler_id="HP_UX_C"
-    flags_dbg_all="-g -s"
     flags_dbg_yes="-g"
-    flags_dbg_off="-s"
     flags_opt_all="-O +O0 +O1 +O2 +O3 +O4"
     flags_opt_yes="+O2"
     flags_opt_off="+O0"
@@ -227,9 +203,7 @@ AC_DEFUN([CURL_CHECK_COMPILER_IBM_C], [
   if test "$curl_cv_have_def___IBMC__" = "yes"; then
     AC_MSG_RESULT([yes])
     compiler_id="IBM_C"
-    flags_dbg_all="-g -g0 -g1 -g2 -g3"
     flags_dbg_yes="-g"
-    flags_dbg_off=""
     flags_opt_all="-O -O0 -O1 -O2 -O3 -O4 -O5"
     flags_opt_all="$flags_opt_all -qnooptimize"
     flags_opt_all="$flags_opt_all -qoptimize=0"
@@ -261,24 +235,13 @@ AC_DEFUN([CURL_CHECK_COMPILER_INTEL_C], [
     CURL_CHECK_DEF([__unix__], [], [silent])
     if test "$curl_cv_have_def___unix__" = "yes"; then
       compiler_id="INTEL_UNIX_C"
-      flags_dbg_all="-g -g0"
       flags_dbg_yes="-g"
-      flags_dbg_off=""
       flags_opt_all="-O -O0 -O1 -O2 -O3 -Os"
       flags_opt_yes="-O2"
       flags_opt_off="-O0"
     else
       compiler_id="INTEL_WINDOWS_C"
-      flags_dbg_all="/ZI /Zi /zI /zi /ZD /Zd /zD /zd /Z7 /z7 /Oy /Oy-"
-      flags_dbg_all="$flags_dbg_all /debug"
-      flags_dbg_all="$flags_dbg_all /debug:none"
-      flags_dbg_all="$flags_dbg_all /debug:minimal"
-      flags_dbg_all="$flags_dbg_all /debug:partial"
-      flags_dbg_all="$flags_dbg_all /debug:full"
-      flags_dbg_all="$flags_dbg_all /debug:semantic_stepping"
-      flags_dbg_all="$flags_dbg_all /debug:extended"
       flags_dbg_yes="/Zi /Oy-"
-      flags_dbg_off="/debug:none /Oy-"
       flags_opt_all="/O /O0 /O1 /O2 /O3 /Od /Og /Og- /Oi /Oi-"
       flags_opt_yes="/O2"
       flags_opt_off="/Od"
@@ -299,9 +262,7 @@ AC_DEFUN([CURL_CHECK_COMPILER_LCC], [
   if test "$curl_cv_have_def___LCC__" = "yes"; then
     AC_MSG_RESULT([yes])
     compiler_id="LCC"
-    flags_dbg_all="-g"
     flags_dbg_yes="-g"
-    flags_dbg_off=""
     flags_opt_all=""
     flags_opt_yes=""
     flags_opt_off=""
@@ -325,9 +286,7 @@ AC_DEFUN([CURL_CHECK_COMPILER_SGI_MIPS_C], [
     test "$compiler_id" = "unknown"; then
     AC_MSG_RESULT([yes])
     compiler_id="SGI_MIPS_C"
-    flags_dbg_all="-g -g0 -g1 -g2 -g3"
     flags_dbg_yes="-g"
-    flags_dbg_off=""
     flags_opt_all="-O -O0 -O1 -O2 -O3 -Ofast"
     flags_opt_yes="-O2"
     flags_opt_off="-O0"
@@ -352,9 +311,7 @@ AC_DEFUN([CURL_CHECK_COMPILER_SGI_MIPSPRO_C], [
      test "$curl_cv_have_def__COMPILER_VERSION" = "yes"); then
     AC_MSG_RESULT([yes])
     compiler_id="SGI_MIPSPRO_C"
-    flags_dbg_all="-g -g0 -g1 -g2 -g3"
