diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 68 |
1 files changed, 54 insertions, 14 deletions
diff --git a/configure.ac b/configure.ac index 14249897ba02..8ed51262b391 100644 --- a/configure.ac +++ b/configure.ac @@ -1075,8 +1075,11 @@ AC_ARG_ENABLE(fuzzers, ) libo_FUZZ_ARG_ENABLE(pch, - AS_HELP_STRING([--enable-pch], - [Enables precompiled header support for C++. Forced default on Windows/VC build]) + AS_HELP_STRING([--enable-pch=<yes/no/system/base/normal/full>], + [Enables precompiled header support for C++. Forced default on Windows/VC build. + Using 'system' will include only external headers, 'basic' will add also headers + from base modules, 'normal' will also add all headers except from the module built, + 'full' will use all suitable headers even from a module itself.]) ) libo_FUZZ_ARG_ENABLE(epm, @@ -5028,24 +5031,61 @@ AC_SUBST(HYPH_SYSTEM_DIR) AC_SUBST(THES_SYSTEM_DIR) dnl =================================================================== -dnl enable pch by default on windows -dnl enable it explicitly otherwise +dnl Precompiled headers. ENABLE_PCH="" AC_MSG_CHECKING([whether to enable pch feature]) -if test "$enable_pch" != "no"; then +if test -z "$enable_pch"; then if test "$_os" = "WINNT"; then - ENABLE_PCH="TRUE" - AC_MSG_RESULT([yes]) - elif test -n "$enable_pch" && test "$GCC" = "yes"; then - ENABLE_PCH="TRUE" - AC_MSG_RESULT([yes]) - elif test -n "$enable_pch"; then - AC_MSG_ERROR([Precompiled header not yet supported for your platform/compiler]) + # Enabled by default on Windows. + enable_pch=yes + else + enable_pch=no + fi +fi +if test "$enable_pch" != "no" -a "$_os" != "WINNT" -a "$GCC" != "yes" ; then + AC_MSG_ERROR([Precompiled header not yet supported for your platform/compiler]) +fi +if test "$enable_pch" = "system"; then + ENABLE_PCH="1" + AC_MSG_RESULT([yes (system headers)]) +elif test "$enable_pch" = "base"; then + ENABLE_PCH="2" + AC_MSG_RESULT([yes (system and base headers)]) +elif test "$enable_pch" = "normal"; then + ENABLE_PCH="3" + AC_MSG_RESULT([yes (normal)]) +elif test "$enable_pch" = "full"; then + ENABLE_PCH="4" + AC_MSG_RESULT([yes (full)]) +elif test "$enable_pch" = "yes"; then + # Pick a suitable default. + if test "$GCC" = "yes"; then + # With Clang and GCC higher levels do not seem to make a noticeable improvement, + # while making the PCHs larger and rebuilds more likely. + ENABLE_PCH="2" + AC_MSG_RESULT([yes (system and base headers)]) else - AC_MSG_RESULT([no]) + # With MSVC the highest level makes a significant difference, + # and it was the default when there used to be no PCH levels. + ENABLE_PCH="4" + AC_MSG_RESULT([yes (full)]) fi -else +elif test "$enable_pch" = "no"; then AC_MSG_RESULT([no]) +else + AC_MSG_ERROR([Unknown value for --enable-pch]) +fi +if test -n "$ENABLE_PCH"; then + if test -n "$CCACHE"; then + if ! echo "$CCACHE_SLOPPINESS" | grep -q pch_defines | grep -q time_macros; then + AC_MSG_WARN([PCH with ccache requires CCACHE_SLOPPINESS to include 'pch_defines,time_macros']) + add_warning "PCH with ccache requires CCACHE_SLOPPINESS to include 'pch_defines,time_macros'" + fi + if test -z "$CCACHE_PCH_EXTSUM"; then + AC_MSG_WARN([It is recommended to set CCACHE_PCH_EXTSUM=1 for PCH with ccache.]) + add_warning "It is recommended to set CCACHE_PCH_EXTSUM=1 for PCH with ccache." + fi + fi fi AC_SUBST(ENABLE_PCH) |