[PATCH 3 of 4] Configure: simplified PCRE compilation

[Maxim Dounin]

# HG changeset patch
# User Maxim Dounin <mdounin at mdounin.ru>
# Date 1639235686 -10800
#      Sat Dec 11 18:14:46 2021 +0300
# Node ID 84fae18c1b1e9d5cfafe10e0e9754f1d7ba628e1
# Parent  c03ed58d70b6bd37acf289621d514a7497c8815e
Configure: simplified PCRE compilation.

Removed ICC-specific PCRE optimizations which tried to link with PCRE
object files instead of the library.  Made compiler-specific code
minimal.

diff --git a/auto/lib/pcre/conf b/auto/lib/pcre/conf
--- a/auto/lib/pcre/conf
+++ b/auto/lib/pcre/conf
@@ -4,81 +4,24 @@
 
 
 if [ $PCRE != NONE ]; then
+
+    have=NGX_PCRE . auto/have
+
+    if [ "$NGX_PLATFORM" = win32 ]; then
+        have=PCRE_STATIC . auto/have
+    fi
+
     CORE_INCS="$CORE_INCS $PCRE"
+    CORE_DEPS="$CORE_DEPS $PCRE/pcre.h"
 
     case "$NGX_CC_NAME" in
 
         msvc | owc | bcc)
-            have=NGX_PCRE . auto/have
-            have=PCRE_STATIC . auto/have
-            CORE_DEPS="$CORE_DEPS $PCRE/pcre.h"
             LINK_DEPS="$LINK_DEPS $PCRE/pcre.lib"
             CORE_LIBS="$CORE_LIBS $PCRE/pcre.lib"
         ;;
 
-        icc)
-            have=NGX_PCRE . auto/have
-            CORE_DEPS="$CORE_DEPS $PCRE/pcre.h"
-
-            LINK_DEPS="$LINK_DEPS $PCRE/.libs/libpcre.a"
-
-            echo $ngx_n "checking for PCRE library ...$ngx_c"
-
-            if [ -f $PCRE/pcre.h ]; then
-                ngx_pcre_ver=`grep PCRE_MAJOR $PCRE/pcre.h \
-                              | sed -e 's/^.*PCRE_MAJOR.* \(.*\)$/\1/'`
-
-            else if [ -f $PCRE/configure.in ]; then
-                ngx_pcre_ver=`grep PCRE_MAJOR= $PCRE/configure.in \
-                              | sed -e 's/^.*=\(.*\)$/\1/'`
-
-            else
-                ngx_pcre_ver=`grep pcre_major, $PCRE/configure.ac \
-                              | sed -e 's/^.*pcre_major,.*\[\(.*\)\].*$/\1/'`
-            fi
-            fi
-
-            echo " $ngx_pcre_ver major version found"
-
-            # to allow -ipo optimization we link with the *.o but not library
-
-            case "$ngx_pcre_ver" in
-                4|5)
-                    CORE_LIBS="$CORE_LIBS $PCRE/pcre.o"
-                ;;
-
-                6)
-                    CORE_LIBS="$CORE_LIBS $PCRE/pcre_chartables.o"
-                    CORE_LIBS="$CORE_LIBS $PCRE/pcre_compile.o"
-                    CORE_LIBS="$CORE_LIBS $PCRE/pcre_exec.o"
-                    CORE_LIBS="$CORE_LIBS $PCRE/pcre_fullinfo.o"
-                    CORE_LIBS="$CORE_LIBS $PCRE/pcre_globals.o"
-                    CORE_LIBS="$CORE_LIBS $PCRE/pcre_tables.o"
-                    CORE_LIBS="$CORE_LIBS $PCRE/pcre_try_flipped.o"
-                ;;
-
-                *)
-                    CORE_LIBS="$CORE_LIBS $PCRE/pcre_chartables.o"
-                    CORE_LIBS="$CORE_LIBS $PCRE/pcre_compile.o"
-                    CORE_LIBS="$CORE_LIBS $PCRE/pcre_exec.o"
-                    CORE_LIBS="$CORE_LIBS $PCRE/pcre_fullinfo.o"
-                    CORE_LIBS="$CORE_LIBS $PCRE/pcre_globals.o"
-                    CORE_LIBS="$CORE_LIBS $PCRE/pcre_tables.o"
-                    CORE_LIBS="$CORE_LIBS $PCRE/pcre_try_flipped.o"
-                    CORE_LIBS="$CORE_LIBS $PCRE/pcre_newline.o"
-                ;;
-
-            esac
-        ;;
-
         *)
-            have=NGX_PCRE . auto/have
-
-            if [ "$NGX_PLATFORM" = win32 ]; then
-                have=PCRE_STATIC . auto/have
-            fi
-
-            CORE_DEPS="$CORE_DEPS $PCRE/pcre.h"
             LINK_DEPS="$LINK_DEPS $PCRE/.libs/libpcre.a"
             CORE_LIBS="$CORE_LIBS $PCRE/.libs/libpcre.a"
         ;;