Modified DPKG_C_GCC_TRY_WARNS() to call AC_SUBST, so that we can use the

result of the test during build time.

ChangeLog

@@ -1,3 +1,9 @@
+Sat Dec 23 19:33:05 CST 2000 Adam Heath <doogie@debian.org>
+
+  * automake/dpkg.m4, configure.in, Makefile.conf.in:
+    Modified DPKG_C_GCC_TRY_WARNS() to call AC_SUBST, so that we can
+    use the result of the test during build time.
+
 Sat Dec 23 16:44:25 CST 2000 Adam Heath <doogie@debian.org>
 
   * main/depcon.c: Added description for "suggests" in describedepcon().

Makefile.conf.in

@@ -38,6 +38,11 @@ PERL			= @PERL@
 mkinstalldirs		= $(SHELL) $(top_srcdir)/mkinstalldirs
 LN			= @LN_S@
 
+WARN_ALL		= @WARN_ALL@
+WARN_WRITESTRINGS	= @WARN_WRITESTRINGS@
+WARN_POINTERMATH	= @WARN_POINTERMATH@
+WARN_IMPLICIT		= @WARN_IMPLICIT@
+
 CC			= @CC@
 CFLAGS			= @CFLAGS@
 INSTALL			= @INSTALL@
@@ -65,7 +70,7 @@ SSD_LIBS		= @SSD_LIBS@
 ZLIB_CFLAGS		= @ZLIB_CFLAGS@
 ZLIB_LIBS		= @ZLIB_LIBS@
 
-ALL_CFLAGS		= $(CFLAGS) $(DEFS) $(NLS_CFLAGS) $(INCLUDE_CFLAGS) $(ZLIB_CFLAGS)
+ALL_CFLAGS		= $(CFLAGS) $(DEFS) $(NLS_CFLAGS) $(INCLUDE_CFLAGS) $(ZLIB_CFLAGS) $(WARN_ALL) $(WARN_WRITESTRINGS) $(WARN_POINTERMATH) $(WARN_IMPLICIT)
 ALL_CXXFLAGS		= $(ALL_CFLAGS) $(CXXFLAGS)
 
 .c.o:

automake/dpkg.m4

@@ -16,12 +16,12 @@ AC_DEFUN(DPKG_CACHED_TRY_COMPILE,[
  fi
 ])
 
-dnl DPKG_C_GCC_TRY_WARNS(<warnings>,<cachevar>)
+dnl DPKG_C_GCC_TRY_WARNS(<warnings>,<substvar>,<cachevar>)
 AC_DEFUN(DPKG_C_GCC_TRY_WARNS,[
  AC_MSG_CHECKING([GCC warning flag(s) $1])
  if test "${GCC-no}" = yes
  then
-  AC_CACHE_VAL($2,[
+  AC_CACHE_VAL($3,[
    oldcflags="${CFLAGS-}"
    CFLAGS="${CFLAGS-} ${CWARNS} $1 -Werror"
    AC_TRY_COMPILE([
@@ -29,16 +29,20 @@ AC_DEFUN(DPKG_C_GCC_TRY_WARNS,[
 #include <stdio.h>
 ],[
     strcmp("a","b"); fprintf(stdout,"test ok\n");
-], [$2=yes], [$2=no])
+], [$3=yes], [$3=no])
    CFLAGS="${oldcflags}"])
-  if test "x$$2" = xyes; then
+  if test "x$$3" = xyes; then
+   $2='$1'
    CWARNS="${CWARNS} $1"
    AC_MSG_RESULT(ok)
   else
+   $3=''
    $2=''
    AC_MSG_RESULT(no)
   fi
  else
+  $2=''
   AC_MSG_RESULT(no, not using GCC)
  fi
+ AC_SUBST($2)
 ])

configure.in

@@ -158,10 +158,10 @@ AC_TRY_COMPILE(,[
 } inline int foo (int x) {], AC_DEFINE(HAVE_INLINE))
 
 
-DPKG_C_GCC_TRY_WARNS(-Wall -Wno-implicit, dpkg_cv_c_gcc_warn_all)
-DPKG_C_GCC_TRY_WARNS(-Wwrite-strings, dpkg_cv_c_gcc_warn_writestrings)
-DPKG_C_GCC_TRY_WARNS(-Wpointer-arith, dpkg_cv_c_gcc_warn_pointerarith)
-DPKG_C_GCC_TRY_WARNS(-Wimplicit -Wnested-externs, dpkg_cv_c_gcc_warn_implicit)
+DPKG_C_GCC_TRY_WARNS(-Wall -Wno-implicit, WARN_ALL, dpkg_cv_c_gcc_warn_all)
+DPKG_C_GCC_TRY_WARNS(-Wwrite-strings, WARN_WRITESTRINGS, dpkg_cv_c_gcc_warn_writestrings)
+DPKG_C_GCC_TRY_WARNS(-Wpointer-arith, WARN_POINTERMATH, dpkg_cv_c_gcc_warn_pointerarith)
+DPKG_C_GCC_TRY_WARNS(-Wimplicit -Wnested-externs, WARN_IMPLICIT, dpkg_cv_c_gcc_warn_implicit)
 
 dnl Force this here so we can do the next step
 test "x$prefix" = xNONE && prefix="$ac_default_prefix"

debian/changelog

@@ -1,5 +1,7 @@
 dpkg (1.8.0) unstable; urgency=low
 
+  * Modified DPKG_C_GCC_TRY_WARNS() to call AC_SUBST, so that we can
+    use the result of the test during build time.  Closes: Bug#75138
   * Added description for "suggests" in main/depcon.c:describedepcon().
     Closes: Bug#74113
   * Removed bashing from dpkg.postinst.