commit f0993d3831b6132e342fb192820fc04902c98b38 Author: teor <teor@torproject.org> Date: Thu Oct 3 16:31:20 2019 +1000 configure: Give a more useful message when pkg-config fails When pkg-config is not installed, or a library that depends on pkg-config is not found, tell the user what to do to fix the problem. Fixes bug 31922; bugfix on 0.3.1.1-alpha. --- changes/bug31922 | 4 ++++ configure.ac | 19 +++++++++++++------ 2 files changed, 17 insertions(+), 6 deletions(-) diff --git a/changes/bug31922 b/changes/bug31922 new file mode 100644 index 000000000..e6f31ce66 --- /dev/null +++ b/changes/bug31922 @@ -0,0 +1,4 @@ + o Minor bugfixes (configuration): + - When pkg-config is not installed, or a library that depends on + pkg-config is not found, tell the user what to do to fix the + problem. Fixes bug 31922; bugfix on 0.3.1.1-alpha. diff --git a/configure.ac b/configure.ac index bd12e6167..dbcb51d47 100644 --- a/configure.ac +++ b/configure.ac @@ -29,6 +29,13 @@ AC_USE_SYSTEM_EXTENSIONS AC_CANONICAL_HOST PKG_PROG_PKG_CONFIG +if test "x$PKG_CONFIG" = "x" ; then + pkg_config_user_action="install pkg-config, and check the PKG_CONFIG_PATH environment variable." + AC_MSG_NOTICE([Some libraries need pkg-config, including systemd, nss, lzma, zstd, and custom mallocs.]) + AC_MSG_NOTICE([To use those libraries, $pkg_config_user_action]) +else + pkg_config_user_action="check the PKG_CONFIG_PATH environment variable." +fi AC_ARG_ENABLE(openbsd-malloc, AS_HELP_STRING(--enable-openbsd-malloc, [use malloc code from OpenBSD. Linux only. Deprecated: see --with-malloc])) @@ -166,7 +173,7 @@ AC_SUBST(TOR_SYSTEMD_CFLAGS) AC_SUBST(TOR_SYSTEMD_LIBS) if test "x$enable_systemd" = "xyes" -a "x$have_systemd" != "xyes" ; then - AC_MSG_ERROR([Explicitly requested systemd support, but systemd not found]) + AC_MSG_ERROR([Explicitly requested systemd support, but systemd not found, $pkg_config_user_action]) fi case "$host" in @@ -870,7 +877,7 @@ if test "x$enable_nss" = "xyes"; then PKG_CHECK_MODULES(NSS, [nss], [have_nss=yes], - [have_nss=no; AC_MSG_ERROR([You asked for NSS but I can't find it.])]) + [have_nss=no; AC_MSG_ERROR([You asked for NSS but I can't find it, $pkg_config_user_action])]) AC_SUBST(NSS_CFLAGS) AC_SUBST(NSS_LIBS) fi @@ -1076,7 +1083,7 @@ else have_lzma=no) if test "x$have_lzma" = "xno" ; then - AC_MSG_WARN([Unable to find liblzma.]) + AC_MSG_WARN([Unable to find liblzma, $pkg_config_user_action]) fi fi @@ -1108,7 +1115,7 @@ else have_zstd=no) if test "x$have_zstd" = "xno" ; then - AC_MSG_WARN([Unable to find libzstd.]) + AC_MSG_WARN([Unable to find libzstd, $pkg_config_user_action]) fi fi @@ -1915,7 +1922,7 @@ AS_CASE([$malloc], have_tcmalloc=no) if test "x$have_tcmalloc" = "xno" ; then - AC_MSG_ERROR([Unable to find tcmalloc requested by --with-malloc.]) + AC_MSG_ERROR([Unable to find tcmalloc requested by --with-malloc, $pkg_config_user_action]) fi CFLAGS="$CFLAGS $TCMALLOC_CFLAGS" @@ -1929,7 +1936,7 @@ AS_CASE([$malloc], have_jemalloc=no) if test "x$have_tcmalloc" = "xno" ; then - AC_MSG_ERROR([Unable to find jemalloc requested by --with-malloc.]) + AC_MSG_ERROR([Unable to find jemalloc requested by --with-malloc, $pkg_config_user_action]) fi CFLAGS="$CFLAGS $JEMALLOC_CFLAGS"