     flags_dbg_yes="-g"
-    flags_dbg_off=""
     flags_opt_all="-O -O0 -O1 -O2 -O3 -Ofast"
     flags_opt_yes="-O2"
     flags_opt_off="-O0"
@@ -374,9 +331,7 @@ AC_DEFUN([CURL_CHECK_COMPILER_SUNPRO_C], [
   if test "$curl_cv_have_def___SUNPRO_C" = "yes"; then
     AC_MSG_RESULT([yes])
     compiler_id="SUNPRO_C"
-    flags_dbg_all="-g -s"
     flags_dbg_yes="-g"
-    flags_dbg_off="-s"
     flags_opt_all="-O -xO -xO1 -xO2 -xO3 -xO4 -xO5"
     flags_opt_yes="-xO2"
     flags_opt_off=""
@@ -396,9 +351,7 @@ AC_DEFUN([CURL_CHECK_COMPILER_TINY_C], [
   if test "$curl_cv_have_def___TINYC__" = "yes"; then
     AC_MSG_RESULT([yes])
     compiler_id="TINY_C"
-    flags_dbg_all="-g -b"
     flags_dbg_yes="-g"
-    flags_dbg_off=""
     flags_opt_all=""
     flags_opt_yes=""
     flags_opt_off=""
@@ -420,17 +373,13 @@ AC_DEFUN([CURL_CHECK_COMPILER_WATCOM_C], [
     CURL_CHECK_DEF([__UNIX__], [], [silent])
     if test "$curl_cv_have_def___UNIX__" = "yes"; then
       compiler_id="WATCOM_UNIX_C"
-      flags_dbg_all="-g1 -g1+ -g2 -g3"
       flags_dbg_yes="-g2"
-      flags_dbg_off=""
       flags_opt_all="-O0 -O1 -O2 -O3"
       flags_opt_yes="-O2"
       flags_opt_off="-O0"
     else
       compiler_id="WATCOM_WINDOWS_C"
-      flags_dbg_all=""
       flags_dbg_yes=""
-      flags_dbg_off=""
       flags_opt_all=""
       flags_opt_yes=""
       flags_opt_off=""
@@ -745,17 +694,11 @@ AC_DEFUN([CURL_SET_COMPILER_DEBUG_OPTS], [
     tmp_options=""
     tmp_CFLAGS="$CFLAGS"
     tmp_CPPFLAGS="$CPPFLAGS"
-    CURL_VAR_STRIP([tmp_CFLAGS],[$flags_dbg_all])
-    CURL_VAR_STRIP([tmp_CPPFLAGS],[$flags_dbg_all])
     #
     if test "$want_debug" = "yes"; then
       AC_MSG_CHECKING([if compiler accepts debug enabling options])
       tmp_options="$flags_dbg_yes"
     fi
-    if test "$want_debug" = "no"; then
-      AC_MSG_CHECKING([if compiler accepts debug disabling options])
-      tmp_options="$flags_dbg_off"
-    fi
     #
     if test "$flags_prefer_cppflags" = "yes"; then
       CPPFLAGS="$tmp_CPPFLAGS $tmp_options"
@@ -766,17 +709,6 @@ AC_DEFUN([CURL_SET_COMPILER_DEBUG_OPTS], [
     fi
     squeeze CPPFLAGS
     squeeze CFLAGS
-    CURL_COMPILER_WORKS_IFELSE([
-      AC_MSG_RESULT([yes])
-      AC_MSG_NOTICE([compiler options added: $tmp_options])
-    ],[
-      AC_MSG_RESULT([no])
-      AC_MSG_WARN([compiler options rejected: $tmp_options])
-      dnl restore initial settings
-      CPPFLAGS="$tmp_save_CPPFLAGS"
-      CFLAGS="$tmp_save_CFLAGS"
-    ])
-    #
   fi
 ])